June 2018
Intermediate to advanced
478 pages
10h 52m
English
Content preview from IBM Db2 11.1 Certification Guide
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Self-Tuning Memory Manager (STMM)
The following database memory-related configuration parameters are tuned automatically when the STMM future is enabled via the self_tuning_mem database configuration parameter:
- database_memory: This parameter specifies the amount of shared memory that is reserved for the database shared memory region. When you set this parameter to AUTOMATIC, the initial memory requirement is calculated based on the underlying configuration settings:
- Buffer pools: Amount of memory allocated to cache a table's index and data pages, as they are read from the disk, to be selected or modified.
- dbheap: Amount of memory used to fulfil the global database memory requirements.
- locklist: Amount of memory allocated to store the lock ...
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