Database Administration (MOSC)

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UNDO DATAFILE GROWING UNEXPECTEDTLY

edited Dec 6, 2017 4:08AM in Database Administration (MOSC) 10 commentsAnswered

Hello,

I have a DB where the undo TS has a single undo datafile which grows to 33 GB for no obvious reason.

My undo retention is on 3600 sec and the longest running task i can see in v$longops is 3000 sec.

I know how to shrink the DF, but i need to find the reason why this file is growing as i am in a development environment and after releasing the product many troubles can occur due to the free space of this partition.

Furthermore i know there were OS limitations to older versions where the DF could not grow further than 33GB.

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