One node RAC pause/hang/block on other node shutdown
656475Dec 15 2009 — edited Dec 30 2009Hi,
We have a Java application running on Linux servers connecting to a 10.2.0.1 RAC cluster, also Linux. When the application starts it opens up a pool of connections to the databsae, and these are used throughout the life time of the application. One server connects to one RAC node.
AppA - DBA
AppB - DBB
When we shutdown one node, the application connecting to that node stops, which is what we would expect in this configuration.
What is strange is that the other application blocks for 63 seconds and then continues. So it is like the database is blocking, or the database connections are blocking.
We are not using TAF, FAN, FCN, LB, VIPs or any special features, just simple lightweight JDBC from one server to one database. In fact I do not thing we are unwittingly using any of these features, we have them switched off.
john