NetBase for MPE Reference Guide

NetBase Shadowing
5-37
To backup files:
1. Run NBCTRL and enter the STOP POST command on the system where the shadow files reside.
The import process will start queuing updates to the shadow files.
2. Store the shadow files to tape.
3. Run NBCTRL and enter the START POST command. This will restart the posting process.
When the START POST command is issued, NetBase restarts all the posting processes (one
process per import node). Posting automatically resumes for all files that were queued while
posting was down.
Note. If it is important that the backup reflect the state of the files as of a certain
point in time (after online activity is completed, but before batch processing begins),
the NBFLUSH utility can be used to generate a checkpoint. This checkpoint can be
used to establish a point in time prior to which all transactions have been posted to
the shadow files. The NBFLUSH utility is described in the “Flushing Shadow
Updates” section.