diff --git a/.github/ubuntu/all-apt-prereqs.sh b/.github/ubuntu/all-apt-prereqs.sh
index 4c8435e15..181aa1525 100755
--- a/.github/ubuntu/all-apt-prereqs.sh
+++ b/.github/ubuntu/all-apt-prereqs.sh
@@ -1,3 +1,5 @@
+#!/bin/bash
+
 set -e
 
 sudo apt-get update -qq
@@ -8,5 +10,9 @@ sudo env DEBIAN_FRONTEND=noninteractive apt-get install -qq \
     default-jre \
     firebird-dev firebird3.0-utils \
     mysql-client default-libmysqlclient-dev \
-    libarchive-tools
+    libarchive-tools \
+    libaio1t64
 cat t/odbc/odbcinst.ini | sudo tee -a /etc/odbcinst.ini
+
+# instantclient still wants libaio.so.1. https://askubuntu.com/a/1514001
+sudo ln -s /usr/lib/x86_64-linux-gnu/libaio.so.1t64 /usr/lib/x86_64-linux-gnu/libaio.so.1
diff --git a/.github/ubuntu/exasol.sh b/.github/ubuntu/exasol.sh
index ed304b3cd..403721276 100755
--- a/.github/ubuntu/exasol.sh
+++ b/.github/ubuntu/exasol.sh
@@ -13,13 +13,12 @@ fi
 mkdir -p /opt/exasol
 
 # Download and unpack Exasol ODBC Driver & EXAplus.
-# https://www.exasol.com/portal/display/DOWNLOAD/
-curl -sSLO https://x-up.s3.amazonaws.com/7.x/7.1.17/EXASOL_ODBC-7.1.17.tar.gz
-curl -sSLO https://x-up.s3.amazonaws.com/7.x/7.1.17/EXAplus-7.1.17.tar.gz
-sudo tar -xzf EXASOL_ODBC-7.1.17.tar.gz -C /opt/exasol --strip-components 1
-sudo tar -xzf EXAplus-7.1.17.tar.gz     -C /opt/exasol --strip-components 1
+curl -sSLO https://x-up.s3.amazonaws.com/7.x/24.2.0/Exasol_ODBC-24.2.0-Linux_x86_64.tar.gz
+curl -sSLO https://x-up.s3.amazonaws.com/7.x/24.2.1/EXAplus-24.2.1.tar.gz
+sudo tar -xzf Exasol_ODBC-24.2.0-Linux_x86_64.tar.gz -C /opt/exasol --strip-components 2
+sudo tar -xzf EXAplus-24.2.1.tar.gz                  -C /opt/exasol --strip-components 2
 
 # Add to the path.
-if [[ ! -z "$GITHUB_PATH" ]]; then
-    echo "/opt/exasol" >> $GITHUB_PATH
+if [[ -n "$GITHUB_PATH" ]]; then
+    echo "/opt/exasol" >> "$GITHUB_PATH"
 fi
diff --git a/.github/ubuntu/firebird.sh b/.github/ubuntu/firebird.sh
index 90a968f2b..de1e7cd1d 100755
--- a/.github/ubuntu/firebird.sh
+++ b/.github/ubuntu/firebird.sh
@@ -9,6 +9,6 @@ if [ -z "$SKIP_DEPENDS" ]; then
 fi
 
 # Tell DBD::Firebird where to find the libraries.
-if [[ ! -z "$GITHUB_ENV" ]]; then
-    echo "FIREBIRD_HOME=/usr" >> $GITHUB_ENV
+if [[ -n "$GITHUB_ENV" ]]; then
+    echo "FIREBIRD_HOME=/usr" >> "$GITHUB_ENV"
 fi
diff --git a/.github/ubuntu/oracle.sh b/.github/ubuntu/oracle.sh
index 96d9dc37e..a258a06a6 100755
--- a/.github/ubuntu/oracle.sh
+++ b/.github/ubuntu/oracle.sh
@@ -2,13 +2,17 @@
 
 set -e
 
-version=21.9.0.0.0dbru
-icdr=219000
+version=23.6.0.24.10
+icdr=2360000
 
-# Install bsdtar, required to get --strip-components for a zip file.
+# Download dependencies.
 if [ -z "$SKIP_DEPENDS" ]; then
+    # Install libaio and bsdtar, required to get --strip-components for a zip file.
     sudo apt-get update -qq
-    sudo env DEBIAN_FRONTEND=noninteractive apt-get install -qq libarchive-tools
+    sudo env DEBIAN_FRONTEND=noninteractive apt-get install -qq libarchive-tools libaio1t64
+
+    # instantclient still wants libaio.so.1. https://askubuntu.com/a/1514001
+    sudo ln -s /usr/lib/x86_64-linux-gnu/libaio.so.1t64 /usr/lib/x86_64-linux-gnu/libaio.so.1
 fi
 
 # Download Instant Client.
@@ -24,15 +28,15 @@ bsdtar -C /opt/instantclient --strip-components 1 -zxf "instantclient-basic-linu
 bsdtar -C /opt/instantclient --strip-components 1 -zxf "instantclient-sqlplus-linux.x64-${version}.zip"
 bsdtar -C /opt/instantclient --strip-components 1 -zxf "instantclient-sdk-linux.x64-${version}.zip"
 
-if [[ ! -z "$GITHUB_PATH" ]]; then
-    echo "/opt/instantclient" >> $GITHUB_PATH
+if [[ -n "$GITHUB_PATH" ]]; then
+    echo "/opt/instantclient" >> "$GITHUB_PATH"
 fi
 
-if [[ ! -z "$GITHUB_ENV" ]]; then
-    echo "ORACLE_HOME=/opt/instantclient" >> $GITHUB_ENV
+if [[ -n "$GITHUB_ENV" ]]; then
+    echo "ORACLE_HOME=/opt/instantclient" >> "$GITHUB_ENV"
     if [[ -z "$LD_LIBRARY_PATH" ]]; then
-        echo "LD_LIBRARY_PATH=/opt/instantclient" >> $GITHUB_ENV
+        echo "LD_LIBRARY_PATH=/opt/instantclient" >> "$GITHUB_ENV"
     else
-        echo "LD_LIBRARY_PATH=/opt/instantclient:$LD_LIBRARY_PATH" >> $GITHUB_ENV
+        echo "LD_LIBRARY_PATH=/opt/instantclient:$LD_LIBRARY_PATH" >> "$GITHUB_ENV"
     fi
 fi
diff --git a/.github/ubuntu/pg.sh b/.github/ubuntu/pg.sh
index 8f35bd05c..0b9d2f314 100755
--- a/.github/ubuntu/pg.sh
+++ b/.github/ubuntu/pg.sh
@@ -9,6 +9,6 @@ curl -O https://salsa.debian.org/postgresql/postgresql-common/-/raw/master/pgdg/
 sudo sh apt.postgresql.org.sh -i -t -v $PGVERSION
 sudo pg_createcluster --start $PGVERSION test -p 5432 --locale=C -- -A trust -E UTF8
 
-if [[ ! -z "$GITHUB_PATH" ]]; then
-    echo "/usr/lib/postgresql/$POSTGRES/bin" >> $GITHUB_PATH
+if [[ -n "$GITHUB_PATH" ]]; then
+    echo "/usr/lib/postgresql/$POSTGRES/bin" >> "$GITHUB_PATH"
 fi
diff --git a/.github/ubuntu/snowflake.sh b/.github/ubuntu/snowflake.sh
index a56e9f3eb..ff10a3ce6 100755
--- a/.github/ubuntu/snowflake.sh
+++ b/.github/ubuntu/snowflake.sh
@@ -11,8 +11,8 @@ fi
 
