VSAM options

If you want to process snapshots for VSAM data sources, you must specify options on the VSAM Options panel.

Related topic

Restrict caching	Specify whether to restrict caching for cross-region share options 3 or 4: _______________________ Valid values are 1 (Yes) or 2 (No). The default value is 1 (Yes). If you specify Yes, XBM does not cache objects that are defined to allow cross-system updates. VSAM objects with the following share options can be cached: (1,3) (1,4) (2,3) (2,4) VSAM objects with other share options that XBM can determine to be on nonshared DASD If you specify No, you allow XBM to cache VSAM objects that can be shared across systems. To allow caching, both this option and the specific managed object must be set to RESTRICT=NO. Warning BMC does not recommend caching any data sets that are shared by multiple systems. If data sets are updated by multiple systems while cached with XBM, it could result in a data-integrity problem. This VSAM option allows you to cache data sets with shareable attributes (share options 3 or 4) when the data set is not really shared across systems. If a data set with share options 3 or 4 is accessed with DISP=OLD, XBM allows caching.
Remove object information	Specify whether to remove VSAM object tracking information while not in use: _______________________ Valid values are 1 (Yes) or 2 (No). The default value is 1 (Yes). If you specify Yes, the object tracking information for VSAM objects is removed after the objects are no longer being used, unless the VSAM object has been defined under a management set with RETAIN=YES. If you specify No, the information is not removed and memory usage in the XBM address space might be increased.

Restrict caching

Specify whether to restrict caching for cross-region share options 3 or 4: _______________________

Valid values are 1 (Yes) or 2 (No). The default value is 1 (Yes).
If you specify Yes, XBM does not cache objects that are defined to allow cross-system updates. VSAM objects with the following share options can be cached:
- (1,3)
- (1,4)
- (2,3)
- (2,4)
- VSAM objects with other share options that XBM can determine to be on nonshared DASD
If you specify No, you allow XBM to cache VSAM objects that can be shared across systems. To allow caching, both this option and the specific managed object must be set to RESTRICT=NO.

Warning

BMC does not recommend caching any data sets that are shared by multiple systems. If data sets are updated by multiple systems while cached with XBM, it could result in a data-integrity problem. This VSAM option allows you to cache data sets with shareable attributes (share options 3 or 4) when the data set is not really shared across systems. If a data set with share options 3 or 4 is accessed with DISP=OLD, XBM allows caching.

Remove object information

Specify whether to remove VSAM object tracking information while not in use: _______________________

Valid values are 1 (Yes) or 2 (No). The default value is 1 (Yes).
If you specify Yes, the object tracking information for VSAM objects is removed after the objects are no longer being used, unless the VSAM object has been defined under a management set with RETAIN=YES.
If you specify No, the information is not removed and memory usage in the XBM address space might be increased.

VSAM options

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