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Clarify terminology standalone backend vs. single-user mode

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Most of the documentation uses "single-user mode", so use that in the
code as well.  Adjust the documentation to match the new error message
wording.  Also add a documentation index entry for "single-user mode".

Based-on-patch-by: Jeff Janes <jeff.janes@gmail.com>
This commit is contained in:
Peter Eisentraut
2013-06-20 23:03:18 -04:00
parent 4c54e87a86
commit 7dfd5cd21c
3 changed files with 12 additions and 8 deletions
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6
src/backend/access/transam/varsup.c
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@@ -73,7 +73,7 @@ GetNewTransactionId(bool isSubXact)
* If we're past xidVacLimit, start trying to force autovacuum cycles.
* If we're past xidWarnLimit, start issuing warnings.
* If we're past xidStopLimit, refuse to execute transactions, unless
* we are running in a standalone backend (which gives an escape hatch
* we are running in single-user mode (which gives an escape hatch
* to the DBA who somehow got past the earlier defenses).
*
* Note that this coding also appears in GetNewMultiXactId.
@@ -114,14 +114,14 @@ GetNewTransactionId(bool isSubXact)
(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
errmsg("database is not accepting commands to avoid wraparound data loss in database \"%s\"",
oldest_datname),
errhint("Stop the postmaster and use a standalone backend to vacuum that database.\n"
errhint("Stop the postmaster and vacuum that database in single-user mode.\n"
"You might also need to commit or roll back old prepared transactions.")));
else
ereport(ERROR,
(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
errmsg("database is not accepting commands to avoid wraparound data loss in database with OID %u",
oldest_datoid),
errhint("Stop the postmaster and use a standalone backend to vacuum that database.\n"
errhint("Stop the postmaster and vacuum that database in single-user mode.\n"
"You might also need to commit or roll back old prepared transactions.")));
}
else if (TransactionIdFollowsOrEquals(xid, xidWarnLimit))