 # https://docs.snowflake.net/manuals/release-notes/client-change-log-snowsql.html
 # https://sfc-repo.snowflakecomputing.com/index.html
-curl -sSLo snowsql.bash https://sfc-repo.snowflakecomputing.com/snowsql/bootstrap/1.2/linux_x86_64/snowsql-1.2.20-linux_x86_64.bash
-curl -sSLo snowdbc.tgz https://sfc-repo.snowflakecomputing.com/odbc/linux/2.24.2/snowflake_linux_x8664_odbc-2.24.2.tgz
+curl -sSLo snowsql.bash https://sfc-repo.snowflakecomputing.com/snowsql/bootstrap/1.2/linux_x86_64/snowsql-1.2.21-linux_x86_64.bash
+curl -sSLo snowdbc.tgz https://sfc-repo.snowflakecomputing.com/odbc/linux/latest/snowflake_linux_x8664_odbc-3.5.0.tgz
 
 # Install and configure ODBC.
 mkdir -p /opt/snowflake
@@ -22,14 +22,14 @@ sudo mv /opt/snowflake/ErrorMessages/en-US /opt/snowflake/lib/
 # Install, update, and configure SnowSQL.
 sed -e '1,/^exit$/d' snowsql.bash | sudo tar -C /opt/snowflake -zxf -
 /opt/snowflake/snowsql -Uv
-echo "[options]\nnoup = true" > /opt/snowflake/config
+printf "[options]\nnoup = true\n" > /opt/snowflake/config
 
 # Add to the path.
-if [[ ! -z "$GITHUB_PATH" ]]; then
-    echo "/opt/snowflake" >> $GITHUB_PATH
+if [[ -n "$GITHUB_PATH" ]]; then
+    echo "/opt/snowflake" >> "$GITHUB_PATH"
 fi
 
 # Tell SnowSQL where to find the config.
-if [[ ! -z "$GITHUB_ENV" ]]; then
-    echo "WORKSPACE=/opt/snowflake" >> $GITHUB_ENV
+if [[ -n "$GITHUB_ENV" ]]; then
+    echo "WORKSPACE=/opt/snowflake" >> "$GITHUB_ENV"
 fi
diff --git a/.github/ubuntu/sqlite.sh b/.github/ubuntu/sqlite.sh
index 7b547134e..74ca18209 100755
--- a/.github/ubuntu/sqlite.sh
+++ b/.github/ubuntu/sqlite.sh
@@ -6,13 +6,14 @@ SQLITE=${SQLITE:=${1:-3.40.1}}
 echo "Instaling SQLite $SQLITE"
 
 # Convert to the SQLITE_VERSION_NUMBER format https://sqlite.org/c3ref/c_source_id.html
-SQLITE=$(perl -e 'my @v = split /[.]/, shift; printf "%d%02d%02d%02d\n", @v[0..3]' $SQLITE)
+SQLITE=$(perl -e 'my @v = split /[.]/, shift; printf "%d%02d%02d%02d\n", @v[0..3]' "$SQLITE")
 
 # Since 3.7.16.1, the URL includes the year in the path.
 # 3.18.2, 3.18.1, 3.9.3, and 3.7.11 missing.
 # https://sqlite.org/chronology.html
 # https://stackoverflow.com/a/37712117/79202
-if   (( $SQLITE >= 3400200 )); then YEAR=2023
+if   (( $SQLITE >= 3450000 )); then YEAR=2024
+elif (( $SQLITE >= 3400200 )); then YEAR=2023
 elif (( $SQLITE >= 3370200 )); then YEAR=2022
 elif (( $SQLITE >= 3340100 )); then YEAR=2021
 elif (( $SQLITE >= 3310000 )); then YEAR=2020
@@ -41,20 +42,20 @@ gcc -shared -o libsqlite3.so -fPIC sqlite3.o -ldl -lpthread
 # Hand-build DBD::SQLite against the version of SQLite just installed.
 DIST=$(cpanm --info DBD::SQLite) # ISHIGAKI/DBD-SQLite-1.70.tar.gz
 URL=https://cpan.metacpan.org/authors/id/${DIST:0:1}/${DIST:0:2}/$DIST
-curl -o dbd.tar.gz $URL
+curl -o dbd.tar.gz "$URL"
 tar zxvf dbd.tar.gz --strip-components 1
 perl -i -pe 's/^if\s*\(\s*0\s*\)\s\{/if (1) {/' Makefile.PL
 perl Makefile.PL SQLITE_INC=/opt/sqlite SQLITE_LIB=/opt/sqlite
 make && make install
 
-if [[ ! -z "$GITHUB_PATH" ]]; then
-    echo "/opt/sqlite" >> $GITHUB_PATH
+if [[ -n "$GITHUB_PATH" ]]; then
+    echo "/opt/sqlite" >> "$GITHUB_PATH"
 fi
 
-if [[ ! -z "$GITHUB_ENV" ]]; then
+if [[ -n "$GITHUB_ENV" ]]; then
     if [[ -z "$LD_LIBRARY_PATH" ]]; then
-        echo "LD_LIBRARY_PATH=/opt/sqlite" >> $GITHUB_ENV
+        echo "LD_LIBRARY_PATH=/opt/sqlite" >> "$GITHUB_ENV"
     else
-        echo "LD_LIBRARY_PATH=/opt/sqlite:$LD_LIBRARY_PATH" >> $GITHUB_ENV
+        echo "LD_LIBRARY_PATH=/opt/sqlite:$LD_LIBRARY_PATH" >> "$GITHUB_ENV"
     fi
 fi
diff --git a/.github/ubuntu/vertica.sh b/.github/ubuntu/vertica.sh
index caafa3803..fea50d54b 100755
--- a/.github/ubuntu/vertica.sh
+++ b/.github/ubuntu/vertica.sh
@@ -11,9 +11,9 @@ fi
 cat t/odbc/vertica.ini | sudo tee -a /etc/vertica.ini
 
 # https://www.vertica.com/download/vertica/client-drivers/
-curl -sSLO https://www.vertica.com/client_drivers/12.0.x/12.0.3-0/vertica-client-12.0.3-0.x86_64.tar.gz
-sudo tar -xzf vertica-client-12.0.3-0.x86_64.tar.gz -C /
+curl -sSLO https://www.vertica.com/client_drivers/24.2.x/24.2.0-1/vertica-client-24.2.0-1.x86_64.tar.gz
+sudo tar -xzf vertica-client-24.2.0-1.x86_64.tar.gz -C /
 
