The DIRCONV statement MERGE-DIRECTORIES (see "MERGE-DIRECTORIES Merging directory files") can be used to merge multiple directory files into a single new directory file. This new directory file will contain all the information necessary to recreate, retrieve and recall files that were saved under one of the original directory files. With this new directory file you can continue to carry out backup, archival and migration. However, version backup directories cannot be merged.
During the merge process name conflicts may occur:
If you enter
SILENT-RUN=*NO, processing is interrupted and an error report is output to SYSOUT if a name conflict occurs.If you enter
SILENT-RUN=*YES, DIRCONV checks the complete input directory for name conflicts and outputs these in a list.
The MAREN catalog is not updated automatically. The name of the directory file is not changed in the volume entries that belong to the original directory file. Therefore, you must use the UPDATE-VOLUME-CATALOG statement (see "UPDATE-VOLUME-CATALOG Updating the volume catalog") during a successful merge process in order to obtain consistency.
Note
For the opposite function, i.e. splitting a directory file into multiple files, is not possible.