Title: Active MQ Subject Matter Expert/ Engineer
1) Configuration for Availability - we have 3 servers for usewjms. At any given time only one of them is master and the others are passive. These Master/passive states are kept in the DB. A DB lock occurs very rarely and the solution is to contact the DBAs and remove the lock, or to stop the services on both servers and try to restart on a single server.
2) Memory Management for Availability - we need to ensure the limits are properly set for all services consuming messages -
3) DLQ Management -
The redelivered messages are bloating the queue, We need to look at the re-deliverry attempts and route the messages to the DLQ.
4) Monitoring for Availability - we have heartbeat monitors for dequeuing of messages. We need monitoring for enqueuing and db lock occurrences. We desire monitoring on message size in order to anticipate slowness.
OS: Running: OracleLinux 7.9
Kernel: Linux Kernel 4.1.12-124.45.6.el7uek.x86_64
apache active version : 5.14.1
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