-if [[ ! -z "$GITHUB_PATH" ]]; then
-    echo "/opt/vertica/bin" >> $GITHUB_PATH
+if [[ -n "$GITHUB_PATH" ]]; then
+    echo "/opt/vertica/bin" >> "$GITHUB_PATH"
 fi
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 042cc800c..d0cc7a27f 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -18,10 +18,10 @@ jobs:
         ports: [ 8563 ]
         options: --privileged
       firebird:
-        image: jacobalberty/firebird:latest
+        image: ghcr.io/fdcastel/firebird:latest
         ports: [ 3050 ]
         env:
-          ISC_PASSWORD: nix
+          FIREBIRD_ROOT_PASSWORD: nix
           FIREBIRD_DATABASE: sqitchtest.db
       mysql:
         image: mysql:latest
@@ -44,9 +44,9 @@ jobs:
         image: vertica/vertica-ce:latest
         ports: [ 5433 ]
     steps:
-      # https://github.com/orgs/community/discussions/25678#discussioncomment-5242449
+      # https://github.com/orgs/community/discussions/25678#discussioncomment-9017167
       - name: Free Disk Space
-        run: rm -rf /opt/hostedtoolcache
+        run: find /opt -maxdepth 1 -mindepth 1 '!' -path ./containerd '!' -path ./actionarchivecache '!' -path ./runner '!' -path ./runner-cache -exec rm -rf '{}' ';'
       - name: Start CockroachDB
         run: docker run -d -p 26257:26257 cockroachdb/cockroach:latest start-single-node --insecure
       - uses: actions/checkout@v4
@@ -81,9 +81,9 @@ jobs:
           PERL5LIB: "${{ github.workspace }}/local/lib/perl5"
           HARNESS_PERL_SWITCHES: -MDevel::Cover=-ignore,^(?:x?t|inc|bin|local)/
           LIVE_EXASOL_REQUIRED: true
-          SQITCH_TEST_EXASOL_URI: db:exasol://sys:exasol@127.0.0.1:${{ job.services.exasol.ports[8563] }}/?Driver=Exasol;SSLCertificate=SSL_VERIFY_NONE
+          SQITCH_TEST_EXASOL_URI: db:exasol://sys:exasol@127.0.0.1:${{ job.services.exasol.ports[8563] }}/?Driver=Exasol;SSLCERTIFICATE=SSL_VERIFY_NONE
           LIVE_FIREBIRD_REQUIRED: true
-          SQITCH_TEST_FIREBIRD_URI: db:firebird://sysdba:nix@127.0.0.1:${{ job.services.firebird.ports[3050] }}//firebird/data/sqitchtest.db
+          SQITCH_TEST_FIREBIRD_URI: db:firebird://sysdba:nix@127.0.0.1:${{ job.services.firebird.ports[3050] }}//var/lib/firebird/data/sqitchtest.db
           LIVE_MYSQL_REQUIRED: true
           SQITCH_TEST_MYSQL_URI: "db:mysql://root@127.0.0.1:${{ job.services.mysql.ports[3306] }}/information_schema"
           LIVE_ORACLE_REQUIRED: true
diff --git a/.github/workflows/exasol.yml b/.github/workflows/exasol.yml
index b372107b4..b608ac8cf 100644
--- a/.github/workflows/exasol.yml
+++ b/.github/workflows/exasol.yml
@@ -11,7 +11,7 @@ jobs:
   Exasol:
     strategy:
       matrix:
-        exasol: ['7.1', '7.0']
+        exasol: ['8', '7.1', '7.0']
     name: ☀️ Exasol ${{ matrix.exasol }}
     runs-on: ubuntu-latest
     services:
@@ -38,5 +38,5 @@ jobs:
         env:
           PERL5LIB: "${{ github.workspace }}/local/lib/perl5"
           LIVE_EXASOL_REQUIRED: true
-          SQITCH_TEST_EXASOL_URI: db:exasol://sys:exasol@127.0.0.1:${{ job.services.exasol.ports[8563] }}/?Driver=Exasol;SSLCertificate=SSL_VERIFY_NONE
+          SQITCH_TEST_EXASOL_URI: db:exasol://sys:exasol@127.0.0.1:${{ job.services.exasol.ports[8563] }}/?Driver=Exasol;SSLCERTIFICATE=SSL_VERIFY_NONE
         run: prove -lvr t/exasol.t
diff --git a/.github/workflows/firebird.yml b/.github/workflows/firebird.yml
index 2ba7dd920..427cdf33b 100644
--- a/.github/workflows/firebird.yml
+++ b/.github/workflows/firebird.yml
@@ -12,10 +12,11 @@ jobs:
     strategy:
       matrix:
         include:
-          - { version: '4.0'    }
-          - { version: '3.0'    }
-          - { version: '2.5-ss' }
-          - { version: '2.5-sc' }
+          - { version: '5',      image: ghcr.io/fdcastel/firebird, dir: /var/lib/firebird/data }
+          - { version: '4',      image: ghcr.io/fdcastel/firebird, dir: /var/lib/firebird/data }
+          - { version: '3',      image: ghcr.io/fdcastel/firebird, dir: /var/lib/firebird/data }
+          - { version: '2.5-ss', image: jacobalberty/firebird,     dir: /firebird/data         } # deprecated
+          - { version: '2.5-sc', image: jacobalberty/firebird,     dir: /firebird/data         } # deprecated
     name: 🔥 Firebird ${{ matrix.version }}
     runs-on: ubuntu-latest
     services:
@@ -23,10 +24,11 @@ jobs:
       # CLI and libraries DBD::firebird use are static to the version on the runner
       # machine.
       firebird:
-        image: jacobalberty/firebird:${{ matrix.version }}
+        image: ${{ matrix.image }}:${{ matrix.version }}
         ports: [ 3050 ]
         env:
-          ISC_PASSWORD: nix
+          ISC_PASSWORD: nix # for jacobalberty/firebird only
+          FIREBIRD_ROOT_PASSWORD: nix
           FIREBIRD_DATABASE: sqitchtest.db
     steps:
       - uses: actions/checkout@v4
@@ -47,5 +49,5 @@ jobs:
         env:
           PERL5LIB: "${{ github.workspace }}/local/lib/perl5"
           LIVE_FIREBIRD_REQUIRED: true
-          SQITCH_TEST_FIREBIRD_URI: db:firebird://sysdba:nix@127.0.0.1:${{ job.services.firebird.ports[3050] }}//firebird/data/sqitchtest.db
+          SQITCH_TEST_FIREBIRD_URI: db:firebird://sysdba:nix@127.0.0.1:${{ job.services.firebird.ports[3050] }}/${{ matrix.dir }}/sqitchtest.db
         run: prove -lvr t/firebird.t
diff --git a/.github/workflows/mysql.yml b/.github/workflows/mysql.yml
index 4510babf7..f8e42c130 100644
--- a/.github/workflows/mysql.yml
+++ b/.github/workflows/mysql.yml
@@ -12,21 +12,32 @@ jobs:
     strategy:
       matrix:
         include:
-          # curl https://registry.hub.docker.com/v2/repositories/library/mysql/tags\?page_size\=10000 | jq '.results[].name
-          - { version: '8.0',  icon: 🐬, name: MySQL,   image: mysql   }
-          - { version: '5.7',  icon: 🐬, name: MySQL,   image: mysql   }
-          - { version: '5.6',  icon: 🐬, name: MySQL,   image: mysql   }
-          - { version: '5.5',  icon: 🐬, name: MySQL,   image: mysql   }
-          # https://registry.hub.docker.com/v2/repositories/library/mariadb/tags\?page_size\=10000 | jq '.results[].name'
-          - { version: '11.0', icon: 🦭, name: MariaDB, image: mariadb }
-          - { version: '10.9', icon: 🦭, name: MariaDB, image: mariadb }
-          - { version: '10.6', icon: 🦭, name: MariaDB, image: mariadb }
-          - { version: '10.5', icon: 🦭, name: MariaDB, image: mariadb }
-          - { version: '10.4', icon: 🦭, name: MariaDB, image: mariadb }
-          - { version: '10.3', icon: 🦭, name: MariaDB, image: mariadb }
-          - { version: '10.2', icon: 🦭, name: MariaDB, image: mariadb }
-          - { version: '10.1', icon: 🦭, name: MariaDB, image: mariadb }
-          - { version: '10.0', icon: 🦭, name: MariaDB, image: mariadb }
+          # curl -s https://registry.hub.docker.com/v2/repositories/library/mysql/tags\?page_size\=10000 | jq '.results[].name'
+          - { version: '9.1',   icon: 🐬, name: MySQL,   image: mysql   }
+          - { version: '8.4',   icon: 🐬, name: MySQL,   image: mysql   }
+          - { version: '5.7',   icon: 🐬, name: MySQL,   image: mysql   }
+          - { version: '5.6',   icon: 🐬, name: MySQL,   image: mysql   }
+          - { version: '5.5',   icon: 🐬, name: MySQL,   image: mysql   }
+          # curl -s https://registry.hub.docker.com/v2/repositories/library/mariadb/tags\?page_size\=10000 | jq '.results[].name'
+          - { version: '11.6',  icon: 🦭, name: MariaDB, image: mariadb }
+          - { version: '11.5',  icon: 🦭, name: MariaDB, image: mariadb }
+          - { version: '11.4',  icon: 🦭, name: MariaDB, image: mariadb }
+          - { version: '11.3',  icon: 🦭, name: MariaDB, image: mariadb }
+          - { version: '11.2',  icon: 🦭, name: MariaDB, image: mariadb }
