Name
GC_FILES_TO_LOCKS
Synopsis
Value: see description
Parallel Server parameter that controls the mapping of Parallel Cache Management (PCM) locks to datafiles. The parameter can be used to limit the number of locks used per datafile and also to specify that each lock should cover a set of contiguous blocks. If this parameter is specified, Oracle will disable the Cache Fusion processing feature of Oracle9i Real Application Clusters. Multiple instances must have identical values.
Syntax
GC_FILES_TO_LOCKS = '{file_list=lock_count[!blocks][EACH]}[:]...'Keywords
- file_list
One or more datafiles listed by their file numbers, or ranges of file numbers, with comma separators
- lock_count
The number of PCM locks assigned to file_list. If lock_count is set to 0, then fine-grained locking is used for these files.
- !blocks
Optionally indicates the number of contiguous blocks covered by one lock.
- EACH
Optionally specifies that each datafile in file_list is assigned a separate set of lock_count PCM locks; the default is noncontiguous blocks.
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