Fail over not reliable

Question

          When my database fails over, my weblogic 5.1 (sp10) cluster doesn't always reconnect
          when the DB comes back up. It just works for a minute or so, then freezes....
          no errors... I have tested the DB and it is fine, if I restart my app-servers
          they reconnect just fine. As it stands, i get about a 50% success ratio on the
          fail-over.
          I have the following setting for my connection Pool :
          weblogic.jdbc.connectionPool.ejbPool=\
          url=jdbc20:weblogic:oracle,\
          driver=weblogic.jdbc20.oci.Driver,\
          loginDelaySecs=0,\
          initialCapacity=5,\
          maxCapacity=35,\
          capacityIncrement=2,\
          allowShrinking=true,\
          shrinkPeriodMins=5,\
          refreshTestMinutes=1,\
          testConnsOnReserve=true,\
          testConnsOnRelease=true,\
          testTable=dual,\
          props=user=ZZZ;password=YYY;server=XXX;
          ANY help would be appreciated.
          Thanks,
          Jacques
          

Answer 1

Have you tried resetting the connection pool manually when the database
          server fails over? You can do this via the weblogic.Admin Java program
          from the command line so it is scriptable. Typically, I recommend that
          you add this to your database fail-over scripts so that as soon as the
          database comes back up, the script invokes the command to reset the
          connection pool on each server...
          Raj Alagumalai wrote:
          > Jacques,
          >
          > The value that you have set for refreshTestMinutes is very low.
          >
          > > refreshTestMinutes=1,\
          >
          >
          >
          > This will cause the server to refresh every connection not being used
          > every minute. I would suggest that you increase this value and enable
          > jdbc logging and test failover
          >
          > Thanks
          >
          >
          > Raj Alagumalai
          > Developer Relations Engineer
          > BEA Support
          >
          >
          >
          > jacques Vigeant wrote:
          >
          >> When my database fails over, my weblogic 5.1 (sp10) cluster doesn't
          >> always reconnect
          >> when the DB comes back up. It just works for a minute or so, then
          >> freezes....
          >> no errors... I have tested the DB and it is fine, if I restart my
          >> app-servers
          >> they reconnect just fine. As it stands, i get about a 50% success
          >> ratio on the
          >> fail-over.
          >> I have the following setting for my connection Pool :
          >> weblogic.jdbc.connectionPool.ejbPool=\
          >> url=jdbc20:weblogic:oracle,\
          >> driver=weblogic.jdbc20.oci.Driver,\
          >> loginDelaySecs=0,\
          >> initialCapacity=5,\
          >> maxCapacity=35,\
          >> capacityIncrement=2,\
          >> allowShrinking=true,\
          >> shrinkPeriodMins=5,\
          >> refreshTestMinutes=1,\
          >> testConnsOnReserve=true,\
          >> testConnsOnRelease=true,\
          >> testTable=dual,\
          >> props=user=ZZZ;password=YYY;server=XXX;
          >>
          >>
          >> ANY help would be appreciated.
          >> Thanks,
          >> Jacques
          >>
          >