CKPT.MODE = (RECORD | BLOCK BLOCK | RECORD PDS | NOPDS NOPDS | PDS VSAM | NOVSAM VSAM | NOVSAM)
This parameter enables you to control checkpointing in both record and block level transfers.
Note: This parameter does not apply to TCP/IP or LU6.2 connections.
See Process Queuing and Recovery for an explanation of when checkpointing
occurs.
Subparameter | Description |
---|---|
RECORD | BLOCK | Refers to transferring physical sequential (PS) files. It determines whether checkpointing is allowed when the CKPT parameter is specified on the COPY statement. If a record level transfer is taking place, BLOCK does not allow record level checkpointing, even if you have coded the request on the COPY statement. If you are performing a block level transfer, BLOCK enables checkpointing requests coded on the COPY statement. RECORD enables record level checkpointing. |
BLOCK | RECORD | Refers to transferring PS files. It determines what type of checkpointing occurs when automatic checkpointing is in effect. You enable automatic checkpointing by specifying a value in the CKPT parameter in the initialization parameters. If you use the CKPT parameter, you do not have to request checkpointing on each COPY statement. If you specify RECORD for this parameter, both record level and block level automatic checkpointing occur, depending on the mode of transfer for each copy. Use BLOCK to prevent automatic checkpointing on a record level transfer. |
PDS | NOPDS | Refers to transferring partition data sets (PDS). Because checkpointing information is sent with each member of a PDS, this subparameter specifies whether checkpointing is allowed with PDS transmission if a request is coded on the COPY statement. NOPDS prevents checkpointing on the PDS, even if you requested it on the Copy statement. PDS enables PDS transmissions to be checkpointed. |
NOPDS | PDS | Refers to transferring PDS. It determines what type of checkpointing occurs when automatic checkpointing is in effect. To enable automatic checkpointing, specify a value in the CKPT parameter in the initialization parameters. If you use the CKPT parameter, you do not have to request checkpointing on each COPY statement. If you specify PDS, all PDS transmissions are automatically checkpointed. NOPDS prevents automatic checkpointing of PDS transmission. |
VSAM | NOVSAM | Specifies whether checkpointing takes place for VSAM files when the checkpoint parameter is specified in the COPY statement. |
VSAM | NOVSAM | Specifies whether automatic checkpointing takes place for VSAM files. |
Modifiable through MODIFY INITPARMS command: YES