The restart log file (the WA-LOG file) is a further DBH-specific backup file that serves to control a restart. It contains the following information:
DBH options
information on consistency points
physical before images
information on the progress of the restart
information on openUTM synchronization.
The WA-LOG file uses the following standard name:
DBH variant | Standard name | Link name |
independent DBH | SESAMcn.WA-LOG | WALOG |
linked-in DBH | SESLKcn.WA-LOG | WALOG |
Table 54: Standard name for the WA-LOG file
When the utility function RECOVER is used, the file SESLKcnst.WA-LOG is also created.
The DBH creates a WA-LOG file for each DBH session with transaction logging. A WA-LOG file is not created only if the system uses the appropriate DBH option to disable transaction logging. Storage information pertaining to the TA-LOG files is stored in the DBH's media catalog.
Additional information on naming conventions, the default assignment and the access method associated with the WA-LOG files is provided in the table “DBH-specific files”.