Evaluating the cost of Object Analysis

In an environment with significant levels of I/O activity on monitored DASD volumes, you can evaluate the cost of activating the Object Analysis function.

Procedure

When Object Analysis is started, thread details are also collected that correlate thread activity to Db2 getpage and I/O.

You can dynamically START/STOP the OA function using a MODIFY (F) command:

If Event Manager (EVENTMGR) is not yet started, start EVENTMGR:

At the command prompt, type or complete typing a system command, then press Enter:

===> /F IBMO2, START EVENTMGR

Start OA dynamically (dependent on EVENTMGR):

At the command prompt, type or complete typing a system command, then press Enter:

===> /F IBMO2, F EVENTMGR,START
===> DB2=SS01,INTERVAL=15,THREAD=NO

Stop OA dynamically after you collect the Db2 data:

At the command prompt, type or complete typing a system command, then press Enter:

 ===> /F IBMO2, F EVENTMGR,STOP
===> DB2=SS01,INTERVAL=15,THREAD=NO

To avoid reconfiguration of the OMEGAMON for DB2® Performance Expert runtime members in the rHilev.rte_name.RKD2* user libraries, START/STOP these functions dynamically.