Copyright © TIBCO Software Inc. All Rights Reserved
Copyright © TIBCO Software Inc. All Rights Reserved


Chapter 4 Understanding Journal Processing : Turning Off Journal Processing for Selected Segments

Turning Off Journal Processing for Selected Segments
Why Turn Off Journal Processing?
For selected segments that contain easily re-creatable data for which data recovery is not an issue, you can turn off journal processing for those segments.
While turning off journal processing has the advantage of saving valuable system resources, it is important to note that when journaling is turned off for a segment, that segment can no longer participate in a continuous backup strategy (even if journaling is re-enabled). If you want to re-establish continuous backup for the segment, you must first generate a new master copy of the segment.
Determining Journaling Setting
When a segment first comes online, the JOURNAL Data Object Broker parameter on a segment definition in member DBJCL of the JCL data set determines whether journal processing is initially on or off. In the following example, JOURNAL=N indicates that journal processing is disabled:
DB TYPE=PAGE,ACBS=3,NAME=$SEG0NAM$,ID=2,JOURNAL=N
See Also
TIBCO Object Service Broker Parameters for more information about Data Object Broker parameters.
Methods for Turning Journal Processing On and Off
The first of two ways to turn journal processing on and off for a specific segment is by using TIBCO Object Service Broker operator commands:
F dob_jobname,Dbjrnlon=segname or segnumber
F dob_jobname,Dbjrnloff=segname or segnumber
where:
F (or Modify)
Dbjrnlon or Dbjrnloff
Alternate Method
You can also use the S6BTLADM (Administration Menu) utility to turn journal processing on and off.
See Also
TIBCO Object Service Broker for z/OS Installing and Operating for more information on the S6BTLADM utility and on operator commands.

Copyright © TIBCO Software Inc. All Rights Reserved
Copyright © TIBCO Software Inc. All Rights Reserved