December 2002
Intermediate to advanced
928 pages
85h 29m
English
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Name
GC_ROLLBACK_LOCKS
Synopsis
Value: 1 - unlimited
Default: 20
Specifies, for each rollback segment, the number of distributed locks available for simultaneously modified rollback segment blocks for Parallel Server. The default is adequate for most applications. Each instance must have identical values. Obsolete with Oracle9i.
Syntax
GC_ROLLBACK_LOCKS = 'rs_list=lock_count[!blocks][R][EACH][:...]'
Keywords
- rs_list
One or more rollback segments listed by their segment numbers, or ranges of segment numbers, with comma separators.
- lock_count
Number of PCM locks assigned to rs_list.
- ! blocks
Number of contiguous blocks covered by one lock. The default is noncontiguous blocks.
- R
Indicates that these locks are releasable and are drawn as needed from the pool of releasable locks.
- EACH
Indicates that each rollback segment in rs_list is assigned a separate set of lock_count PCM locks.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.