Hello,
The datfrozenxid bug is fixed in 8.3.4,
but do I need additional operations after upgrade postgres binaries?
| Fix potential miscalculation of datfrozenxid (Alvaro)
| This error may explain some recent reports of failure
| to remove old pg_clog data.
I assume that pg_database.datfrozenxid is wrongly set to 3
(FirstNormalTransactionId) if the bug has occurred.
1. Can I use the following SQL to check whether the bug has occurred? SELECT * FROM pg_database WHERE
datfrozenxid= 3 (will return some rows under the bug.)
2. What is needed to fix the corrupted system catalog, something like the following SQL? UPDATE pg_database
SETdatfrozenxid = relfrozenxid FROM (SELECT relfrozenxid FROM pg_class WHERE relkind IN ('r',
't') ORDER BY age(relfrozenxid) DESC LIMIT 1) AS tmp WHERE datname = current_database();
Regards,
---
ITAGAKI Takahiro
NTT Open Source Software Center
