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

CICSplex LSR Pool Status attribute group

The CICSplex LSR Pool Status attribute group provides information about the Local Shared Resource (LSR) pools that have been built in CICS for VSAM files and their impact on performance.

Note:
The attributes within the CICSplex LSR Pool Status group are stored for historical retrieval within the Tivoli Data Warehouse. Selected attributes within this group are candidates for the TDW's summarization and pruning features.

Active Strings The number of currently active strings within the LSR pool. The value format is an integer of maximum four bytes.

Active Strings HWM The highest number of concurrently active strings within the LSR pool. The value format is an integer of maximum four bytes.

CICS Region Name Indicates the job name or modify ID of the CICS region being monitored. Each CICS region in a z/OS operating system has a unique name. This name is an alphanumeric string, with a maximum of eight characters, and case-sensitive. CICS region names are always in uppercase characters.

Create Time The time the LSR pool was created in the CICS region.

Delete Time The time the LSR pool was deleted from the CICS region.

Hiperspace Buffers The indicator of whether hiperspace buffers are being used in the CICS region. The values are Yes or No.

Lookaside Hits The number of successful read requests that VSAM was able to satisfy without initiating an I/O operation; that is, the requested index record was already present in one of the buffer resident Control Intervals. The value format is an integer of maximum four bytes.

Lookaside Ratio Indicates the percentage of VSAM read requests that were satisfied without initiating I/O because the Control Interval (CI) was already resident in the buffer pool. The value format is a percentage in the range of 0-100.

Maximum Key Length The length of the largest key of a VSAM data set which might use this LSR pool. The value format is an integer of maximum two bytes. The range can be 0 - 255.

Open ACBs The number of open application control blocks in the CICS region. The value format is an integer of maximum four bytes.

Origin Node The combination of z/OS System ID (SMFID) and CICS region name. The value format is an alphanumeric string, maximum 32 bytes, and case-sensitive.

When a situation is true, the system compares the origin node name in the attribute to the names of managed systems assigned to the item. If the origin node name matches the name of a managed system, the status of the item changes accordingly. If the names of the origin node and the managed systems do not match, the status of the item remains unchanged.

Percent of Active Strings Indicates the percentage of strings that are currently active. The value format is a percentage in the range of 0-100.

This value is computed by dividing the number of active strings by the total number of strings.

Pool ID Identifies the LSR pool with an integer value of maximum two bytes in the 1 to 255 range.

Pool Location The location of the application control blocks and buffers.

Pool Status Indicates the status of the LSR pool. These are the values:

Pool Type Indicates the type of subsystem using the LSR pool. The value is CICS.

Source of CI Size The source either computed or defined, of the control interval size for the buffer pool. The D (defined) value states that the control interval size is explicitly specified in the LSR Pool definition. The C (computed) value states that the source for the control interval size is computed by CICS.

Source of String Number The source either computed or defined, for the number of strings in the LSR pool. The D (defined) value states that the source of the number of strings is explicitly specified in the LSR Pool definition. The C (computed) value states that the source for the number of strings is computed by CICS.

String Wait HWM The peak number of tasks concurrently waiting for strings against the file. The value format is an integer of maximum four bytes.

System ID Indicates the four character name that uniquely identifies an active z/OS operating system within a given CICSplex. The value format is an alphanumeric string, maximum four characters, and case-sensitive. z/OS System IDs are always in uppercase characters.

Tasks Waiting Indicates the number of current string waits in the system. The value format is an integer of maximum four bytes.

Total Buffers The total number of buffers. The value format is an integer of maximum four bytes.

Total Reads The total number of buffer reads, which is number of times a Control Interval has to be read from disk. Increasing the buffer allocation decreases this activity. The value format is an integer of maximum four bytes.

Total Strings The total number of strings. The value format is an integer of maximum four bytes.

Total String Waits The total number of string waits; this time value is measured to three decimal places. The value can be entered in the hh:mm:ss.ddd format, for example, 00:20:00.567 or as sssssss.ddd, for example 1200.567. If you are using variable substitution, the value in this example would display as 1200567. The value format is an integer of maximum four bytes.

Total Writes The number of buffer WRITEs to the temporary storage data set. This includes both WRITEs necessitated by recovery requirements and WRITEs forced by the buffer being needed to accommodate another Control Interval. The value format is an integer of maximum four bytes.


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