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Determining the Number of Lock Entries z/OS MVS Programming: Sysplex Services Guide SA23-1400-00 |
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Use the LOCKENTRIES parameter to specify the number of entries in the lock structure. This value determines the number of available ‘slots’ in a structure's lock table, to which a specific resource is mapped by a hashing algorithm. The value of LOCKENTRIES is rounded up to a power of 2, if it is not already specified as such. If you define the lock structure to have no record data associated with it (RECORD=NO), you can request that the system is to attempt to obtain the largest possible number of locks for the allocated size of the structure by specifying LOCKENTRIES=0. The system returns the number of lock entries actually allocated in the IXLYCONA answer area, field CONALOCKENTRIES. A value of 0 for a lock structure with record data is not valid and the request fails with reason code IXLRSNCODENOLENTRIES. |
Copyright IBM Corporation 1990, 2014
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