NetBase for MPE Reference Guide

Chapter 5
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In all cases, when NBFLUSH completes, it sets a JCW named NBFLUSH. If the value of NBFLUSH is
other than zero, an error has occurred. The possible values for NBFLUSH and their meaning are
shown in the following table.
Value Description
0
Successful, no errors. If a wait option was specified, the task is complete on the
shadow system.
1
NetBase is not running.
2
NetBase log control process is not running.
3
The NetBase log process is not running.
4
The shadow export process is not running.
5
The link to the remote computer is not active.
6
The posting process is not running on the remote node.
7
Unable to retrieve log file information.
Backups Using Shadow Data
NetBase Shadowing provides a flexible and easy system for doing backups without shutting down
access to files or databases on the master system. Backups can be made of the shadow copies of files
without interrupting access to the original files. All that needs to be done is to stop one of the
processes that transfer updates between the original files and the shadow files. Since NetBase
queues all updates to the files while the process is down, updates made while the files are being
backed up are not lost.
Whether the shadow copies reside on the same machine as the original copies, or whether files in
the network are shadowed to a remote system, the steps are the same. Use the following steps for
backing up files with NetBase Shadowing