CA reclaim is disabled at the system level by default. To enable CA reclaim at the system level, use the IGDSMSxx member of PARMLIB or the SETSMS command. Then, to enable or disable CA reclaim for data sets when they are defined, you can use a CA reclaim attribute in the data class, which you set with ISMF. The attribute is set to Yes, to enable CA reclaim, by default. To disable or enable CA reclaim for individual data sets, use the IDCAMS ALTER command. For a summary, see Table 1.
Control for... | Use... | Default |
---|---|---|
System | PARMLIB member IGDSMSxx or SETSMS command | Disabled |
Existing data sets | - | Enabled, once CA reclaim is enabled for the system |
New data sets created in a data class | ISMF, to set the CA reclaim attribute for the data class | Yes (enabled), but the attribute is ignored if CA reclaim is not enabled at the system level |
Individual data sets | IDCAMS ALTER | - |