Database Memory & 4030/4031 (MOSC)

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Please help me to understand about shared pool components

in Database Memory & 4030/4031 (MOSC) 3 commentsAnswered

When I ran select on v$sgastat view a list of shared pool components. Most of it I do not have any idea what is it about. Usually I will cared most about Free Memory as I guess that means how much free memory I have in my shared pool.

Other's like KGH: NO ACCESS is usually the culprit for ORA-4031 errors where the DB ran out of shared memory. So the solution would be to cleared the shared pool and increase the SGA TARGET to a higher value.

How about the rest such as SQLA & KGLH0? I can't seem to find any info regarding this online. These 2 seems to appear at the top 2 of V$SGASTAT view besides Free Memory. Should I be concern if these 2 have high values?

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