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db file scattered read, latch free, db file sequential read

Posted on 2011-03-08

Oracle Database

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Last Modified: 2012-05-11

Hello,

I try to understand why some queries hang because there are some events db file scattered read, latch free, db file sequential read.
How can I resolve this problem, please?

Thanks

Regards

Bibi

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Question by:bibi92

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2 Comments

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Accepted Solution

by:slightwv (䄆 Netminder)

slightwv (䄆 Netminder) earned 2000 total points

ID: 350736612011-03-08

Define 'hang' or are you just seeing the 'wait' events? All Oracle queries 'wait'. That by itself isn't an issue.

Are you tracing specific SQL and seeing high wait events that are becoming a performance issue?

Author Closing Comment

by:bibi92

ID: 350813342011-03-09

Thanks regards bibi

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