The server ends a client session because the client was holding database locks during a transaction. The client did not respond within the number of seconds specified by the COMMTIMEOUT server option.
The server rolls back the transaction that was in progress and the session is ended. Server operation continues.
If this message appears frequently, consider incrementing the value specified for the COMMTIMEOUT option. Use the SETOPT command to change the value of the COMMTIMEOUT option without stopping or restarting the server. This update changes the amount of time that the server waits for an expected client message during an operation that causes a database update.