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by AlterEgo20
3731 days ago
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Even a single rare rollback can kill a prod DB. We had a situation when a bug in our code caused a series of huge UPDATEs in Oracle DB and LOCKed some critical tables. After ~2 hours we found this session and killed it. The problem - we had to wait for 2 more hours with dead prod while Oracle was rolling back everything. In Oralce killed sessions still hold their locks while rolling back. In Postgres rollback is almost instant. |
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