Predicting Oracle Transaction Rollback Time

While waiting for a large transaction to roll back, I’ve cooked this spreadsheet which can, to some extent (not precise, just estimated – use at your own risk) predict how long it will take for the rollback to complete.

ScreenshotThe spreadsheet takes as input the amount of undo records used by the transaction at two points in time (USED_UREC field from V$TRANSACTION) and the time you got both values, it then calculates the speed at which the rollback is happening, and makes a prediction.

Click to download the Rollback Prediction Spreadsheet, and please let me know if you like it. Thanks!

This entry was posted in Oracle, Performance, Troubleshoot and tagged , . Bookmark the permalink.

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