RCVOPT parameter
Recovery options
Summary
- Default value
- 0
- Parameter type
- System
- Where set
- On User 0's parameter line
- Related products
- All
- Introduced
- Model 204 V6.1 or earlier
Description
The recovery options
Valid settings of RCVOPT are (options can be summed):
| Setting | Meaning |
|---|---|
| X'01' | Checkpoints are taken. |
| X'08' | Roll forward information is logged into the journal stream. |
| X'20' | Do not flush the dirty pages in a file that does not do pre-imaging (FRCVOPT X'20' set) during a subtransation checkpoint. This bit only has an effect in Model 204 7.6 and later. One use of this setting would be to set FRCVOPT X'20' in a file used to hold SirFact dumps which can get quite large. This would prevent a large SirFact dump from causing a subtransaction checkpoint to take a very long time. While this could result in a SirFact dump being lost if the system crashes, this is probably not that big a deal so the risk is probably well worth the benefit of faster subtransaction checkpoints. |