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Question:A latch is defines as:
a. Â Â Â Â Â Â Â A mechanism used by the Oracle optimizer to run user queries in parallel
b. Â Â Â Â Â Â Â A mechanism to prevent data files that make up the database from auto-extending
d. Â Â Â Â Â Â Â A mechanism used by the background process PMON for cleaning up the caches and freeing up resources the user processes were using
A low-level serialization mechanism to protect shared data structures in the system global area
Sep 13, 2013
Sep 12, 2013
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