java.sql.SQLException: Protocol violation

[Ravi Kiran Va]

Hi

I am doing a SQL Operation (Select ) inside my servlet .
The query is simple select (Select sal from emp)
I am getting java.sql.SQLException: Protocol violation

Please tell me why i am getting this exception :

Protocol violation
java.sql.SQLException: Protocol violation
at oracle.jdbc.driver.SQLStateMapping.newSQLException(SQLStateMapping.ja
va:70)
at oracle.jdbc.driver.DatabaseError.newSQLException(DatabaseError.java:1
33)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java
:199)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java
:263)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java
:271)
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java
:445)
at oracle.jdbc.driver.T4C8Oall.receive(T4C8Oall.java:1053)
at oracle.jdbc.driver.T4CStatement.doOall8(T4CStatement.java:183)
at oracle.jdbc.driver.T4CStatement.executeForDescribe(T4CStatement.java:
780)
at oracle.jdbc.driver.T4CStatement.executeMaybeDescribe(T4CStatement.jav
a:855)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStateme
nt.java:1187)
at oracle.jdbc.driver.OracleStatement.executeQuery(OracleStatement.java:
1378)
at oracle.jdbc.driver.OracleStatementWrapper.executeQuery(OracleStatemen
tWrapper.java:387)
at TestServlet.doGet(TestServlet.java:45)

[Jeanne Boyarsky]

Ravi,
Let's try to narrow down the problem. Are you able to:
1) Run the SQL statement from the Oracle command line?
2) Run a different SQL statement in Java?

[Ravi Kiran Va]

Ya jaenne ,

I am able to run it under SQL Developer tool .

But not with in Servlet .