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snapshot too old error

Posted on 2012-08-13
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Last Modified: 2012-08-27
How we will resolve snapshot too old error in 9i, 10g and 11g

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Shall I ask you what are the major causes of snap shot too old error
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Question by:tomvv
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by:johnsone
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The major cause of snapshot too old in my experience is fetch across commits.  This is in a PL/SQL procedure where there is a loop that contains a commit and the statements in the loop are updating/deleting the table that is being selected from.

To correct, a combination of the following are used:

Increase undo_retention parameter
Increase the size of the undo tablespace
Re-write the code
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