| index monitoring [message #467151] |
Thu, 22 July 2010 06:03  |
prashant_ora
Messages: 196
Registered: July 2010
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Senior Member |
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I have no of indexes in my schema, now i do not know whether each index is using or not, for this i want to put every index in monitoring , now my question is what would be the performance impact on the database if i do the same.whether my online transaction performance will go down or my reports performance will go down.
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| Re: index monitoring [message #467170 is a reply to message #467162] |
Thu, 22 July 2010 07:47  |
John Watson
Messages: 8964
Registered: January 2010
Location: Global Village
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Senior Member |
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To expand a little on Michel's answer, the monitoring is done only when statements are parsed, not when they are executed.
But what I have never understood is why the monitoring view V$OBJECT_USAGE has that name. It is populated from data dictionary tables, as can be seen if you runselect text from dba_views where VIEW_NAME='V$OBJECT_USAGE'; |
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