COMMIT_WRITE

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Property	Description
Parameter type	String
Syntax	COMMIT_WRITE = '{IMMEDIATE | BATCH},{WAIT |NOWAIT}'
Default value	If this parameter is not explicitly specified, then database commit behavior defaults to writing commit records to disk before control is returned to the client. If only IMMEDIATE or BATCH is specified, but not WAIT or NOWAIT, then WAIT mode is assumed. If only WAIT or NOWAIT is specified, but not IMMEDIATE or BATCH, then IMMEDIATE mode is assumed.
Modifiable	Yes (at both session-level and system-level). Values supplied for COMMIT_WRITE in an ALTER SYSTEM or ALTER SESSION statement must be separated by a comma.
Range of values	Single-quoted, comma-separated list of either IMMEDIATE or BATCH, and either WAIT or NOWAIT.
Basic	No
Real Application Clusters	Each instance may have its own setting

COMMIT_WRITE is an advanced parameter used to control how redo for transaction commits is written to the redo logs. The IMMEDIATE and BATCH options control how redo is batched by Log Writer. The WAIT and NOWAIT options control when the redo for a commit is flushed to the redo logs.

Note:

1. The COMMIT_WRITE parameter is deprecated. It is retained for backward compatibility only. It is replaced by the COMMIT_LOGGING and COMMIT_WAIT parameters.

2. Query for the current value of the parameter

select name, value, isdefault, isses_modifiable, issys_modifiable,

isinstance_modifiable, isdeprecated, description

from v$parameter where upper(name) = 'COMMIT_WRITE';

NAME	VALUE	IS DEFAULT	ISSES_ MODIFIABLE	ISSYS_ MODIFIABLE	ISINSTANCE_ MODIFIABLE	IS DEPRECATED	DESCRIPTION
commit_write		TRUE	TRUE	IMMEDIATE	TRUE	FALSE	transaction commit log write behaviour

Oracle initializatoin parameters