Problem while using result set

Hello,

I am getting the following error sometimes, while using resultset.next()
.
(As the OS is Linux Japanese vesrion , there are some special chars in
the message.)

An I/O error occured while reading from backend - Exception:
java.net.SocketException: \??\??ヲヌ???「フ?。・?????: \??\??ヲ
ヌ???「フ?。・?????
Stack Trace:

java.net.SocketException: \??\??ヲヌ???「フ?。・?????: \??\??ヲヌ???「フ?。・?????
at java.net.SocketInputStream.socketRead(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:86)
at java.io.BufferedInputStream.fill(BufferedInputStream.java:186)
at java.io.BufferedInputStream.read(BufferedInputStream.java:204)
at org.postgresql.PG_Stream.ReceiveChar(PG_Stream.java:141)
at org.postgresql.Connection.ExecSQL(Connection.java:396)
at org.postgresql.jdbc2.Statement.execute(Statement.java:294)
at org.postgresql.jdbc2.Statement.executeQuery(Statement.java:59)
at
org.postgresql.jdbc2.PreparedStatement.executeQuery(PreparedStatement.j
ava:99)
at java.util.TimerThread.mainLoop(Timer.java:435)
at java.util.TimerThread.run(Timer.java:385)
End of Stack Trace

Please give me your inputs.

Regards,
Ravi