X186: Maximum number of open files exceeded.

The system cannot process the current command because it is unable to open another file. You may need to close some queries, remove some indices from your table, or change the limit on the number of concurrently open files. In DOS, the number of files that can be concurrently opened by the system is specified in your computer's CONFIG.SYS file, as described in your Installation documentation.
Restriction: This topic applies to Windows environments only.