This utility extracts data records from CADisk archive volumes. It is normally used to recover data for a data set on damaged archive tapes. It scans the archive tape volume for the specified data set, and then copies the data records or blocks to a sequential data set. For sequential data sets, the output data set is the same format as before it was archived. It can be used directly by application programs. For other data set organizations, the extracted data must be processed by other utilities to reload and recreate the original data set.
This program actually functions as a user exit through the archive analysis utility. the program reviews logical records from the archives, and writes the selected ones to an output sequential file. The user provides the output sequential file to be written. It must contain proper DCB attributes for the data set to be extracted. Partitioned data sets cannot be recovered by this utility. Only one data set can be extracted for each execution of the utility. This program places in the output file data that can most easily be processed by the user. In many cases, the data will be input to a reload utility to actually recover the data into a usable format.
Note: When CADisk encounters data sets with records longer than 32,760 bytes, those records will be split up into records of 32,760 bytes, and messages 2961 issued to let you know this occurred.
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