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Don't count background workers against a user's connection limit.

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Doing so doesn't seem to be within the purpose of the per user
connection limits, and has particularly unfortunate effects in
conjunction with parallel queries.

Backpatch to 9.6 where parallel queries were introduced.

David Rowley, reviewed by Robert Haas and Albe Laurenz.
This commit is contained in:
Andrew Dunstan
2017-02-01 17:52:35 -05:00
parent aedd554f84
commit f1169ab501
8 changed files with 47 additions and 3 deletions
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2
src/backend/utils/init/postinit.c
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@ -350,7 +350,7 @@ CheckMyDatabase(const char *name, bool am_superuser)
*/
if (dbform->datconnlimit >= 0 &&
!am_superuser &&
CountDBBackends(MyDatabaseId) > dbform->datconnlimit)
CountDBConnections(MyDatabaseId) > dbform->datconnlimit)
ereport(FATAL,
(errcode(ERRCODE_TOO_MANY_CONNECTIONS),
errmsg("too many connections for database \"%s\"",