Automatic media imaging
If you are using linear logging, you can periodically take media images. These images allow you to recover objects if they are damaged.
By default, scheduling media imaging is a manual process. You can also configure media imaging to be automatic. If you configure automatic media imaging, the queue manager schedules the imaging when workload permits. Administration is simplified and performance impact is minimized.
You enable automatic media imaging, and define how a queue manager implements it, by setting the
following queue manager attributes by using the ALTER QMGR MQSC command:
- IMGSCHED
- Set this attribute to
AUTOto enable automatic media imaging for the queue manager. if you enable automatic media imaging, use these two attributes to tune when images are taken:- IMGINTVL
- Specifies a target frequency for recording media images. Specify a value in minutes, the default
is 60 minutes. Set to
OFFto not use time interval to influence media imaging. - IMGLOGLN
- Specifies the target amount of log written after which media images are taken. Specify a value
in number of megabytes, Set to
OFFto not use amount of log written to influence media imaging. The default isOFF.
- IMGRCOVO
- Use this attribute to specify which types of object are recoverable. Set this attribute to
YESto take media images of the authentication information, channel, client connection, listener, namelist, process, alias queue, remote queue, and service objects. - IMGRCOVQ
- Use this attribute to set the default for local and PERMADYN queue types. Set to
YESto take media images,NOotherwise.