| Property | Description |
|---|---|
| Parameter type | Boolean |
| Default value | true |
| Modifiable | No |
| Range of values | true | false |
TAPE_ASYNCH_IO controls whether I/O to sequential devices (for example, backup or restore of Oracle data to or from tape) is asynchronous—that is, whether parallel server processes can overlap I/O requests with CPU processing during table scans. If your platform supports asynchronous I/O to sequential devices, Oracle recommends that you leave this parameter set to its default. However, if the asynchronous I/O implementation is not stable, you can set TAPE_ASYNCH_IO to false to disable asynchronous I/O. If your platform does not support asynchronous I/O to sequential devices, this parameter has no effect.
See Also:
Oracle Database Performance Tuning Guide for more information on asynchronous I/O and on setting this parameter