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authorNathan Bossart2025-05-07 19:47:36 +0000
committerNathan Bossart2025-05-07 19:47:36 +0000
commit16bf24e0e471c975f0877d6612eacdae7ce4a30e (patch)
tree0ce1620d597b90d28fb6b428693df925a21347c8 /doc/src
parent5f4d98d4f3718cf7a0597c37f3ee4a4485de6ef8 (diff)
Remove pg_replication_origin's TOAST table.
A few places that access this catalog don't set up an active snapshot before potentially accessing its TOAST table. However, roname (the replication origin name) is the only varlena column, so this is only a problem if the name requires out-of-line storage. This commit removes its TOAST table to avoid needing to set up a snapshot. It also places a limit on replication origin names so that attempts to set long names will fail with a more user-friendly error. Those chosen limit of 512 bytes should be sufficient to avoid "row is too big" errors independent of BLCKSZ, but it should also be lenient enough for all reasonable use-cases. Bumps catversion. Reviewed-by: Michael Paquier <michael@paquier.xyz> Reviewed-by: Amit Kapila <amit.kapila16@gmail.com> Reviewed-by: Euler Taveira <euler@eulerto.com> Reviewed-by: Nisha Moond <nisha.moond412@gmail.com> Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/ZvMSUPOqUU-VNADN%40nathan
Diffstat (limited to 'doc/src')
-rw-r--r--doc/src/sgml/func.sgml1
1 files changed, 1 insertions, 0 deletions
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index bb6e5ab9ff7..27ec46105f4 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -29940,6 +29940,7 @@ postgres=# SELECT '0/0'::pg_lsn + pd.segment_number * ps.setting::int + :offset
<para>
Creates a replication origin with the given external
name, and returns the internal ID assigned to it.
+ The name must be no longer than 512 bytes.
</para></entry>
</row>