db2fmp consumes more than 90% CPU

DB2 v9.5.0.4

AIX 5300-08-02-0822

I've problem with db2fmp that consumes over 90% of CPU

I found some reference to set KEEPFENCED=NO that should solve this issue, but it doesn't help us.

We have several systems with the same configuration, but this one is the only one having problem.

I just did an upgrade from R3 470 ext 200 to ERP60 ehp4. I this system the downtime was ten hours, in an other system the downtime was 4 hours, db size is almost the same. I guess this process is one of the reasons.

Any ideas?