Messages that are returned during offloading

During the offload process, Db2 sends a series of messages to the z/OS console. Most of these messages include information about the RBA ranges in the various log data sets.

The following message appears during Db2 initialization when the current active log data set is found, and after a data set switch. During initialization, the STARTRBA value in the message does not refer to the beginning of the data set, but to the position in the log where logging is to begin.
```
DSNJ001I - csect-name CURRENT COPY n ACTIVE LOG DATA SET IS
           DSNAME=...,  STARTRBA=..., ENDRBA=...
```

The following message appears when an active data set is full:

DSNJ002I - FULL ACTIVE LOG DATA SET DSNAME=...,
           STARTRBA=..., ENDRBA=...

One of the following message appears when offload reaches end-of-volume or end-of-data-set in an archive log data set:

The non-data sharing version of this message is:

DSNJ003I - FULL ARCHIVE LOG VOLUME DSNAME=..., STARTRBA=..., ENDRBA=...,
           STARTTIME=..., ENDTIME=..., UNIT=..., COPYnVOL=...,
           VOLSPAN=..., CATLG=...

The data sharing version of this message is:

DSNJ003I - FULL ARCHIVE LOG VOLUME DSNAME=..., STARTRBA=..., ENDRBA=...,
           STARTLRSN=..., ENDLRSN=..., UNIT=..., COPYnVOL=...,
           VOLSPAN=..., CATLG=...

The following message appears when one data set of the next pair of active logs is not available because of a delay in offloading, and logging continues on one copy only:
```
DSNJ004I - ACTIVE LOG COPY n INACTIVE, LOG IN SINGLE MODE,
           ENDRBA=...
```
The following message appears when dual active logging resumes after logging has been performed on one copy only:
```
DSNJ005I - ACTIVE LOG COPY n IS ACTIVE, LOG IN DUAL MODE,
           STARTRBA=...
```
The following message indicates that the offload task has ended:
```
DSNJ139I LOG OFFLOAD TASK ENDED
```