Explanation/Reference:
Explanation:
For durable subscriptions, WebLogic JMS stores a message in a persistent file or database until the message has been delivered to the subscribers or has expired, even if those subscribers are not active at the time that the message is delivered.
Note #1: Durable subscriptions means that weblogic server will store the messages in a persistent store (i.e a file-store or a JDBC-store) until those messages are delivered to the subscribers/listener. This technic helps weblogic server to make sure that the messages get delivered even if those subscribers/ listeners are not active at the time that the message is getting delivered.
As all of us know that in Topic's the senders/producers just send the messages to the topic and the receivers/listeners have subscribe them self to get those messages, hence senders/producers does not have any concern if the messages are been received or not. However with this feature weblogic make sure all the subscribers would get the messages as the messages gets stored in a persistence store.
Note #2:
* Consumers Current Count: Current number of consumers accessing this destination
* MessagesCurrentCount: The current number of messages in the destination. This does not include the pending messages.
* MessagesPendingCount: The number of pending messages in the destination.
Pending messages are over and above the current number of messages. A pending message is one that has either been sent in a transaction and not committed, or that has been received and not committed or acknowledged.
References: