Problem identify OBJECTS access for a session

Hi when a try to see what object is take to determined session the database hands consult and close conections. The select clause is "select OBJECT from v$access where SID=<NUM>", this sentence consuming big cpu time, all system have a high numer of the synonyms (23299).
Why i can't get result this simple select?

I am not licensed for AWR so I cannot tell you what to post; however, if the report is anything like statspack I would start by just posting the ratio and top waits on the first page or two providing you do not see any statistic that appears to be of interest. If you find something of interest I would try to find the related information and confine the post to that. Based on responses you can post more.
I see from what you posted that your system appears to be using the PQO option. Make sure you are not overloading Oracle by trying to run an excessive number of PQO processes concurrently. PQO is brute force tuning and does not scale well, that is, the feature was not desiged for use on concurrent SQL.
I have trouble reading unalligned numbers and I no longer tune databases very often but your reloads number appear high for the other values presented. Is the application written using bind variable or is it stringing together SQL with constant values and passing in new SQL all the time? If the application is using bind variables then the high reloads might indicate that the shared pool is too small forcing Oracle to flush SQL that it will later rerun too often.
There are some shared pool sizing scripts on metalink you might want to run. The scripts over-estimate space requirements but can ball-park you in.
From the information presented that is all that comes to mind.
HTH -- Mark D Powell --

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