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5 Database Administration Database Interface Process
UCS 1000 R4.2 Administration 585-313-507 Issue 3 April 2000 214
the machine not operating, the machine operating slowly, an application
query of a large non-indexed table, network congestion, and so on.
While the DIP is waiting for a response from the machine, the message
queue of the DIP may back up. A full message queue (the current maximum
is 255) may result in performance problems for the voice system.
To prevent this, the DIP is equipped with a timeout mechanism. By default,
the DIP times out every 45 seconds while waiting for a response. After the
timeout, the DIP deletes the messages currently queued and continues to
wait for a response from the database. The DIP continues to time out every
45 seconds and to empty the message queue. After the default of 300
seconds, the DIP automatically respawns and reinitializes.
The 45-second and 300-second timeout values can be altered in
/vs/data/ldbdip.rc file. This file is included with the generic package and
contains the following default values:
FIRST_TMOUT=45
SECOND_TMOUT=300
You can change these default values to any number that is appropriate for
your database and applications. If the ldbdip.rc file is missing, the DIP uses
the default timeout values of 45 seconds and 300 seconds.
!
CAUTION:
Always stop the voice system before shutting down the remote database
machine to avoid an unexpected interruption of service.