RedoParallelism
The RedoParallelism attribute controls the degree of
parallelism. It means how many RedoTracks (threads) TimesTen uses to process redo
logs.
This attribute takes effect only when you enable EnableParallelRedo
(see EnableParallelRedo).
The values range from 1 to
64 and the default value is
4. If you set
RedoParallelism to 2, it
means two redo threads (RedoTracks) process redo records within each
segment concurrently (see RedoSegmentSize). Set RedoParallelism=1 to
run the parallel redo algorithm in serial mode. The higher the
value, the more CPU threads are utilized for recovery.
For details on how to configure this attribute, see Parallel Redo Recovery in TimesTen Database in the Oracle TimesTen In-Memory Database Operations Guide.
Required Privilege
Only the instance administrator can change the value of this attribute.
Setting
Set RedoParallelism as follows:
| Where to set the attribute | How the attribute is represented | Setting |
|---|---|---|
|
C or Java programs or UNIX and Linux systems |
|
|
|
Windows ODBC Data Source Administrator |
Not applicable |
Not applicable |