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Database Administration
Maintaining and Monitoring Your Database : Managing Performance : Operating system resources : File descriptors
 
File descriptors
A file descriptor is an identifier assigned to a file when it is opened. There is a system limit on the number of file descriptors. If you have insufficient file descriptors, you might not be able to start a broker or connect a new client to an existing broker. See OpenEdge RDBMS Limits for details on calculating the number of file descriptors required.