Enterprise Edition Home | Express Edition Home | Previous Page | Next Page   Effect of Configuration on I/O Activity > Table I/O >

Unavailable Data

Another aspect of table I/O has to do with situations in which a query requests access to a table or fragment in a dbspace that is temporarily unavailable. When the database server determines that a dbspace is unavailable as the result of a disk failure, queries directed to that dbspace fail by default. The database server allows you to specify dbspaces that, when unavailable, can be skipped by queries, as described in DATASKIP.

Warning:
If a dbspace containing data that a query requests is listed in DATASKIP and is currently unavailable because of a disk failure, the data that the database server returns to the query can be inconsistent with the actual contents of the database.
Enterprise Edition Home | Express Edition Home | [ Top of Page | Previous Page | Next Page | Contents | Index ]