java - Oracle 11g connection reset error

Question

Am seeing the below error while trying to connect to Oracle 11g on Red Hat Linux, 64-bit using thin jdbc drivers. Would highly appreciate if anyone can throw more light on how to go about troubleshooting this.

 Caused by: java.net.SocketException: Connection reset
    at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:113)
    at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
    at oracle.net.ns.DataPacket.send(DataPacket.java:199)
    at oracle.net.ns.NetOutputStream.flush(NetOutputStream.java:211)
    at oracle.net.ns.NetInputStream.getNextPacket(NetInputStream.java:227)
    at oracle.net.ns.NetInputStream.read(NetInputStream.java:175)
    at oracle.net.ns.NetInputStream.read(NetInputStream.java:100)
    at oracle.net.ns.NetInputStream.read(NetInputStream.java:85)
    at oracle.jdbc.driver.T4CSocketInputStreamWrapper.readNextPacket(T4CSocketInputStreamWrapper.java:123)
    at oracle.jdbc.driver.T4CSocketInputStreamWrapper.read(T4CSocketInputStreamWrapper.java:79)
    at oracle.jdbc.driver.T4CMAREngine.unmarshalUB1(T4CMAREngine.java:1122)
    at oracle.jdbc.driver.T4CMAREngine.unmarshalSB1(T4CMAREngine.java:1099)
    at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:288)
    at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:191)
    at oracle.jdbc.driver.T4CTTIoauthenticate.doOAUTH(T4CTTIoauthenticate.java:366)
    at oracle.jdbc.driver.T4CTTIoauthenticate.doOAUTH(T4CTTIoauthenticate.java:752)
    at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:366)

Answer 1

We've had something very similar, moved a program from 32-bit to 64bit OS & a number of concurrent processes would throw the IO Error: Connection Reset.

Stumbled across this which fixed it:

https://community.oracle.com/message/3701989

Basically add the -Djava.security.egd=file:/dev/./urandom parameter and it's good to go :)