IBM Tivoli OMEGAMON XE for CICS on z/OS, Version 5.1.0

LSR Pool Analysis situations

The predefined situations in this category monitor the LSR Pool status.

Use the Situation editor in the Tivoli Enterprise Portal for viewing or editing any other LSR Poll situations. When you click the Situation editor icon on the toolbar to open the Situation editor instead of through the Navigator item pop-up menu, the situation is not associated with any Navigator item. Keyboard shortcut: Ctrl + E.

CICSplex_LSRPool1Str_Warning
Warning threshold exceeded for LSR pool 1 string usage.

If all strings are in use, response time is degraded. Use the LSR Pool Status workspace to analyze string and LSR pool use. Additionally, the Bottleneck Analysis workspace can be used to determine the amount of degradation caused by waiting for strings. If there is no evident problem, increase the number of strings in the LSRPOOL Resource Definition.

Formula

If the value of Percent_of_Active_Strings is greater than 80
and the value of Percent_of_Active_Strings is less than or equal to 90
and the value of Pool_ID equals 1
then situation CICSplex_LSRPool1Str_Warning is true.
CICSplex_LSRPool1Str_Critical
This is the critical threshold exceeded for LSR pool 1 string usage.

If all strings are in use, response time is degraded. Use the LSR Pool Status workspace to analyze string and LSR pool use. Additionally, the Bottleneck Analysis workspace can be used to determine the amount of degradation caused by waiting for strings. If there is no evident problem, increase the number of strings in the LSRPOOL Resource Definition.

Formula

If the value of Percent_of_Active_Strings is greater than 90
and the value of Pool_ID equals 1
then situation CICSplex_LSRPool1Str_Critical is true.
CICSplex_LSRPool1Wait_Warning
Warning threshold exceeded for LSR pool 1 task waits.

File activity is being delayed. Use the LSR Pool Status workspace to analyze string and LSR pool use. Additionally, the Bottleneck Analysis workspace and the Impact Analysis function can be used to determine if either string waits are a problem, or if CICS® is competing with other tasks for the same resources. If there is no evident problem, increase the number of strings in the LSRPOOL Resource Definition.

Formula

If the value of Tasks_Waiting is greater than 1
and the value of Tasks_Waiting is less than or equal to 5
and the value of Pool_ID equals 1
then situation CICSplex_LSRPool1Wait_Warning is true.
CICSplex_LSRPool1Wait_Critical
This is the critical threshold exceeded for LSR pool 1 task waits.

File activity is being delayed. Use the LSR Pool Status workspace to analyze string and LSR pool use. Additionally, the Bottleneck Analysis workspace and Impact Analysis function in OMEGAMON XE for CICS on z/OS can be used to determine if either string waits are a problem, or if CICS is competing with other tasks for the same resources. If there is no evident problem, increase the number of strings in the LSRPOOL Resource Definition.

Formula

If the value of Tasks_Waiting is greater than 5
and the value of Pool_ID equals 1
then situation CICSplex_LSRPool1Wait_Critical is true.
CICSplex_LSRPool1Look_Warning
Warning threshold exceeded for LSR pool 1 lookaside.

A successful lookaside is a VSAM read request that was satisfied from a CI currently in an LSR buffer, without incurring the overhead of a physical I/O to a disk device. You can achieve a greater success ratio by increasing the number of buffers defined for the LSR pool. Increasing the number of buffers, however, increases the virtual storage requirement of your CICS region.

Formula

If the value of Lookaside_Ratio is less than 30
and the value of Lookaside_Ratio is greater than or equal to 10
and the value of Pool_ID equals 1
then situation CICSplex_LSRPool1Look_Warning is true.
CICSplex_LSRPool1Look_Critical
This is the critical threshold exceeded for LSR pool 1 lookaside.

A successful lookaside is a VSAM read request that was satisfied from a CI currently in an LSR buffer, without incurring the overhead of a physical I/O to a disk device. You can achieve a greater success ratio by increasing the number of buffers defined for the LSR pool. Increasing the number of buffers, however, increases the virtual storage requirement of your CICS region.

Formula

If the value of Lookaside_Ratio is less than 10
and the value of Pool_ID equals 1
then situation CICSplex_LSRPool1Look_Critical is true.

See also the CICSplex LSR Pool Status attribute group.


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