Have you run the RCLSTG over the same file ?
If this is the first time on this file, it may be due to the size. The error message looks like you
may have hit a limitation.
Message . . . . : Automatic storage overflow.
Cause . . . . . : One of the automatic storage stacks &1 for the thread has
overflowed or a storage access beyond the maximum size of a teraspace
automatic storage stack was attempted. Further program execution within the
thread is not possible. Automatic storage stack values and their meanings
1 — System stack in single level storage.
2 — User stack in single level storage.
3 — System stack in teraspace.
4 — User stack in teraspace.
Technical description . . . . . . . . : Attempt to reduce the automatic
storage used by programs running in the thread.