The ping command reported that the target queue manager for the specified channel was unavailable. It might be unavailable because the remote queue manager is not running, or because the listening program on the remote computer is not running.
Ensure that the remote queue manager and listening program are running, then retry the ping.
An attempt to allocate a conversation to a remote system failed. This allocation failure might be caused by an entry in the channel definition table that is not valid, or because the listening program at the remote system is not running.
Ensure that the channel definition is correct, and start the listening program if necessary.
The bind to a remote system during session negotiation has failed.
In a command message, one of the following situations has occurred:
It is possible that the ping could not be performed because the coded character set identifiers are not compatible, in which case the correct value is not returned.
The channel was closed prematurely. This closure can occur because a user stopped the channel while it was running, or because a channel exit decided to close the channel.
Find out why the channel was closed prematurely. Restart the channel if necessary.
An attempt was made to perform an operation on a channel, but the channel is currently active.
Stop the channel, or wait for it to end.
The channel specified does not exist. MQ Explorer has a record of a channel that no longer exists, so the attempt to ping it failed.
There was a configuration error in the channel definition or communication subsystem. This error might be caused by one of the following situations:
An error occurred while receiving data from a remote computer. The connection to the remote computer has unexpectedly ended.
The attempt to establish a connection to a remote computer was rejected. The remote computer might not be configured to allow a connection from this computer.
For LU 6.2, either the user name or the password supplied to the remote computer is incorrect.
For TCP, the remote computer might not recognize the local computer as valid, or the TCP listener program might not be started.
The connection name in the channel definition could not be resolved to a network address; either the name server does not contain the entry, or the name server was not available.
Ensure that the connection name is correctly specified, and that the name server is available.
An attempt to allocate a conversation to a remote system was unsuccessful. The error might be transitory, and the allocation might succeed later. This situation can occur if the listening program at the remote system is not running.
Ensure that the listening program is running, and retry the ping.
The security exit specified in the channel definition terminated the attempt to ping the channel.
The user exit specified in the channel definition could not be found when the channel was pinged. Verify the name of the user exit in the channel definition, and retry the ping.
The remote channel is on a queue manager that is terminating.
The channel returned an error code when pinged. See IBM MQ Reference for more information about a specific return code.