Hey guys,I had been meeting an issue causing poor Performance in my SAP system.For a full buffered table,I did trace it with ST12 and ST05,I found it's perfectly buffered in AS(as blue background entries in ST05 tracelist),but there were entries with high 'duration' and return code '64'(I know that's mean no records found),instead,the return code '0' entries worked fine,the duration was pretty low.I had learned from documents of IBM/SAP(we're running with DB2 on AIX) that if you are just checking the exists of some records of certain table(access frequently),you may buffer them in AS,for now it seems to be going into opposite direction,that does make sense with long time 'duration'.Detailed information seen the attachments.
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