A problem on generic connectivity

Question

Hi,
I'm new here.
I use Oracle 8.1.7 database and SQL Server 2005.
From the Oracle side, I make SQLs and throw them to the SQL server side using generic connectivity.
In most cases it works fine but when I try to throw a rather heavy one that I expect will return 50,000 or 60,000 rows, trace files for generic connectivity contain the same error message that read:
Remote HO Agent received unexpected RPC disconnect
status 1003: ncrorpi_recv_procid, called from horg.c
but I get no Orcale errors such as ORA-03113.
In the worst case when I get this message several times a day, the Oracle instance goes down.
I suppose this might have something to do with network problems but since this system is already available for my customer, I would like to avoid this error if I can before I pinpoint what makes this error.
If anyone could suggest something helpful I would be greatly appreciated, thanks in advance.

Answer 1

The code whic I used is as follows...
import java.sql.*;
class Emp
public static void main (String args [])
throws SQLException, ClassNotFoundException
Class.forName ("oracle.jdbc.driver.OracleDriver");
Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:orcl", "scott", "tiger");
Statement stmt = conn.createStatement ();
ResultSet rset = stmt.executeQuery ("select ENAME from EMP");
while (rset.next ())
System.out.println (rset.getString (1));
I am using jdk1.2
and the driver classes are classes12_01.zip.
I have set the same in the classpath.
The error is ...
Exception in thread main java.sql.SQLException: IO Exception : Network Adapter could not establish the connection.
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:114)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:156)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:269)
oracle.jdbc.driver.OracleConnection.(init)(OracleConnection.java:210)
at Oracle.jdbc.driver.OracleDriver.getConnectionInstance(OracleDriver.java:251)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:224)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at Emp.main(Emp.java, Compiled code)
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