Use the EXTRACT function when you intend to process table information for use with the CA Datacom Datadictionary Record Migration Facility utility (DDRMFLM) in fixed-block format or for use outside the CA Datacom environment. To back up a table in compressed form, you must use the BACKUP function for the entire data area that contains the table.
In Simplify mode, the function expects MUF to be enabled. This provides control and protection. If MUF is not enabled, this function should wait for MUF to enable. If you are required to execute the function without MUF enabled, for example if it is needed to allow restart to execute, the function must either follow a function that can only run with MUF not enabled or follow a function to acknowledge MUF is not enabled with SET OPTION1=MUF_NOT_ENABLED. It is possible (but not recommended) to use SET OPTION1=MUF_ENABLED_OR_DISABLED. The function without MULTUSE=YES and MUF enabled does not require or want the database to be closed, but there must be no open URT for any table in the base, except that SEQ=PHYSICAL allows URT entries.
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