Setting Redo Transport Mode in True Cache
Set redo transport mode to control how the primary database sends redo data to True Cache.
You can’t configure redo transport mode with Database Configuration Assistant (DBCA). To set the redo transport mode, update the TRUE_CACHE_CONFIG initialization parameter on True Cache.
Use the following syntax on True Cache:
ALTER SYSTEM SET TRUE_CACHE_CONFIG='redo_transport={sync | async}' APPEND SCOPE=SPFILE;True Cache supports the following redo transport modes:
-
async: This is the default. In this mode, the primary database doesn’t wait for True Cache to receive the redo data before the commits complete. -
sync: In this mode, the primary database waits for confirmation that True Cache has received the redo data before the commits complete. This mode can reduce redo transport lag to True Cache, but commits can take longer because the primary database waits for True Cache to confirm receipt.
The TRUE_CACHE_CONFIG initialization parameter is static. Restart True Cache for the redo transport mode change to take effect.