+          - { version: '11.1',  icon: 🦭, name: MariaDB, image: mariadb }
+          - { version: '11.0',  icon: 🦭, name: MariaDB, image: mariadb }
+          - { version: '10.11', icon: 🦭, name: MariaDB, image: mariadb }
+          - { version: '10.10', icon: 🦭, name: MariaDB, image: mariadb }
+          - { version: '10.9',  icon: 🦭, name: MariaDB, image: mariadb }
+          - { version: '10.8',  icon: 🦭, name: MariaDB, image: mariadb }
+          - { version: '10.7',  icon: 🦭, name: MariaDB, image: mariadb }
+          - { version: '10.6',  icon: 🦭, name: MariaDB, image: mariadb }
+          - { version: '10.5',  icon: 🦭, name: MariaDB, image: mariadb }
+          - { version: '10.4',  icon: 🦭, name: MariaDB, image: mariadb }
+          - { version: '10.3',  icon: 🦭, name: MariaDB, image: mariadb }
+          - { version: '10.2',  icon: 🦭, name: MariaDB, image: mariadb }
+          - { version: '10.1',  icon: 🦭, name: MariaDB, image: mariadb }
+          - { version: '10.0',  icon: 🦭, name: MariaDB, image: mariadb }
     name: ${{ matrix.icon }} ${{ matrix.name }} ${{ matrix.version }}
     runs-on: ubuntu-latest
     services:
diff --git a/.github/workflows/oracle.yml b/.github/workflows/oracle.yml
index 9fbff57e9..6d9e249f6 100644
--- a/.github/workflows/oracle.yml
+++ b/.github/workflows/oracle.yml
@@ -20,8 +20,8 @@ jobs:
           # * Image Source:      https://github.com/gvenzl/oci-oracle-xe/
           # * Image Issue:       https://github.com/gvenzl/oci-oracle-xe/issues/46
           # * DBD::Oracle Issue: https://github.com/perl5-dbi/DBD-Oracle/issues/131
-          # https://registry.hub.docker.com/v2/repositories/gvenzl/oracle-xe/tags\?page_size\=10000 | jq '.results[].name
-          - { version: 21c, tag: 21,      service: XE, altUser: dbsnmp    }
+          # https://registry.hub.docker.com/v2/repositories/gvenzl/oracle-xe/tags\?page_size\=10000 | jq '.results[].name'
+          - { version: 21c, tag: 21-slim, service: XE, altUser: dbsnmp    }
           - { version: 18c, tag: 18-slim, service: XE, altUser: gsmuser    }
           - { version: 11g, tag: 11-slim, service: XE, altuser: sqitchtest }
     name: "🔮 Oracle ${{ matrix.version }}"
diff --git a/.github/workflows/perl.yml b/.github/workflows/perl.yml
index ee95e0c54..e4f56d77e 100644
--- a/.github/workflows/perl.yml
+++ b/.github/workflows/perl.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         os: [[🐧, ubuntu], [🍎, macos], [🪟, windows]]
-        perl: [ '5.38', '5.36', '5.34', '5.32', '5.30', '5.28', '5.26', '5.24', '5.22', '5.20', '5.18', '5.16', '5.14', '5.12' ]
+        perl: [ '5.40', '5.38', '5.36', '5.34', '5.32', '5.30', '5.28', '5.26', '5.24', '5.22', '5.20', '5.18', '5.16', '5.14', '5.12' ]
         exclude:
           - { os: [🪟, windows], perl: '5.12' } # https://github.com/shogo82148/actions-setup-perl/issues/876
           - { os: [🪟, windows], perl: '5.14' } # https://github.com/shogo82148/actions-setup-perl/issues/881
diff --git a/.github/workflows/pg.yml b/.github/workflows/pg.yml
index b727a78be..facfa35e3 100644
--- a/.github/workflows/pg.yml
+++ b/.github/workflows/pg.yml
@@ -11,7 +11,7 @@ jobs:
   Postgres:
     strategy:
       matrix:
-        pg: [16, 15, 14, 13, 12, 11, 10, 9.6, 9.5, 9.4, 9.3, 9.2, 9.1, '9.0', 8.4]
+        pg: [17, 16, 15, 14, 13, 12, 11, 10, 9.6, 9.5, 9.4, 9.3, 9.2, 9.1, '9.0', 8.4]
     name: 🐘 Postgres ${{ matrix.pg }}
     runs-on: ubuntu-latest
     steps:
diff --git a/.github/workflows/sqlite.yml b/.github/workflows/sqlite.yml
index 161a660aa..02a15ddf5 100644
--- a/.github/workflows/sqlite.yml
+++ b/.github/workflows/sqlite.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         # https://sqlite.org/chronology.html
-        sqlite: [3.42.0, 3.41.2, 3.40.1, 3.39.4, 3.38.5, 3.37.2, 3.36.0, 3.35.5, 3.34.1, 3.33.0, 3.32.3, 3.31.1, 3.30.1, 3.29.0, 3.28.0, 3.27.2, 3.26.0, 3.25.3, 3.24.0, 3.23.1, 3.22.0, 3.21.0, 3.20.1, 3.19.3, 3.18.0, 3.17.0, 3.16.2, 3.15.2, 3.14.2, 3.13.0, 3.12.2, 3.11.1, 3.10.2, 3.9.2, 3.8.11.1, 3.8.6]
+        sqlite: [3.47.2, 3.46.1, 3.45.3, 3.44.2, 3.43.2, 3.42.0, 3.41.2, 3.40.1, 3.39.4, 3.38.5, 3.37.2, 3.36.0, 3.35.5, 3.34.1, 3.33.0, 3.32.3, 3.31.1, 3.30.1, 3.29.0, 3.28.0, 3.27.2, 3.26.0, 3.25.3, 3.24.0, 3.23.1, 3.22.0, 3.21.0, 3.20.1, 3.19.3, 3.18.0, 3.17.0, 3.16.2, 3.15.2, 3.14.2, 3.13.0, 3.12.2, 3.11.1, 3.10.2, 3.9.2, 3.8.11.1, 3.8.6]
     name: 💡 SQLite ${{ matrix.sqlite }}
     runs-on: ubuntu-latest
     steps:
diff --git a/.github/workflows/vertica.yml b/.github/workflows/vertica.yml
index 1eab0d85e..f8195171a 100644
--- a/.github/workflows/vertica.yml
+++ b/.github/workflows/vertica.yml
@@ -12,6 +12,8 @@ jobs:
     strategy:
       matrix:
         include:
+         - { label: '24.1', version: 24.1.0-0, image: vertica/vertica-ce,     db: VMart }
+         - { label: '23.4', version: 23.4.0-0, image: vertica/vertica-ce,     db: VMart }
          - { label: '12.0', version: 12.0.4-0, image: vertica/vertica-ce,     db: VMart }
          - { label: '11.0', version: 11.1.1-0, image: vertica/vertica-ce,     db: VMart }
          - { label: '10.1', version: 10.1.1-0, image: vertica/vertica-ce,     db: VMart }
diff --git a/.github/workflows/yugabyte.yml b/.github/workflows/yugabyte.yml
index 203a56db9..5a068cf31 100644
--- a/.github/workflows/yugabyte.yml
+++ b/.github/workflows/yugabyte.yml
@@ -13,17 +13,22 @@ jobs:
       matrix:
         include:
           # curl https://registry.hub.docker.com/v2/repositories/yugabytedb/yugabyte/tags\?page_size\=10000 | jq '.results[].name' | sort
-          - { version: '2.19', tag: 2.19.0.0-b190 }
-          - { version: '2.18', tag: 2.18.1.0-b84  }
-          - { version: '2.17', tag: 2.17.3.0-b152 }
-          - { version: '2.16', tag: 2.16.6.0-b43  }
-          - { version: '2.15', tag: 2.15.3.2-b1   }
-          - { version: '2.14', tag: 2.14.11.0-b35 }
-          - { version: '2.13', tag: 2.13.2.0-b135 }
-          - { version: '2.12', tag: 2.12.12.0-b12 }
-          - { version: '2.11', tag: 2.11.2.0-b89  }
-          - { version: '2.8',  tag: 2.8.12.0-b5   }
-          - { version: '2.6',  tag: 2.6.20.0-b10  }
+          - { version: '2024.2', tag: 2024.2.0.0-b145 }
+          - { version: '2024.1', tag: 2024.1.3.1-b8   }
+          - { version: '2.23',   tag: 2.23.1.0-b220   }
+          - { version: '2.21',   tag: 2.21.1.0-b271   }
+          - { version: '2.20',   tag: 2.20.8.1-b2     }
+          - { version: '2.19',   tag: 2.19.0.0-b190   }
+          - { version: '2.18',   tag: 2.18.9.0-b17    }
+          - { version: '2.17',   tag: 2.17.3.0-b152   }
+          - { version: '2.16',   tag: 2.16.9.0-b67    }
+          - { version: '2.15',   tag: 2.15.3.2-b1     }
+          - { version: '2.14',   tag: 2.14.17.0-b6    }
+          - { version: '2.13',   tag: 2.13.2.0-b135   }
+          - { version: '2.12',   tag: 2.12.12.0-b12   }
+          - { version: '2.11',   tag: 2.11.2.0-b89    }
+          - { version: '2.8',    tag: 2.8.12.0-b5     }
+          - { version: '2.6',    tag: 2.6.20.0-b10    }
     name: 💫 Yugabyte ${{ matrix.version }}
     runs-on: ubuntu-latest
     steps:
diff --git a/Changes b/Changes
index 74b08cc5c..94449a844 100644
--- a/Changes
+++ b/Changes
@@ -6,6 +6,10 @@ Revision history for Perl extension App::Sqitch
      - Banned "[" and "]" in names (changes, tags, projects) because they
        muck with dependency parsing of the plan file. Thanks to Žiga Leber for
        the bug report (#829).
+     - Updated the IPC methods that interact with engine clients to raise
+       exception objects rather than strings, for more consistent error
+       handling throughout.
+     - Removed duplicate DBI error handling code from engines and tests.
 
