Error DB21017E - system error with the front-end process output queue
DB21017E The Command Line Processor encountered a system error with the front-end process output queue.
Check the MSGMNI kernel parameter, with the following command:
ipcs -l
If this value is not to process your db2 requests, you will have to increase it.
edit the /etc/sysctl.conf file inserting the line below:
kernel.msgmni = 1024
the last step is apply the command to load this new value on OS:
sysctl -p