Stuck Threads On DoPingDatabase (Doc ID 2271927.1)

Last updated on JULY 12, 2017

Applies to:

JDBC - Version 12.1.0.2.0 and later
Information in this document applies to any platform.

Symptoms

Stuck threads are generated on doPingDatabase when using JDBC 12.1.0.2 on FMW 11.1.1.9.0.

Blocking thread is JDBC doPingDatabase :

 java.lang.Thread.State: RUNNABLE
  at java.net.SocketInputStream.socketRead0(Native Method)
  at java.net.SocketInputStream.read(SocketInputStream.java:164)
  at java.net.SocketInputStream.read(SocketInputStream.java:134)
  at oracle.net.nt.MetricsEnabledInputStream.read(TcpNTAdapter.java:730)
  at oracle.net.ns.Packet.receive(Packet.java:310)
  at oracle.net.ns.DataPacket.receive(DataPacket.java:108)
  at oracle.net.ns.NetInputStream.getNextPacket(NetInputStream.java:325)
  at oracle.net.ns.NetInputStream.read(NetInputStream.java:269)
  at oracle.net.ns.NetInputStream.read(NetInputStream.java:191)
  at oracle.net.ns.NetInputStream.read(NetInputStream.java:108)
  at oracle.jdbc.driver.T4CSocketInputStreamWrapper.readNextPacket(T4CSocketInputStreamWrapper.java:126)
  at oracle.jdbc.driver.T4CSocketInputStreamWrapper.read(T4CSocketInputStreamWrapper.java:82)
  at oracle.jdbc.driver.T4CMAREngine.unmarshalUB1(T4CMAREngine.java:1178)
  at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:314)
  at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:205)
  at oracle.jdbc.driver.T4CTTIoping.doOPING(T4CTTIoping.java:55)
  - locked (a oracle.jdbc.driver.T4CConnection)
  at oracle.jdbc.driver.T4CConnection.doPingDatabase(T4CConnection.java:4751)
  at oracle.jdbc.driver.PhysicalConnection$3.run(PhysicalConnection.java:12808)
  at java.lang.Thread.run(Thread.java:798)


Changes

 

Cause

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