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Update docs and error message for superuser_reserved_connections.

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Commit ea92368cd1 made max_wal_senders
a separate pool of backends from max_connections, but the documentation
and error message for superuser_reserved_connections weren't updated
at the time, and as a result are somewhat misleading. Update.

This is arguably a back-patchable bug fix, but because it seems quite
minor, no back-patch.

Patch by Nathan Bossart. Reviewed by Tushar Ahuja and by me.

Discussion: http://postgr.es/m/20230119194601.GA4105788@nathanxps13
This commit is contained in:
Robert Haas
2023-01-20 15:23:04 -05:00
parent e86c8b728f
commit 6c1d5ba486
2 changed files with 2 additions and 3 deletions
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3
doc/src/sgml/config.sgml
View File

@ -725,8 +725,7 @@ include_dir 'conf.d'
number of active concurrent connections is at least number of active concurrent connections is at least
<varname>max_connections</varname> minus <varname>max_connections</varname> minus
<varname>superuser_reserved_connections</varname>, new <varname>superuser_reserved_connections</varname>, new
connections will be accepted only for superusers, and no connections will be accepted only for superusers.
new replication connections will be accepted.
</para> </para>
<para> <para>

2
src/backend/utils/init/postinit.c
View File

@ -931,7 +931,7 @@ InitPostgres(const char *in_dbname, Oid dboid,
!HaveNFreeProcs(ReservedBackends)) !HaveNFreeProcs(ReservedBackends))
ereport(FATAL, ereport(FATAL,
(errcode(ERRCODE_TOO_MANY_CONNECTIONS), (errcode(ERRCODE_TOO_MANY_CONNECTIONS),
errmsg("remaining connection slots are reserved for non-replication superuser connections"))); errmsg("remaining connection slots are reserved for superusers")));
/* Check replication permissions needed for walsender processes. */ /* Check replication permissions needed for walsender processes. */
if (am_walsender) if (am_walsender)