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Oracle® Database Reference
11g Release 2 (11.2)

E40402-12
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READ_ONLY_OPEN_DELAYED

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.

Values:

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