 1.4.1  2024-02-04T16:35:32Z
      - Removed the quoting of the role and warehouse identifiers that was
diff --git a/README.md b/README.md
index db6640df3..18a0772be 100644
--- a/README.md
+++ b/README.md
@@ -163,15 +163,15 @@ SOFTWARE.
   [OSes]:      https://github.com/sqitchers/sqitch/actions/workflows/os.yml/badge.svg
   [💿]:        https://github.com/sqitchers/sqitch/actions/workflows/os.yml "Tested on Linux, macOS, and Windows"
   [Exasol]:    https://github.com/sqitchers/sqitch/actions/workflows/exasol.yml/badge.svg
-  [☀️]:         https://github.com/sqitchers/sqitch/actions/workflows/exasol.yml "Tested with Exasol 7.0–7.1"
+  [☀️]:         https://github.com/sqitchers/sqitch/actions/workflows/exasol.yml "Tested with Exasol 7.0–8.32"
   [Oracle]:    https://github.com/sqitchers/sqitch/actions/workflows/oracle.yml/badge.svg
   [🔮]:        https://github.com/sqitchers/sqitch/actions/workflows/oracle.yml "Tested with Oracle 11, 18, and 21"
   [Docker]:    https://img.shields.io/docker/v/sqitch/sqitch?label=%F0%9F%90%B3%20Docker&sort=semver
   [🐳]:        https://hub.docker.com/r/sqitch/sqitch "Latest version on Docker Hub"
   [Perl]:      https://github.com/sqitchers/sqitch/actions/workflows/perl.yml/badge.svg
-  [🧅]:        https://github.com/sqitchers/sqitch/actions/workflows/perl.yml "Tested with Perl 5.12–5.38"
+  [🧅]:        https://github.com/sqitchers/sqitch/actions/workflows/perl.yml "Tested with Perl 5.12–5.40"
   [Firebird]:  https://github.com/sqitchers/sqitch/actions/workflows/firebird.yml/badge.svg
-  [🔥]:        https://github.com/sqitchers/sqitch/actions/workflows/firebird.yml "Tested with Firebird 2.5, 3, and 4"
+  [🔥]:        https://github.com/sqitchers/sqitch/actions/workflows/firebird.yml "Tested with Firebird 2.5–5.0"
   [Snowflake]: https://github.com/sqitchers/sqitch/actions/workflows/snowflake.yml/badge.svg
   [❄️]:         https://github.com/sqitchers/sqitch/actions/workflows/snowflake.yml "Tested with Snowflake"
   [Homebrew]:  https://img.shields.io/github/v/tag/sqitchers/homebrew-sqitch?label=%F0%9F%8D%BA%20Homebrew&sort=semver
@@ -179,15 +179,15 @@ SOFTWARE.
   [Coverage]:  https://img.shields.io/coveralls/github/sqitchers/sqitch?label=%F0%9F%93%88%20Coverage
   [📈]:        https://coveralls.io/r/sqitchers/sqitch "Test Coverage"
   [MySQL]:     https://github.com/sqitchers/sqitch/actions/workflows/mysql.yml/badge.svg
-  [🐬]:        https://github.com/sqitchers/sqitch/actions/workflows/mysql.yml "Tested with MySQL 5.5–8 and MariaDB 10.0–11.0"
+  [🐬]:        https://github.com/sqitchers/sqitch/actions/workflows/mysql.yml "Tested with MySQL 5.5–9.1 and MariaDB 10.0–11.6"
   [SQLite]:    https://github.com/sqitchers/sqitch/actions/workflows/sqlite.yml/badge.svg
-  [💡]:        https://github.com/sqitchers/sqitch/actions/workflows/sqlite.yml "Tested with SQLite 3.8–3.42"
+  [💡]:        https://github.com/sqitchers/sqitch/actions/workflows/sqlite.yml "Tested with SQLite 3.8–3.47"
   [Debian]:    https://img.shields.io/debian/v/sqitch?label=%F0%9F%8D%A5%20Debian
   [🍥]:        https://packages.debian.org/stable/sqitch "Latest version on Debian"
   [Postgres]:  https://github.com/sqitchers/sqitch/actions/workflows/pg.yml/badge.svg
-  [🐘]:        https://github.com/sqitchers/sqitch/actions/workflows/pg.yml "Tested with PostgreSQL 8.4–16"
+  [🐘]:        https://github.com/sqitchers/sqitch/actions/workflows/pg.yml "Tested with PostgreSQL 8.4–17"
   [Yugabyte]:  https://github.com/sqitchers/sqitch/actions/workflows/yugabyte.yml/badge.svg
-  [💫]:        https://github.com/sqitchers/sqitch/actions/workflows/yugabyte.yml "Tested with YugabyteDB 2.6–2.19"
+  [💫]:        https://github.com/sqitchers/sqitch/actions/workflows/yugabyte.yml "Tested with YugabyteDB 2.6–2024.2"
   [Vertica]:   https://github.com/sqitchers/sqitch/actions/workflows/vertica.yml/badge.svg
   [🔺]:        https://github.com/sqitchers/sqitch/actions/workflows/vertica.yml "Tested with Vertica 7.2–12.0"
 [Cockroach]: https://github.com/sqitchers/sqitch/actions/workflows/cockroach.yml/badge.svg
diff --git a/lib/App/Sqitch.pm b/lib/App/Sqitch.pm
index 95c977469..b8813fd3c 100644
--- a/lib/App/Sqitch.pm
+++ b/lib/App/Sqitch.pm
@@ -329,7 +329,7 @@ sub run {
     my $self = shift;
     local $SIG{__DIE__} = sub {
         ( my $msg = shift ) =~ s/\s+at\s+.+/\n/ms;
-        die $msg;
+        hurl ipc => $msg;
     };
     if (ISWIN && IPC::System::Simple->VERSION < 1.28) {
         runx ( shift, $self->quote_shell(@_) );
@@ -343,7 +343,7 @@ sub shell {
     my ($self, $cmd) = @_;
     local $SIG{__DIE__} = sub {
         ( my $msg = shift ) =~ s/\s+at\s+.+/\n/ms;
-        die $msg;
+        hurl ipc => $msg;
     };
     IPC::System::Simple::run $cmd;
     return $self;
@@ -363,7 +363,7 @@ sub capture {
     my $self = shift;
     local $SIG{__DIE__} = sub {
         ( my $msg = shift ) =~ s/\s+at\s+.+/\n/ms;
-        die $msg;
+        hurl ipc => $msg;
     };
     return capturex ( shift, $self->quote_shell(@_) )
         if ISWIN && IPC::System::Simple->VERSION <= 1.25;
diff --git a/lib/App/Sqitch/Engine.pm b/lib/App/Sqitch/Engine.pm
index f6979ad49..32ba15a1a 100644
--- a/lib/App/Sqitch/Engine.pm
+++ b/lib/App/Sqitch/Engine.pm
@@ -1764,7 +1764,6 @@ L<MySQL engine|App::Sqitch::Engine::mysql> engine sets them via the C<SET>
 command and the L<Oracle engine|App::Sqitch::Engine::oracle> engine sets them
 via the SQL*Plus C<DEFINE> command.
 
