June 2018
Intermediate to advanced
478 pages
10h 52m
English
Content preview from IBM Db2 11.1 Certification Guide
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Monitoring locks
Lock monitoring focuses on providing information about lock-wait and deadlock performance problems in a database. In Db2 v11.1, we can also monitor latching at the memory structure level. The following table shows the difference between Lock and Latches in Db2:
|
Lock |
Latch |
|
Protects transactional data consistency. |
Lightweight synchronization object that protects the data consistency at an internal data structure in memory such as a buffer pool. |
|
Locks are applied based on different isolation levels:
Lock statuses are: G (granted), W (waiting), and C (converting state). |
Latches being applied at the EDU (Engine Dis-patchable ... |
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