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Oracle® Database Reference
11g Release 1 (11.1)

Part Number B28320-01
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Property Description
Parameter type Boolean
Default value false
Modifiable No
Range of values true | false

READ_ONLY_OPEN_DELAYED determines when datafiles in read-only tablespaces are accessed.


You can use this parameter to speed up some operations (primarily opening the database) for very large databases when substantial portions of the database are stored in read-only tablespaces. Consider setting this parameter to true for such databases, especially if portions of the read-only data are stored on slow-access devices or hierarchical storage.

See Also:

Oracle Database Administrator's Guide for information on the consequences of delaying access of datafiles in read-only tablespaces