You can add to, delete from, and record entries in the BSDS for active logs using the change log utility. Examples only are shown here; replace the data set names shown with the ones you want to use. For more details of the utility, see The change log inventory utility (CSQJU003).
If an active log has been flagged as "stopped", it is not reused for logging; however, it continues to be used for reading. Use the access method services to define new active log data sets, then use the change log inventory utility to register the new data sets in the BSDS. For example, use:
NEWLOG DSNAME=MQM111.LOGCOPY1.DS10,COPY1 NEWLOG DSNAME=MQM111.LOGCOPY2.DS10,COPY2
If you are copying the contents of an old active log data set to the new one, you can also give the RBA range and the starting and ending time stamps on the NEWLOG function.
To delete information about an active log data set from the BSDS, you could use:
DELETE DSNAME=MQM111.LOGCOPY1.DS99 DELETE DSNAME=MQM111.LOGCOPY2.DS99
To record information about an existing active log data set in the BSDS, use:
NEWLOG DSNAME=MQM111.LOGCOPY1.DS10,COPY2,STARTIME=19930212205198, ENDTIME=19930412205200,STARTRBA=6400,ENDRBA=94FF
You might need to insert a record containing this type of information in the BSDS because:
This procedure must only be used when the queue manager is inactive:
By reusing the old data set names, you do not have to run the change log inventory utility to establish new names in the BSDSs. The old data set names and the correct RBA ranges are already in the BSDSs.
If all your log data sets are the same size, your system will be operationally more consistent and efficient. If the log data sets are not the same size, it is more difficult to track your system's logs, and so space can be wasted.
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