Tom, I have seen the server get sluggish after running a long time,
and I suspect a memory leak was the cause.  I can't remember if 4.2.1.9
had the problem.  I am at 4.2.3.2 and it is running good.

Bill

At 11:37 AM 12/24/2002, you wrote:
>We are running a 4.2.1.9 TSM server under OS/390. We started seeing
>crippling performance problems when the database got up around 15
>gigabytes. Increases in bufpoolsize, region size, and available real
>memory (by shifting memory from another logical partition on the
>same processor complex) had only a temporary effect. It now appears
>that each time we stop and restart the server we get about one day
>of pretty good performance, followed by a day of margional performance,
>followed by one or more days of catostrophic performance. The buffer
>pool hit rate seems to decrease steadily after each restart. This
>pattern of behavior suggests a memory leak. Does the 4.2.1.9 server
>have known problems in this regard?

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Bill Colwell
C. S. Draper Lab
Cambridge Ma.