We support servers - DB2UDBv8.1FP16 and os level as 5.2.
we are receiving the errors in the db2diag.log frequently especially during the offline backup.
Errors such as
2008-09-27-02.56.56.774196+060 I15159C385 LEVEL: Error
PID : 757976 TID : 1255 PROC : db2hmon 0
INSTANCE: dumap13 NODE : 000
FUNCTION: DB2 UDB, Automatic Table Maintenance, atmCallHIPostProcess, probe:100
MESSAGE : ZRC=0xFFFE7961=-99999
DATA #1 : <preformatted>
AutoStats: [IBM][CLI Driver] CLI0106E Connection is closed. SQLSTATE=08003
These messages are harmless and safe to ignore. If you don't want this message to occur.. please make sure your health monitor and automatic statistics collection parameters are turned off.
The first is, how do I make backups run faster. When you perform a backup operation, DB2 will automatically choose an optimal value for the number of buffers, the buffer size and the parallelism settings.
so tune the following parameters...
* WITH num-buffers BUFFERS
* PARALLELISM n
* BUFFER buffer-size