We have an LPAR with 12 GB of memory. DB2 9.5 fixpak 4 on AIX 6.1. There are two instances. An application using a database under one instance is having performance issues. The websphere application slows down and pretty much comes to a stand still. We have around 200+ connections most of the time. During non-peak hours it is at 100-150 connections. When monitoring the instance, the memory usage that db2pd showed was a few MB. The shared memory of the database through db2top shows around 8-9 GB when the app hangs. nmon shows high physical memory usage and paging around 20% or so. Self tuning has been enabled. When the application was shutdown and database reactivated, the usage goes to a few MB but slowly climbs up.
I have seen quite a few APARs like JR30285 - Pervasive memory leak when compiling SQL statements that use SQL/XML functions. It has been tough to do an upgrade as there are application changes coming up.
Did anyone experience this kind of a problem and did an upgrade help? Someone posted an article on the net saying going to a higher level of fixpack did not help. Any suggestions ???
I have seen quite a few APARs like JR30285 - Pervasive memory leak when compiling SQL statements that use SQL/XML functions. It has been tough to do an upgrade as there are application changes coming up.
Did anyone experience this kind of a problem and did an upgrade help? Someone posted an article on the net saying going to a higher level of fixpack did not help. Any suggestions ???