-
 =head3 C<deploy>
 
   $engine->deploy($to_change);
diff --git a/lib/App/Sqitch/Engine/exasol.pm b/lib/App/Sqitch/Engine/exasol.pm
index d8c14eabb..cb433bf45 100644
--- a/lib/App/Sqitch/Engine/exasol.pm
+++ b/lib/App/Sqitch/Engine/exasol.pm
@@ -131,12 +131,7 @@ has dbh => (
             AutoCommit        => 1,
             odbc_utf8_on      => 1,
             FetchHashKeyName  => 'NAME_lc',
-            HandleError       => sub {
-                my ($err, $dbh) = @_;
-                $@ = $err;
-                @_ = ($dbh->state || 'DEV' => $dbh->errstr);
-                goto &hurl;
-            },
+            HandleError       => $self->_error_handler,
             Callbacks         => {
                 connected => sub {
                     my $dbh = shift;
diff --git a/lib/App/Sqitch/Engine/firebird.pm b/lib/App/Sqitch/Engine/firebird.pm
index b0ec6bd9c..4841e16d6 100644
--- a/lib/App/Sqitch/Engine/firebird.pm
+++ b/lib/App/Sqitch/Engine/firebird.pm
@@ -79,12 +79,7 @@ has dbh => (
             AutoCommit       => 1,
             ib_enable_utf8   => 1,
             FetchHashKeyName => 'NAME_lc',
-            HandleError      => sub {
-                my ($err, $dbh) = @_;
-                $@ = $err;
-                @_ = ($dbh->state || 'DEV' => $dbh->errstr);
-                goto &hurl;
-            },
+            HandleError       => $self->_error_handler,
         });
     }
 );
diff --git a/lib/App/Sqitch/Engine/mysql.pm b/lib/App/Sqitch/Engine/mysql.pm
index 50167326e..8b2f15899 100644
--- a/lib/App/Sqitch/Engine/mysql.pm
+++ b/lib/App/Sqitch/Engine/mysql.pm
@@ -79,12 +79,7 @@ has dbh => (
             mysql_enable_utf8    => 1,
             mysql_auto_reconnect => 0,
             mysql_use_result     => 0, # Prevent "Commands out of sync" error.
-            HandleError          => sub {
-                my ($err, $dbh) = @_;
-                $@ = $err;
-                @_ = ($dbh->state || 'DEV' => $dbh->errstr);
-                goto &hurl;
-            },
+            HandleError       => $self->_error_handler,
             Callbacks             => {
                 connected => sub {
                     my $dbh = shift;
diff --git a/lib/App/Sqitch/Engine/oracle.pm b/lib/App/Sqitch/Engine/oracle.pm
index 5cd82b8e5..8cd4af7ee 100644
--- a/lib/App/Sqitch/Engine/oracle.pm
+++ b/lib/App/Sqitch/Engine/oracle.pm
@@ -102,12 +102,7 @@ has dbh => (
             RaiseError        => 0,
             AutoCommit        => 1,
             FetchHashKeyName  => 'NAME_lc',
-            HandleError       => sub {
-                my ($err, $dbh) = @_;
-                $@ = $err;
-                @_ = ($dbh->state || 'DEV' => $dbh->errstr);
-                goto &hurl;
-            },
+            HandleError       => $self->_error_handler,
             Callbacks         => {
                 connected => sub {
                     my $dbh = shift;
diff --git a/lib/App/Sqitch/Engine/pg.pm b/lib/App/Sqitch/Engine/pg.pm
index 1317b83a7..62f4b1004 100644
--- a/lib/App/Sqitch/Engine/pg.pm
+++ b/lib/App/Sqitch/Engine/pg.pm
@@ -127,12 +127,7 @@ has dbh => (
             AutoCommit        => 1,
             pg_enable_utf8    => 1,
             pg_server_prepare => 1,
-            HandleError       => sub {
-                my ($err, $dbh) = @_;
-                $@ = $err;
-                @_ = ($dbh->state || 'DEV' => $dbh->errstr);
-                goto &hurl;
-            },
+            HandleError       => $self->_error_handler,
             Callbacks         => {
                 connected => sub {
                     my $dbh = shift;
diff --git a/lib/App/Sqitch/Engine/snowflake.pm b/lib/App/Sqitch/Engine/snowflake.pm
index ee8151ffc..8d476fcb2 100644
--- a/lib/App/Sqitch/Engine/snowflake.pm
+++ b/lib/App/Sqitch/Engine/snowflake.pm
@@ -200,12 +200,7 @@ has dbh => (
             AutoCommit        => 1,
             odbc_utf8_on      => 1,
             FetchHashKeyName  => 'NAME_lc',
-            HandleError       => sub {
-                my ($err, $dbh) = @_;
-                $@ = $err;
-                @_ = ($dbh->state || 'DEV' => $dbh->errstr);
-                goto &hurl;
-            },
+            HandleError       => $self->_error_handler,
             Callbacks         => {
                 connected => sub {
                     my $dbh = shift;
diff --git a/lib/App/Sqitch/Engine/sqlite.pm b/lib/App/Sqitch/Engine/sqlite.pm
index c5926ebba..fbb286c95 100644
--- a/lib/App/Sqitch/Engine/sqlite.pm
+++ b/lib/App/Sqitch/Engine/sqlite.pm
@@ -77,12 +77,7 @@ has dbh => (
             AutoCommit        => 1,
             sqlite_unicode    => 1,
             sqlite_use_immediate_transaction => 1,
-            HandleError       => sub {
-                my ($err, $dbh) = @_;
-                $@ = $err;
-                @_ = ($dbh->state || 'DEV' => $dbh->errstr);
-                goto &hurl;
-            },
+            HandleError       => $self->_error_handler,
             Callbacks         => {
                 connected => sub {
                     my $dbh = shift;
diff --git a/lib/App/Sqitch/Engine/vertica.pm b/lib/App/Sqitch/Engine/vertica.pm
index 35bea7b35..b75e1ce43 100644
--- a/lib/App/Sqitch/Engine/vertica.pm
+++ b/lib/App/Sqitch/Engine/vertica.pm
@@ -89,12 +89,7 @@ has dbh => (
             RaiseError        => 0,
             AutoCommit        => 1,
             odbc_utf8_on      => 1,
-            HandleError       => sub {
-                my ($err, $dbh) = @_;
-                $@ = $err;
-                @_ = ($dbh->state || 'DEV' => $dbh->errstr);
-                goto &hurl;
-            },
+            HandleError       => $self->_error_handler,
             Callbacks         => {
                 connected => sub {
                     my $dbh = shift;
diff --git a/lib/App/Sqitch/Role/DBIEngine.pm b/lib/App/Sqitch/Role/DBIEngine.pm
index e09fc4df9..bf54c9713 100644
--- a/lib/App/Sqitch/Role/DBIEngine.pm
+++ b/lib/App/Sqitch/Role/DBIEngine.pm
@@ -1016,6 +1016,15 @@ sub rollback_work {
     return $self;
 }
 
+sub _eh {
+    my ($err, $dbh) = @_;
+    $@ = $err;
+    @_ = ($dbh->state || 'DEV' => $dbh->errstr);
+    goto &hurl;
+}
+
+sub _error_handler { \&_eh }
+
 1;
 
