This event occurs while the session is writing physical blocks to all control files. This happens when:
- The session starts a control file transaction (to ensure the control files are up to date in case the session crashes before committing the control file transaction)
- The session commits a transaction to a control file
- Changing a generic entry in the control file, the new value is being written to all control files
Wait Time: The wait time is the time it takes to finish all writes to all control files
| Parameter | Description |
|---|---|
| files | The number of control files to which the session is writing |
| blocks | The number of blocks that the session is writing to the control file |
| requests | The number of I/O requests which the session wants to write |
Oracle Database Internal Mechanism 