Hi Madhu
Is the interface EO or EOIO?
If your SMQ2 queues are stucked, you should look for the message that is in error, it should be in status SYSFAIL.
If you click that message, it should bring you to the corresponding message in SXI_MONITOR.
You need to then check what is causing the error and resolve it. If it is an intermittent error (i.e. connection problem) you can restart the message to reprocess it. If it is a permanent error (i.e. incorrect data) then you need to cancel the message.
Once you have resolved the blocking message, the queue should automatically run back again.
In generaly, if a lot of your queues are blocked, it could be a symptom of a system wide issue. If only 1 is blocked, it might be just 1 particular problematic interface/message.
There are a lot of discussions/threads/blogs on SCN on this. You can easily search for more details.
Rgds
Eng Swee