 __END__
diff --git a/t/base.t b/t/base.t
index 9098e2bc6..87bc80b18 100644
--- a/t/base.t
+++ b/t/base.t
@@ -2,7 +2,7 @@
 
 use strict;
 use warnings;
-use Test::More tests => 208;
+use Test::More tests => 214;
 # use Test::More 'no_plan';
 use Test::MockModule 0.17;
 use Path::Class;
@@ -420,7 +420,11 @@ is $stderr, '', 'Nothing should have gone to STDERR';
 ($stdout, $stderr) = capture {
     throws_ok {
         $sqitch->run( $^X, 'die.pl', qw(hi there))
-    } qr/unexpectedly returned/, 'run die should, well, die';
+    } 'App::Sqitch::X', 'run die should, well, die';
+    is $@->ident, 'ipc', 'Error ident should be "ipc"';
+    like $@->message,
+        qr/unexpectedly returned/,
+        'The error message should be from the exit error';
 };
 
 is $stdout, "hi there\n", 'The die script should have its STDOUT ummolested';
@@ -442,7 +446,11 @@ is $stderr, '', 'Nothing should have gone to STDERR';
 ($stdout, $stderr) = capture {
     throws_ok {
         $sqitch->shell( "$pl die.pl hi there" )
-    } qr/unexpectedly returned/, 'shell die should, well, die';
+    } 'App::Sqitch::X', 'shell die should, well, die';
+    is $@->ident, 'ipc', 'Error ident should be "ipc"';
+    like $@->message,
+        qr/unexpectedly returned/,
+        'The error message should be from the exit error';
 };
 
 is $stdout, "hi there\n", 'The die script should have its STDOUT ummolested';
@@ -470,8 +478,12 @@ is $sqitch->capture($^X, 'echo.pl', qw(hi there)),
     "hi there\n", 'The echo script output should have been returned';
 like capture_stderr {
     throws_ok { $sqitch->capture($^X, 'die.pl', qw(hi there)) }
-        qr/unexpectedly returned/,
+        'App::Sqitch::X',
         'Should get an error if the command errors out';
+    is $@->ident, 'ipc', 'Error ident should be "ipc"';
+    like $@->message,
+        qr/unexpectedly returned/,
+        'The error message should be from the exit error';
 }, qr/OMGWTF/m, 'The die script STDERR should have passed through';
 
 ##############################################################################
diff --git a/t/cockroach.t b/t/cockroach.t
index 2f6ef875a..181425a02 100644
--- a/t/cockroach.t
+++ b/t/cockroach.t
@@ -140,16 +140,17 @@ my $err = try {
     $cockroach->_capture('--version');
     $cockroach->use_driver;
     $dbh = DBI->connect($uri->dbi_dsn, $uri->user, $uri->password, {
-        PrintError     => 0,
-        RaiseError     => 1,
-        AutoCommit     => 1,
+        PrintError  => 0,
+        RaiseError  => 0,
+        AutoCommit  => 1,
+        HandleError => $cockroach->_error_handler,
         cockroach_lc_messages => 'C',
     });
     $dbh->do("CREATE DATABASE $db");
     $uri->dbname($db);
     undef;
 } catch {
-    eval { $_->message } || $_;
+    $_
 };
 
 DBIEngineTest->run(
diff --git a/t/exasol.t b/t/exasol.t
index a4df70e61..0e6cadbff 100644
--- a/t/exasol.t
+++ b/t/exasol.t
@@ -21,6 +21,7 @@ use Try::Tiny;
 use App::Sqitch;
 use App::Sqitch::Target;
 use App::Sqitch::Plan;
+use App::Sqitch::Role::DBIEngine;
 use lib 't/lib';
 use DBIEngineTest;
 use TestConfig;
@@ -104,7 +105,7 @@ is $exa->_script, join( "\n" => (
 # Make sure the URI query properly affect the client options.
 for my $spec (
     {
-        qry => 'SSLCertificate=SSL_VERIFY_NONE',
+        qry => 'SSLCERTIFICATE=SSL_VERIFY_NONE',
         opt => [qw(-jdbcparam validateservercertificate=0)],
     },
     {
@@ -128,7 +129,7 @@ for my $spec (
         opt => [qw(-jdbcparam authmethod=xyz)],
     },
     {
-        qry => 'SSLCertificate=SSL_VERIFY_NONE&AUTHMETHOD=xyz',
+        qry => 'SSLCERTIFICATE=SSL_VERIFY_NONE&AUTHMETHOD=xyz',
         opt => [qw(-jdbcparam validateservercertificate=0 -jdbcparam authmethod=xyz)],
     },
 ) {
@@ -416,17 +417,26 @@ $uri = URI->new(
     $ENV{EXA_URI} ||
     'db:dbadmin:password@localhost/dbadmin'
 );
-my $err = try {
-    $exa->use_driver;
-    $dbh = DBI->connect($uri->dbi_dsn, $uri->user, $uri->password, {
-        PrintError => 0,
-        RaiseError => 1,
-        AutoCommit => 1,
-    });
-    undef;
-} catch {
-    eval { $_->message } || $_;
-};
+my $err;
+for my $i (1..30) {
+    $err = try {
+        $exa->use_driver;
+        $dbh = DBI->connect($uri->dbi_dsn, $uri->user, $uri->password, {
+            PrintError  => 0,
+            RaiseError  => 0,
+            AutoCommit  => 1,
+            HandleError => $exa->_error_handler,
+        });
+        undef;
+    } catch {
+        $_;
+    };
+
+    # Sleep if it failed but Exasol is still starting up.
+    last unless $err && ($DBI::state || '') eq 'HY000';
+    sleep 1 if $i < 30;
+}
+
 
 DBIEngineTest->run(
     class             => $CLASS,
@@ -439,7 +449,7 @@ DBIEngineTest->run(
         $self->sqitch->probe( $self->client, '-version' );
         $self->_capture('SELECT 1 FROM dual;');
     },
-    engine_err_regex  => qr/\[EXASOL\]\[EXASolution driver\]syntax error/,
+    engine_err_regex  => qr/\[Exasol\]\[Exasol(?:ution)? Driver\]syntax error/i,
     init_error        => __x(
         'Sqitch already initialized',
         schema => $reg2,
diff --git a/t/firebird.t b/t/firebird.t
index f0a04e891..9b3db3e82 100644
--- a/t/firebird.t
+++ b/t/firebird.t
@@ -416,9 +416,10 @@ my $err = try {
 
     # Try to connect.
     my $dbh = DBI->connect($uri->dbi_dsn, $uri->user, $uri->password, {
-        PrintError => 0,
-        RaiseError => 1,
-        AutoCommit => 1,
+        PrintError  => 0,
+        RaiseError  => 0,
+        AutoCommit  => 1,
+        HandleError => $fb->_error_handler,
     });
     $fb_version = $dbh->selectcol_arrayref(q{
         SELECT rdb$get_context('SYSTEM', 'ENGINE_VERSION')
@@ -429,7 +430,7 @@ my $err = try {
     push @cleanup => map { catfile $data_dir, $_ } $reg1, $reg2;
     return undef;
 } catch {
-    eval { $_->message } || $_;
+    $_
 };
 
 END {
diff --git a/t/lib/DBIEngineTest.pm b/t/lib/DBIEngineTest.pm
index c6168e390..0b6a6e13e 100644
--- a/t/lib/DBIEngineTest.pm
+++ b/t/lib/DBIEngineTest.pm
@@ -90,14 +90,14 @@ sub run {
             try {
                 $code->( $engine ) || die 'NO';
             } catch {
-                (my $msg = eval { $_->message } || $_) =~ s/^/# /g;
                 plan skip_all => sprintf(
                     'Unable to live-test %s engine: %s',
                     $class->name,
-                    substr($msg, 2),
+                    $_->message,
                 ) unless $ENV{'LIVE_' . uc $engine->key . '_REQUIRED'};
                 fail 'Connect to ' . $class->name;
-                diag substr $msg, 2;
+                diag $_->message;
+                diag $_->previous_exception;
             } or return;
         }
         if (my $q = $p{version_query}) {
@@ -1774,9 +1774,10 @@ sub run {
 
