Problem with the indicator parallel optimizer

Hello

We are working on Oracle 11 g (11.2.0.1.0).

Result of the query happens if we use the optimizer indicator. It sounds funny. According to the Oracle documentation, indicator optimizer needs only the performance impact.

If we use the parallel indicator (for example, / * + parallel (6) * /), then we are able to go read the hint in parallel records and if we do not, then we get no line.

An early response would be sincerely appreciated.

Thank you and best regards,

Satya Acharya.

It could be a bug of "bad results" by an index (which can be used in non parallel execution plan).  You can try to ALTER INDEX index-name STRUCTURE ENTER and ALTER INDEX index-name VALIDATE STRUCTURE CASCADE.  If the Index is corrupted, you will have to drop and CREATE the index (a simple ALTER INDEX REBUILD indexname cannot solve the problem)

Hemant K Collette

Tags: Database

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