We are running DB2 on AIX for SAP ERP ECC 6.0. In the last month, we have experienced performance issues where all system processing comes to a complete standstill ... user interactive processes as well as batch. The situation always clears itself after a period of about 15 minutes without any action on our part. The situation will recur once a week or so, sometimes more than once a week.
Nothing has changed in our landscape, except that we have recently implemented asynchronous HADR with a disaster recovery server in our metropolitan area network. We regularly monitor the log shipping buffers, and they are at 0% almost all of the time (the exception being 1-2% full).
Unfortunately, my Basis administrator and I are not well-versed in troubleshooting. I can see the results of the slowdown in ST03N / STAD in terms of excessive processing time. But I am unsure of how to diagnose the root cause of the logjam. I recently found the attached IBM support document, which may provide some help, but perhaps one of you might have an idea of areas for us to check.
Thanks in advance.
Michele