[b/341297017] Add used-space-details, db-objects SQLs (#432)

Add used-space-details and db-objects for databases supporting PDBs.

dumper/app/src/main/java/com/google/edwmigration/dumper/application/dumper/connector/oracle/StatsTaskListGenerator.java

@@ -39,9 +39,14 @@ ImmutableList<Task<?>> createTasks(ConnectorArguments arguments) throws IOExcept
         ImmutableList.of(
             OracleStatsQuery.create("db-features", NATIVE),
             OracleStatsQuery.create("db-instances", NATIVE),
+            OracleStatsQuery.create("db-objects", NATIVE),
+            // The version of db-objects that gets SYNONYM objects, for which owner is PUBLIC.
+            // A JOIN is performed to exclude objects which appear in the cdb_synonyms table.
+            OracleStatsQuery.create("db-objects-synonym-public", NATIVE),
             OracleStatsQuery.create("pdbs-info", NATIVE),
             OracleStatsQuery.create("app-schemas-pdbs", NATIVE),
             OracleStatsQuery.create("app-schemas-summary", NATIVE),
+            OracleStatsQuery.create("used-space-details", NATIVE),
             OracleStatsQuery.create("hist-cmd-types", STATSPACK)
             // TODO: add entries for other SQLs to this list
             );

dumper/app/src/main/resources/oracle-stats/native/db-objects-synonym-public.sql

@@ -0,0 +1,52 @@
+-- Copyright 2022-2024 Google LLC
+-- Copyright 2013-2021 CompilerWorks
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+SELECT
+  B.con_id "ConId",
+  'PUBLIC' "Owner",
+  'SYNONYM' "ObjectType",
+  B.editionable "Editionable",
+  -- This looks similar to filtering with WHERE and using count() instead of sum().
+  --
+  -- It is not similar. DB will see the LIKE inside a WHERE predicate and decide to
+  -- replace a HASH JOIN with NESTED LOOPS. The JOIN arguments have >10k rows each,
+  -- so performance-wise the nested loop would be terrible.
+  sum(
+    CASE WHEN B.object_name LIKE '/%' THEN 0
+    WHEN B.object_name LIKE 'BIN$%' THEN 0
+    ELSE 1 END
+  ) "Count"
+FROM (
+  SELECT
+    A.con_id,
+    A.editionable,
+    A.object_name,
+    A.owner
+  FROM cdb_objects A
+  WHERE A.object_type = 'SYNONYM'
+    AND A.owner = 'PUBLIC'
+) B
+LEFT JOIN (
+  SELECT
+    C.synonym_name,
+    C.con_id,
+    C.table_owner
+  FROM cdb_synonyms C
+  WHERE C.owner = 'PUBLIC'
+    AND C.table_owner IS NOT NULL
+) D ON B.object_name = D.synonym_name
+  AND B.con_id = D.con_id
+WHERE D.table_owner IS NULL
+    AND B.owner = 'PUBLIC'
+GROUP BY B.con_id, B.editionable

dumper/app/src/main/resources/oracle-stats/native/db-objects.sql

@@ -0,0 +1,63 @@
+-- Copyright 2022-2024 Google LLC
+-- Copyright 2013-2021 CompilerWorks
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+SELECT
+  A.con_id "ConId",
+  A.owner "Owner",
+  A.object_type "ObjectType",
+  A.editionable "Editionable",
+  count(1) "Count"
+FROM cdb_objects A
+WHERE A.owner NOT LIKE '%SYS'
+  AND A.object_name NOT LIKE 'BIN$%'
+GROUP BY
+  A.con_id,
+  A.owner,
+  A.object_type,
+  A.editionable
+UNION ALL (
+  SELECT
+    B.con_id "ConId",
+    'SYS' "Owner",
+    'DIRECTORY' "ObjectType",
+    B.editionable "Editionable",
+    count(1) "Count"
+  FROM cdb_objects B
+  WHERE B.owner = 'SYS'
+    AND B.object_type = 'DIRECTORY'
+    AND B.object_name NOT LIKE 'BIN$%'
+  GROUP BY
+    B.con_id,
+    B.owner,
+    B.object_type,
+    B.editionable
+)
+UNION ALL (
+  SELECT
+    C.con_id "ConId",
+    C.owner "Owner",
+    C.object_type "ObjectType",
+    C.editionable "Editionable",
+    count(1) "Count"
+  FROM cdb_objects C
+  WHERE C.owner NOT LIKE '%SYS'
+    AND C.owner <> 'PUBLIC'
+    AND C.object_type = 'SYNONYM'
+    AND C.object_name NOT LIKE 'BIN$%'
+  GROUP BY
+    C.con_id,
+    C.owner,
+    C.editionable,
+    C.object_type
+)

dumper/app/src/main/resources/oracle-stats/native/used-space-details.sql

@@ -0,0 +1,21 @@
+-- Copyright 2022-2024 Google LLC
+-- Copyright 2013-2021 CompilerWorks
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+SELECT A.con_id "ConId",
+       A.owner "Owner",
+       A.segment_type "SegmentType",
+       SUM(bytes) "Bytes"
+       FROM cdb_segments A
+       WHERE A.owner NOT LIKE '%SYS'
+       GROUP BY A.con_id, A.owner, A.segment_type