Format Start

Advanced Topics › Product Activation Considerations › Format Start

Format Start

On a format start, CA MIM will erase any existing information within the control or checkpoint file and revert to using defaults and settings provided by your initialization parameter members. Depending on your configuration, you may need to format the control file, the checkpoint file, or both.

Format only the control file if the following are true:

You have specified DASDONLY or CTCDASD as the initial communications method
You are not using the ECMF REQUEUE feature

To perform a format start when checkpoint files are not present:

Stop CA MIM on all systems in the MIMplex by issuing the following command:
```
@SHUTDOWN,GLOBAL
```
Start CA MIM on the first system by issuing the following command:
```
S MIMGR,FORMAT=CF
```
Start CA MIM on all other systems normally by issuing the following command on each system:
```
S MIMGR
```

Format both the control file and the checkpoint file if the following are true:

You have specified DASDONLY or CTCDASD as the initial communications method and you are using the ECMF REQUEUE feature. The ECMF REQUEUE feature requires checkpoint files.
You have specified XCF or CTCONLY as the initial communications method.

To perform a format start when checkpoint files are required:

Stop CA MIM on all systems in the MIMplex by issuing the following command:
```
@SHUTDOWN,GLOBAL
```
Start CA MIM on the first system by issuing the following command:
```
S MIMGR,FORMAT=BOTH
```
Start CA MIM on all other systems normally by issuing the following command on each system:
```
S MIMGR,FORMAT=CKPT
```

Note: When starting with XCF or CTCONLY as the initial communications method, the following message is displayed when the VCF is formatted:

MIM0359 VCF FORMAT COMPLETE - MIM CAN BE STARTED ON OTHER SYSTEMS