IRLM Long Lock Detection screen
The ILOCK screen displays all of the currently outstanding IRLM Long Lock contentions in your system.
COMMAND ===> SCROLL ===> CSR
SYSTEM ===> SJSC
CPU 61/ 44 UIC 2540 Paging 0 ES Mig Age N/A Time 11:56:06
CF Structure N/A Deadlock Cycle 00000000
S TRX/JOB HLD/WAIT REGN IMS ID CICS ID SYSTEM PST PSB NAME LOCK NAME DB/AREA RECOVERY TOKEN
T TIME TYPE NUM
_ ________ ________ _____ ________ ________ ______ ____ ________ ________________________________ ________ ________________________
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********************************* END OF LOCKS ********************************
The following table lists the header, ID (used when specifying keywords), and a brief description of each column on this screen.
Column header | Column ID | Description | |
|---|---|---|---|
CF Structure | not applicable | contains the name of the coupling facility structure used by IRLM | |
Deadlock Cycle | not applicable | contains the deadlock cyle number (hexadecimal format) generated by IRLM and passed to IMS As IMS requests longlock data for two cycles, this value is used to uniquely identify when the data was gathered. The Deadlock Cycle field is followed by a Date/Time field, which indicates the time when the SMF record for the first displayed lock entry was written. | |
ST | STATE | identifies the state of the transaction, indicating whether it is a blocker (holder) or a waiter:
| |
TRX/JOB | TRXJOB | name of the transaction in a BMP or MPP region, or the job name for all of the remaining region types | |
HLD/WAIT TIME | LOCKTIME | contains blockers or waiters, depending on the state (ST) value
| |
REGN TYPE | REGNTYPE | identifies the region type in which a transaction can execute The region types are as follows:
| |
IMS ID | IMSID | name given to the IMS region at the time it is brought up | |
CICS ID | CICSID | CICS task identifier, which is an eight-digit ID that is generated by CICS and passed to IMS at the time a CICS application is scheduled | |
SYSTEM | SYSTEM | identifier of the system on which the blocker or waiter is running | |
PST NUM | PSTNUM | Partition Specification Table (PST) number Several PSTs are initialized, and each PST is assigned a unique ID (or PST number) when the IMS region is initially brought up. The PST block is the primary block that is used to dispatch transactions in IMS, and the PST number uniquely identifies each transaction. | |
PSB NAME | PSBNAME | Partition Specification Block (PSB) name This name is given to a PSB at PSBGEN time. This block defines the segments to which a particular application can have access. | |
LOCK NAME | LOCKNAME | unique identifier used by IMS to obtain a lock on a resource The lock name varies between 9 and 11 characters and contains the database management block number (DMB#), the database control block number (DCB#), and the relative byte address (RBA) of the resource (data) for which the lock is requested, separated by slashes. | |
DB/AREA | DBAREA | name given to a database (IMS full-function) or an area (IMS fastpath) at DBDGEN time The name in this field uniquely identifies the database or area the lock is held on by this transaction. | |
RECOVERY | RECYTOKN | contains a 16-byte token used to uniquely identify a unit of work | |
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