FILESYSTEMIO_OPTIONS

[출처] Oracle database Documentation Library 10g Release 2 (10.2)

FILESYSTEMIO_OPTIONS Initialization Parameter

You can use the FILESYSTEMIO_OPTIONS initialization parameter to enable or disable asynchronous I/O or direct I/O on file system files. This parameter is platform-specific and has a default value that is best for a particular platform. It can be dynamically changed to update the default setting.

FILESYTEMIO_OPTIONS can be set to one of the following values:

• ASYNCH: enable asynchronous I/O on file system files, which has no timing requirement for transmission.

• DIRECTIO: enable direct I/O on file system files, which bypasses the buffer cache.

• SETALL: enable both asynchronous and direct I/O on file system files.

• NONE: disable both asynchronous and direct I/O on file system files.

FILESYSTEMIO_OPTIONS

Property	Description
Parameter type	String
Syntax	FILESYSTEMIO_OPTIONS = { none | setall | directIO | asynch }
Default value	There is no default value.
Modifiable	No
Basic	No

FILESYSTEMIO_OPTIONS specifies I/O operations for file system files.