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DBCTL performance views
The DBCTL performance views display resource usage and workflow performance for a single IMS subsystem. The following DBCTL performance views are provided:
- DBCTL Performance Graph, real time (DBCDTLGR)
- DBCTL Performance Graph, interval (DBCDTLG)
- DBCTL Performance, real time (DBCDTLR)
- DBCTL Performance, interval (DBCDTL)
The following figure is an example of a real-time DBCTL performance view. You can use the DBCDTLGR view and the other DBCTL performance views to determine if IMS is meeting its performance objectives. DBCDTLGR shows how critical resources, including application region processing, are being used by IMS.
The UOWs Per Second and UOWs Avg Elapsed fields are indicators of whether IMS is meeting general throughput and response time objectives.
If IMS is not meeting its objectives, you can check the operating system fields for indications of system resource competition.
Example of a DBCTL Performance view (DBCDTLGR)
IMSplex..... Monitored...
CCTL Systems 2 Tot Regions 5
BMP Regions 1
Avg Thread.. ...25...50...75..100 Threads..... .......125.......255
Occupancy.. 20 *** Allocated.. 10 *
High Water. 12 *
Low Water.. 10 *
UOWs........ ...25...50...75..100 Threads with ....5...10...15...20
Per Second. 0.2 Excess CPU. 0
Excess DLI. 0
UOWs........ ....|....1....|....2 Excess SQL. 0
Avg Elapsed 0.10 *
IMS Job Name IMSxxx MVS Name.... SYSD
IMS CPU Util 10 MVS CPU Util 56
IMS Paging.. 0 MVS Paging.. 45
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