Data Exchange creates a number of files that provide diagnostic information for the various functions that are performed. These file can be of value to Unisys Support when submitting UCFs.
Each of the Data Exchange host runstreams create three run-related files, namely, Log, Brkpt, and Diag. All the files have the same qualifier with the format DEXCH$server, where server is the Director name. For example, DEXCH$D5159E.
The Director creates new file cycles of DIAG$, LOG$, and BRKPT$.
Each Agent creates new file cycles of DIAG$AGnn$m, LOG$AGnn$m, and BRKPT$AGnn$m , where nn is the Application Group number and m is an instance number.
Note: When the breakpoint file BRKPT$AGnn$m is still open in the OS 2200 Agent, it does not have an end-of-file marker. If you try to transfer the file using FTP when it is open, it may contain garbage data from the disk where it is stored. To prevent this, you must comment the line (@free, r agentbrkpt.) in the OS 2200 Agent runstream DEXAGENTRUN as follows:
@asg,UP agentbrkpt. @. free,r agentbrkpt. @brkpt print$/agentbrkpt
After commenting this line, if you try to transfer the breakpoint file using FTP, you will receive an error stating that the file is busy. Note that after making this change, you can access the breakpoint file only after the OS 2200 Agent terminates and makes the file free.
Each Schema Extractor creates new file cycles of DIAG$SXnn$m, LOG$SXnn$m,and BRKPT$SXnn$m where nn is the Application Group number and m is an instance number.
Each Data Extractor creates new file cycles of DIAG$DXnn$m, LOG$DXnn$m, and BRKPT$DXnn$m where nn is the Application Group number and m is an instance number.
Parameter passing files which are short-lived catalogued files, are created by the Director to pass request-specific information to the common run streams. Once a started run has read the parameter information from the file, it deletes the file since the file is no longer useful. The format of parameter file names is DATAEXCH$P*ttnnnn (where tt is a string that varies with the run-type (DX for Data extracts, SX for Schema extracts, and AG for Agent runs) and nnnn is the 4 octal digit number passed to the run stream).
Data Exchange also creates other files when performing bulk extractions. Do not delete these files unless you have completed bulk transformation loads. The extraction files have qualifiers "DATAEXCH$R" (raw extract files) and "DATAEXCH$F" (formatted extract files).
As part of the extraction process, Data Exchange creates a file containing the state of the extraction. The name of this file is sourced from Administrative service. The name of this file is unique and resembles “dc0bda11*707c48edafaa". Do not delete these files unless you have completed your bulk transformation loads.