hi,All
when i change instance from the default i get the error: DB21016E The Command Line Processor encountered a system error while sending
the command to the backend process.
i search for DB21016E in the IBM Message Reference and get the information like these:
Explanation:
One of the following could have happened:
The backend process was abnormally terminated.
A system error occurred when reading from or writing to the back-end process queues.
A system error occurred when reading from the front-end process output queue.
User Response:
Resubmit the command. If the error occurs again, get help from your system administrator.
i cann't get the real help from the message.

$ uname
SunOS
$ echo $DB2INSTANCE
db2inst1
$ DB2INSTANCE=db2inst2
$ export DB2INSTANCE
$ db2 get instance
DB21016E The Command Line Processor encountered a system error while sending
the command to the backend process.

Best regard.

this will be related to the system setting
there is a utility that helps to define the needed settings for solaris for db2
is has todo with message queues..... (/etc/system)
see installation guide of db2 on solaris where this is explained

The dbosconf will give you kernel setting.

use db2 terminate before connecting to another instance.


regards,

mujeeb