The OPTIMIZE parameter is used in conjunction with the SAVECOMP parameter to control the number of tracks read at one time by DFSMSdss when processing hardware compressed files. OPTIMIZE is valid only if SAVECOMP is also specified. If specified, OPTIMIZE must immediately follow the SAVECOMP parameter.
Syntax
►►─┬──────────────┬───────────────────────────────────────────────────────────►◄ └─ OPTIMIZE=n ─┘
Where n can be:
Read 1 track at a time
Read 2 tracks at a time
Read 5 tracks at a time
Read 1 cylinder at a time
The default is 1. The GVPARMS utility can be used to set it to a different value. Specifying OPTIMIZE 2, 3, or 4 reduces the time for an EXPORT but uses more real and virtual storage. It also keeps the channel busy for longer blocks of time.
|
Copyright © 2011 CA.
All rights reserved.
|
|