ORA 03113 end of file on communication channel

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ORA-03113 end-of-file on communication channel
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ORA-03113 end-of-file on communication channel

Cause: An unexpected end-of-file was processed on the communication
channel. The problem could not be handled by the Net8 two-task software. This message could occur if the shadow two-task process associated with a Net8 connect has terminated abnormally, or if there is a physical failure of the interprocess communication vehicle, that is, the network or server machine went down.
In addition, this message could occur when any of the following
statements/commands have been issued:
n ALTER SYSTEM KILL SESSION ... IMMEDIATE
n ALTER SYSTEM DISCONNECT SESSION ... IMMEDIATE
n SHUTDOWN ABORT/IMMEDIATE/TRANSACTIONAL

Action: If this message occurs during a connection attempt, check the setup files for the appropriate Net8 driver and confirm Net8 software is correctly installed on the server. If the message occurs after a connection is well established, and the error is not due to a physical failure, check if a trace file was generated on the server at failure time. Existence of a trace file may suggest an Oracle internal error that requires the assistance of Oracle Support Services.

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