diff --git a/R/backend-oracle.R b/R/backend-oracle.R
index 91000ff0f..c340ca1c2 100644
--- a/R/backend-oracle.R
+++ b/R/backend-oracle.R
@@ -11,6 +11,11 @@
 #' * Custom subquery generation (no `AS`)
 #' * `setdiff()` uses `MINUS` instead of `EXCEPT`
 #'
+#' Note that versions of Oracle prior to 23c have limited supported for
+#' `TRUE` and `FALSE` and you may need to use `1` and `0` instead.
+#' See <https://oracle-base.com/articles/23c/boolean-data-type-23c> for
+#' more details.
+#'
 #' Use `simulate_oracle()` with `lazy_frame()` to see simulated SQL without
 #' converting to live access database.
 #'
diff --git a/man/backend-oracle.Rd b/man/backend-oracle.Rd
index 75aec90f4..d68275cf0 100644
--- a/man/backend-oracle.Rd
+++ b/man/backend-oracle.Rd
@@ -18,6 +18,11 @@ are:
 \item \code{setdiff()} uses \code{MINUS} instead of \code{EXCEPT}
 }
 
+Note that versions of Oracle prior to 23c have limited supported for
+\code{TRUE} and \code{FALSE} and you may need to use \code{1} and \code{0} instead.
+See \url{https://oracle-base.com/articles/23c/boolean-data-type-23c} for
+more details.
+
 Use \code{simulate_oracle()} with \code{lazy_frame()} to see simulated SQL without
 converting to live access database.
 }