Savepoint Funny
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Here’s an example that makes perfect sense if you know how Oracle handles
data locking. It’s one that I thought I’d published years ago, but it’s not
on th...
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You've got to have a dream. When you lose your dreams, you die.
| 13146182 | ORA-1499 ORA-8102 ORA-600 [kdsgrp1] Bitmap Index / Table mismatch |
Under certain circumstances, described below, a giveback could result in the
root aggregate on the partner node not being brought back to the same point
in time as the other aggregates in the HA pair. Depending on the operations
that were happening while the node was taken over, this could result in
stale data being served.
This scenario happens only when all of the following criteria are met:
* The wafl.group_cp option is enabled ('on' or 'default' if MetroCluster is
configured)
* The node is running Data ONTAP 8.2.x (and the Data ONTAP version does not
include a fix for this issue).
* The node is performing a giveback.
* For user data to be affected, it must reside in the partner's root
aggregate, and write operations must have been initiated in a specific
window of time relative to the giveback.