The DMCL used in the unload and reload operations must include the segment whose areas are being unloaded.
The UNLOAD utility must establish access to DMCLs for the unloading of the original database and for determining the page ranges of the database areas to be used by the subsequent RELOAD utility. The DMCL(s) to be used by each step of the process is determined as follows.
Unloading the original database
The unload operation will use the DMCL specified in the SYSIDMS file for the UNLOAD utility jobstep. If no DMCL is specified in the SYSIDMS file, the DMCL named IDMSDMCL will be used.
Reloading the new database
The DMCL specified in the RELOAD clause of the UNLOAD utility parameter will be used. If a DMCL is not specified, the DMCL to be used by the UNLOAD operation will be used to determine record placement in the new DMCL and is passed on to the RELOAD utility.
If the area definitions between the original database and the reload database are different, the unload and reload DMCLs must have different names, or the area definition must reside in different segments within the same DMCL.
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