The reason I speculated that these are freeabl is because in Steve Adams book, the definition of freeable is that "Chunks contain objects that are normally needed for the duration of a session call, and are freed thereafter ...". Let's see if Steve has some time to clarify this.
Amir -- --Original Message-- -- From: Radoulov, Dimitre [mailto:cichomitiko@(protected)] Sent: Wednesday, February 08, 2006 11:37 AM To: ORACLE-L Cc: Hameed, Amir Subject: Re: "session param valu" in x$ksmlru
>> It seems that these cause a lot of flushes. Are these chunks of type >> "freeable"? > > The session param values (memory allocated at the start of each session) > are large contiguous allocations. > Once the regular pool is chunked up into 4K or smaller pieces large > allocations should come from reserved pool. > So, if you get ORA-04031 (See ORA-04031.ora-code.com) for an allocation such as this, the solution is > usually to increase the size of the reserved pool.
I *think* these allocations are not freeable as long as the session is "alive". Correct me if I'm wrong.