This is an automated email from the ASF dual-hosted git repository.
asf-gitbox-commits pushed a commit to branch past-M2
in repository https://gitbox.apache.org/repos/asf/cayenne.git
The following commit(s) were added to refs/heads/past-M2 by this push:
new b88011a53 CAY-2954 Upgrade notes
b88011a53 is described below
commit b88011a539b5e42ef605c89d67bb68ed92a95452
Author: Andrus Adamchik <[email protected]>
AuthorDate: Tue Jun 16 14:05:39 2026 -0400
CAY-2954 Upgrade notes
---
UPGRADE.md | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/UPGRADE.md b/UPGRADE.md
index f1391977d..5e9a679b3 100644
--- a/UPGRADE.md
+++ b/UPGRADE.md
@@ -55,6 +55,14 @@ Expression caseWhenExp = caseWhen(
## Upgrading to 5.0.M3
+
+* Per [CAY-2954](https://issues.apache.org/jira/browse/CAY-2954) selecting
queries are no longer wrapped in
+transactions internally by Cayenne. Using connections in "auto-commit" mode
instead has a significant positive impact
+on DB performance. This should not affect manually-managed transactions. But
in theory, in some rare cases this may
+still change consistency behavior of disjoint prefetches (as multiple related
selects will no longer be wrapped in a
+single transaction). We'd like to look at the actual cases to propose a
mitigation approach, but one possible
+solution may be changing to "joint" prefetches.
+
* Per [CAY-2956](https://issues.apache.org/jira/browse/CAY-2956) the dedicated
Oracle 8 adapter has been removed.
`org.apache.cayenne.dba.oracle.Oracle8Adapter` and its supporting classes no
longer exist, and the
`OracleSniffer` now maps all Oracle versions to `OracleAdapter` regardless
of the JDBC driver version.
