Direct file (DIRFIL)

 

i5/OS^® DDM supports access to nonkeyed physical files via the DDM direct file model.

The support has the following characteristics:

• Delete Capabilities: An iSeries™ direct file is delete capable or nondelete capable. A nondelete capable file must have an active default record.

• Supported Record Classes: An iSeries direct file can have a fixed-length record (RECFIX) or variable-length record (RECVAR) for storage. Once a non-iSeries source server opens a file on the iSeries target using variable-length record access, the iSeries target continues to send and receive variable-length records on all subsequent I/O operations.

  The iSeries server does not support the concept of a direct file. i5/OS DDM creates a direct file by creating a nonkeyed physical file and initializing it, with deleted or active default records, to the maximum size requested. No extensions to the file are allowed.

 

Parent topic:

Supported DDM file models