             # Make a second connection to the database.
             my $dbh = DBI->connect($engine->uri->dbi_dsn, $engine->username, $engine->password, {
-                PrintError        => 0,
-                RaiseError        => 1,
-                AutoCommit        => 1,
+                PrintError  => 0,
+                RaiseError  => 0,
+                AutoCommit  => 1,
+                HandleError => $engine->_error_handler,
             });
             ok !$dbh->selectcol_arrayref($sql->{try_lock})->[0],
                 'Should fail to get same lock in second connection';
diff --git a/t/lib/TestConfig.pm b/t/lib/TestConfig.pm
index 1d396697a..133dfe83c 100644
--- a/t/lib/TestConfig.pm
+++ b/t/lib/TestConfig.pm
@@ -4,6 +4,21 @@ use warnings;
 use base 'App::Sqitch::Config';
 use Path::Class;
 
+BEGIN {
+    # Suppress warnings from Locale::Messages.
+    # https://github.com/gflohr/libintl-perl/issues/14
+    use Locale::Messages;
+    if ($Locale::Messages::package eq 'gettext_pp') {
+        no warnings qw(redefine prototype);
+        no strict 'refs';
+        my $orig = \&Locale::gettext_pp::__locale_category;
+        *{"Locale::gettext_pp::__locale_category"} = sub {
+            local $SIG{__WARN__} = sub {};
+            $orig->();
+        }
+    }
+}
+
 # Creates and returns a new TestConfig, which inherits from
 # App::Sqitch::Config. Sets nonexistent values for the file locations and
 # calls update() on remaining args.
diff --git a/t/mysql.t b/t/mysql.t
index 513542404..95419f700 100644
--- a/t/mysql.t
+++ b/t/mysql.t
@@ -599,9 +599,10 @@ $uri->dbname('information_schema') unless $uri->dbname;
 my $err = try {
     $mysql->use_driver;
     $dbh = DBI->connect($uri->dbi_dsn, $uri->user, $uri->password, {
-        PrintError => 0,
-        RaiseError => 1,
-        AutoCommit => 1,
+        PrintError  => 0,
+        RaiseError  => 0,
+        AutoCommit  => 1,
+        HandleError => $mysql->_error_handler,
     });
 
     # Make sure we have a version we can use.
@@ -618,7 +619,7 @@ my $err = try {
     $uri->dbname($db);
     undef;
 } catch {
-    eval { $_->message } || $_;
+    $_
 };
 
 DBIEngineTest->run(
diff --git a/t/odbc/odbcinst.ini b/t/odbc/odbcinst.ini
index ff2c86e74..fa2eed806 100644
--- a/t/odbc/odbcinst.ini
+++ b/t/odbc/odbcinst.ini
@@ -1,6 +1,6 @@
 [Exasol]
 Description = ODBC for Exasol
-Driver      = /opt/exasol/lib/linux/x86_64/libexaodbc-uo2214lv2.so
+Driver      = /opt/exasol/lib/libexaodbc.so
 
 [Vertica]
 Description = ODBC for Vertica
diff --git a/t/odbc/vertica.ini b/t/odbc/vertica.ini
index c2520cfb6..727dcaf26 100644
--- a/t/odbc/vertica.ini
+++ b/t/odbc/vertica.ini
@@ -1,4 +1,4 @@
 [Driver]
 DriverManagerEncoding=UTF-16
-ODBCInstLib=/usr/lib64/libodbcinst.so
+ODBCInstLib=/usr/lib/x86_64-linux-gnu/libodbcinst.so
 ErrorMessagesPath=/opt/vertica/lib64
diff --git a/t/oracle.t b/t/oracle.t
index 8cfece56a..7a4e0c043 100644
--- a/t/oracle.t
+++ b/t/oracle.t
@@ -16,7 +16,7 @@
 # Client](https://www.oracle.com/database/technologies/instant-client/downloads.html),
 # specifically the Basic, SQL*Plus, and SDK packages. Unpack them into a
 # directory and set `ORACLE_HOME` and `LD_LIBRARY_PATH` to point to that
-# director, and add it to the Path. Then install DBD::Oracle.
+# directory, and add it to the Path. Then install DBD::Oracle.
 #
 # ## Oracle-XE Docker Image
 #
@@ -675,13 +675,14 @@ my $uri = $ENV{SQITCH_TEST_ORACLE_URI} ? URI->new($ENV{SQITCH_TEST_ORACLE_URI})
 my $err = try {
     $ora->use_driver;
     $dbh = DBI->connect($uri->dbi_dsn, $uri->user, $uri->password, {
-        PrintError => 0,
-        RaiseError => 1,
-        AutoCommit => 1,
+        PrintError  => 0,
+        RaiseError  => 0,
+        AutoCommit  => 1,
+        HandleError => $ora->_error_handler,
     });
     undef;
 } catch {
-    eval { $_->message } || $_;
+    $_;
 };
 
 DBIEngineTest->run(
diff --git a/t/pg.t b/t/pg.t
index 18ec94952..b1baf51bb 100644
--- a/t/pg.t
+++ b/t/pg.t
@@ -510,8 +510,9 @@ my $err = try {
     $pg->use_driver;
     $dbh = DBI->connect($uri->dbi_dsn, $uri->user, $uri->password, {
         PrintError     => 0,
-        RaiseError     => 1,
+        RaiseError     => 0,
         AutoCommit     => 1,
+        HandleError    => $pg->_error_handler,
         pg_lc_messages => 'C',
     });
     unless ($ENV{SQITCH_TEST_PG_URI}) {
@@ -520,7 +521,7 @@ my $err = try {
     }
     undef;
 } catch {
-    eval { $_->message } || $_;
+    $_
 };
 
 DBIEngineTest->run(
diff --git a/t/snowflake.t b/t/snowflake.t
index 0f957e04d..0f43fb10b 100644
--- a/t/snowflake.t
+++ b/t/snowflake.t
@@ -541,13 +541,14 @@ $uri->host($uri->host . ".snowflakecomputing.com") if $uri->host !~ /snoflakecom
 my $err = try {
     $snow->use_driver;
     $dbh = DBI->connect($uri->dbi_dsn, $uri->user, $uri->password, {
-        PrintError => 0,
-        RaiseError => 1,
-        AutoCommit => 1,
+        PrintError  => 0,
+        RaiseError  => 0,
+        AutoCommit  => 1,
+        HandleError => $snow->_error_handler,
     });
     undef;
 } catch {
-    eval { $_->message } || $_;
+    $_
 };
 
 DBIEngineTest->run(
diff --git a/t/vertica.t b/t/vertica.t
index 3b42a582f..aac10b2d2 100644
--- a/t/vertica.t
+++ b/t/vertica.t
@@ -347,18 +347,19 @@ for my $i (1..30) {
     $err = try {
         $vta->use_driver;
         $dbh = DBI->connect($uri->dbi_dsn, $uri->user, $uri->password, {
-            PrintError => 0,
-            RaiseError => 1,
-            AutoCommit => 1,
+            PrintError  => 0,
+            RaiseError  => 0,
+            AutoCommit  => 1,
+            HandleError => $vta->_error_handler,
         });
         undef;
     } catch {
-        eval { $_->message } || $_;
+        $_
     };
     # Sleep if it failed but Vertica is still starting up.
     # SQL-57V03: `failed: FATAL 4149:  Node startup/recovery in progress. Not yet ready to accept connections`
     # SQL-08001: `failed: [Vertica][DSI] An error occurred while attempting to retrieve the error message for key 'VConnectFailed' and component ID 101: Could not open error message files`
-    last unless $err && (($DBI::state || '') eq '57V03' || $err =~ /VConnectFailed/);
+    last unless $err && (($DBI::state || '') eq '57V03' || $err->message =~ /VConnectFailed/);
     sleep 1 if $i < 30;
 }