Convert TLMS RESERVES to MIM/GRS ENQ's.
Article ID: 109932
Updated On:
Products
TLMS Tape Management
Issue/Introduction
What is the process to convert the TLMS RESERVES to MIM/GRS ENQ's?
Environment
z/OS TLMS GRS MIM
Resolution
Multi-System Environment Considerations
Convert CA TLMS RESERVEs to global ENQUEUEs in environments where a single resource manager (MIM or GRS) controls the DASD. Business Value: By converting CA TLMS RESERVEs to global ENQUEUES you are reducing the possibility of experiencing application slowdowns or lockouts due to contention for other resources on the volume.
Additional Considerations: Consider the following conditions when sharing the VMF and ALOG data sets among multiple systems:
■ The sharing systems need not belong to the same SYSPLEX, and do not have to be at the same MVS level.
■ The CA TLMS maintenance levels of the sharing systems need not be the same, but new features or enhancements may be usable only when supported by all systems.
■ The CA TLMS installation libraries may or may not be shared or cloned. The use of a single CAI.CTAPOPTN parmlib simplifies maintenance and control of all system options and user modifications. When the Realtime Retention Assignment feature is used, the same Retention Master File (RMF) should be used on all the systems to ensure consistent results.
Convert CA TLMS RESERVEs to global ENQUEUES for the VMF and ALOG resources only. The following table lists the resources:
Resource Major Name Minor Name
VMF TLMSVMFQ TLMSVMFQ
VMF (extend) TLMSVMFQ TLMSVMFX
ALOG UPDCTL TLMSALOG
If the RESERVEs are converted, this must be done on all sharing systems. If the RESERVEs are not converted, the DASD volumes which VMF and ALOG reside on should not contain other data sets that are frequently used during tape processing, like system catalogs or control data sets of DASD management or security products. You prevent performance degradation or potential lockout situations this way. All CA TLMS resources other than the VMF and ALOG must be controlled locally.
Convert CA TLMS RESERVEs to global ENQUEUEs in environments where a single resource manager (MIM or GRS) controls the DASD. Business Value: By converting CA TLMS RESERVEs to global ENQUEUES you are reducing the possibility of experiencing application slowdowns or lockouts due to contention for other resources on the volume.
Additional Considerations: Consider the following conditions when sharing the VMF and ALOG data sets among multiple systems:
■ The sharing systems need not belong to the same SYSPLEX, and do not have to be at the same MVS level.
■ The CA TLMS maintenance levels of the sharing systems need not be the same, but new features or enhancements may be usable only when supported by all systems.
■ The CA TLMS installation libraries may or may not be shared or cloned. The use of a single CAI.CTAPOPTN parmlib simplifies maintenance and control of all system options and user modifications. When the Realtime Retention Assignment feature is used, the same Retention Master File (RMF) should be used on all the systems to ensure consistent results.
Convert CA TLMS RESERVEs to global ENQUEUES for the VMF and ALOG resources only. The following table lists the resources:
Resource Major Name Minor Name
VMF TLMSVMFQ TLMSVMFQ
VMF (extend) TLMSVMFQ TLMSVMFX
ALOG UPDCTL TLMSALOG
If the RESERVEs are converted, this must be done on all sharing systems. If the RESERVEs are not converted, the DASD volumes which VMF and ALOG reside on should not contain other data sets that are frequently used during tape processing, like system catalogs or control data sets of DASD management or security products. You prevent performance degradation or potential lockout situations this way. All CA TLMS resources other than the VMF and ALOG must be controlled locally.
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