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Upgrade Guide for DB2 UDB for z/OS > Upgrading a Database from the Mainframe > Preparing the z/OS Host Environment >
Customizing the JCL UNIT Parameter Value
If appropriate for your environment, you can amend the UNIT=SYSDA parameter setting for all of the JCL generated for the Siebel upgrade before you run any jobs on the mainframe. The UNIT=SYSDA parameter can be amended in each of the following data sets.
- job0.txt: dynamically allocated data sets
- vstg0007: install.lib jcl allocation
- vstg0016: install.jcl pds data sets allocations
- vstg0200: pretedit jcl
- vstg0020: proclib
To amend the UNIT parameter setting
- Navigate to the data set you want to amend. Make a backup copy of the data set.
- Go to Edit mode on the data set.
- To change the UNIT=SYSDA parameter, enter the following command on the command line:
c sysda sgunit all
where sgunit is the unit name you want to specify.
- Press PF3 to save your changes.
All the JCL generated by the data set will use the new value you specified.
NOTE: If you want to revert to the default UNIT parameter settings, either restore the backup copy of the data set you made in Step 1 or transfer the staging data sets from the midtier again.
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