postgres.git / summary / log / commit / refs

commit    834b80464d653c976787f5b5849fa0595678d0a0
Author:   Bruce Momjian <bruce@momjian.us>
Date:     Thu Mar 12 19:42:35 2020 +0000
First released in: 13.0, 9.5.22, 9.6.18, 10.13, 11.8, 12.3

    dummy commit


doc/src/sgml/mvcc.sgml | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/doc/src/sgml/mvcc.sgml b/doc/src/sgml/mvcc.sgml index f8c96551119..95465d581b6 100644 --- a/doc/src/sgml/mvcc.sgml +++ b/doc/src/sgml/mvcc.sgml @@ -1039,9 +1039,9 @@ ERROR: could not serialize access due to read/write dependencies among transact </tip> <para> - Once acquired, a lock is normally held till end of transaction. But if a + Once acquired, a lock is normally held until the end of the transaction. But if a lock is acquired after establishing a savepoint, the lock is released - immediately if the savepoint is rolled back to. This is consistent with + immediately if the savepoint is rolled back. This is consistent with the principle that <command>ROLLBACK</command> cancels all effects of the commands since the savepoint. The same holds for locks acquired within a <application>PL/pgSQL</application> exception block: an error escape from the block @@ -1178,7 +1178,10 @@ ERROR: could not serialize access due to read/write dependencies among transact conflicting locks on the same row, even in different subtransactions; but other than that, two transactions can never hold conflicting locks on the same row. Row-level locks do not affect data querying; they - block only <emphasis>writers and lockers</emphasis> to the same row. + block only <emphasis>writers and lockers</emphasis> to the same + row. Row-level locks are released at transaction end or during + savepoint rollback, just like table-level locks. + </para> <variablelist> [parent: 9b2009c4cfe1]