Bus is switching between primary and secondary DPS randomly.
BUS.LOG has errors
2019-10-22 08:54:22,909 [Thread-5 (ActiveMQ-client-netty-threads)] WARN server.handlePacket(209) - AMQ222086: error handling packet PACKET(ReplicationDeleteMessage)[type=93, channelID=2, packetObject=ReplicationDeleteMessage] for replication
java.lang.IllegalStateException: Cannot find add info 2147497001 on compactor or current records
Other bus errors
2019-10-22 07:04:19,942 [Thread-8 (activemq-netty-threads)] ERROR server.handlePacket(505) - AMQ224016: Caught exception
ActiveMQIllegalStateException[errorType=ILLEGAL_STATE message=Cannot find ref to ack 4295089986]
Please also check the settings with the guidelines here:
here the oracle DB was set to only 300 cursors.
advised to increase the open_cursors limit to the recommended 2000.
Other parameters of concern as they do not meet the requirements for a large deployment:
SGA Target should be 4GB currently 2GB
Processes should be 1000, currently 800
was not respected in this case.