Problem:

With the UNIX command rm, you can delete a file that is used by a Micro Focus COBOL application. How can you verify the use of the data file before removing it?

Resolution:

The first solution is to create a script file with the Micro Focus wholock. The Micro Focus wholock command is put in $COBDIR/bin . This command displays the process that use the data file. The syntax is as follows:

$COBDIR/bin/wholock {name file}

Example :

$COBDIR/bin/wholock /home/user1/data/FIC1 displays :

Process 1232 (prog) on tty pts/2 holds 1 read and 1 write locks

An example of the script file ( wholock.sh ) is attached.

The second solution is to create a Language C program that verify the lock of the file and delete the file if it is possible. The Language C program is attached.

cc –o rmmf rmmf.c

rmmf { list of the data files}