Use this command to change the lock residency of a module from a
concurrency filter lock facility (CFLF) locking control unit (CU) to a
coupling facility (CF) , or from a CF to a CFLF locking CU.
Requirements and Restrictions
- At least one CF must be added to the CF locking configuration by using the
ZCFLK ADD command before entering this command.
- If you are migrating an online module, the duplicate module is also
migrated to ensure that the locks for a given module reside on only a CFLF
locking CU or a CF.
- The range of module numbers specified (either one module number or
multiple module numbers) must be real-time symbolic module numbers for the
subsystem from which you enter this command. The range
begins with the first module number specified and continues
consecutively.
- You cannot specify general file (GF) relative module numbers because locks
do not exist for a GF module.
- If you were running on a TPF system without locking in forced uniprocessor
mode before issuing the ZCFLK MIGRATE command to migrate to CF record lock
support, you must perform an initial program load (IPL) of the TPF system in
order to use locking.
Format
- modnum
- is the 1- to 4-digit symbolic module number.
- modnum.modnum
- specifies a range of module numbers for which the corresponding locking
facilities are migrated. The range begins with the first
module number specified and continues consecutively.
- ONLine
- specifies that the lock residency for all online modules is directed to a
CFLF locking CU or a CF.
- GDS
- specifies that the lock residency for general data set (GDS) modules is
directed to a CFLF locking CU or a CF.
- CF
- specifies that the lock residency for the specified module is directed to
a CF.
- CU
- specifies that the lock residency for the specified module is migrated to
a CFLF locking CU.
Additional Information
Online help information is available for this command. To display
the help information, enter one of the following:
ZCFLK HELP
ZCFLK ?
Examples
The following example shows the migration of lock residency for a range of
modules (047 to 04A) to a CF.
+--------------------------------------------------------------------------------+
|User: ZCFLK MIGRATE 047.04A TO CF |
| |
|System: CFLK0004I 23.56.00 CFLW - ZCFLK MIGRATE PROCESSING COMPLETE |
+--------------------------------------------------------------------------------+
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