Sysview for DB2 Data Collector holding threads on DB2

Products

• SYSVIEW Performance Management Option for DB2 for z/OS
• Database Management for DB2 for z/OS - Performance Suite
• Database Management for DB2 for z/OS - SQL Performance Suite
• Insight Performance Monitor for DB2 UDB for z/OS

Issue/Introduction

There are multiple threads connected to a given DB2 subsystem.  When trying to bring down that DB2, these threads seem to hold onto the subsystem keeping this DB2 from coming down quickly.  Should the datacollector be brought down for the member before bringing down that DB2?  

OMEGAMON shows the same threads.  When the normal -STOP DB2 command is issued, OMEGAMON lets go and DB2 comes down. 

 

Environment

Release : 20.0

Component :Sysview Performance Management for DB for z/OS

Resolution

The recommendation is to bring down Datacollector first. Here is the link from the doc about stopping the datacollector:

STOP THE DATACOLLECTOR