CA TLMS Operating System Intercepts (OSIs) intercept processing between the appropriate IBM modules to enable various data set protection functions for standard label (SL), ANSI label (AL), nonlabeled (NL), and bypass label (BLP) tapes. As needed during the intercepts, the CA TLMS SVC (TLMSOSMM) is invoked so that data can be captured from IBM control blocks and sent to CA TLMS through a transaction queue. OMODVOL1 and EMODVOL1 are intercepted and processed according to CA TLMS options. SMS tape user exits are also intercepted.
These OSIs work for all z/OS operating systems. They are not dependent on instruction changes within IBM modules and are not affected by IBM maintenance to OPEN/CLOSE/EOV modules. The OSIs are always dynamically applied and may be dynamically removed.
When a tape is mounted for output, CA TLMS does a verification of each OSI and immediately reports the removal of any OSIs by other products or processes.
NO SMP/E or selection process is required. The intercepts are automatically installed when TLMSRIM is run (normally with CAS9 after an IPL) and verified each time CA TLMS is started. If needed, the OSIs can be dynamically removed by running TLMSRIM with the REINIT parameter.
The following is an example of a CAS9 parameter to apply OSIs:
INIT
The following is an example of a CAS9 parameter to remove OSIs:
REINIT,OSI=NO
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