Abot oracle.sql.opaque exception

Question

Wheen I run a program which is retreiving xmltype data from databse using a application then it works fine. But If I use jsp for same a deploy it on OC4jJ server it fgives exception at this line
xml = (XMLType)resultSet.getObject(1);
Excpeuin is ClassCasrtException: oracle.sql.OPAQUE
Please expalon. Methis is given below it works fine with application
public Vector doSelect (String keywords[]) throws Exception
//System.out.println("++++ Start of doSelect() method ++++");
// String SQLTEXT="SELECT extract(warehouse_spec,'/"+ str + "') as XMLDocument FROM WAREHOUSES";
/* select extract (value(t),'/VideoSubIndex')
* from mastersvideo x,TABLE (xmlsequence (
* extract (x.vindex,'/VideoIndexes/VideoSubIndex'))) t
* where existnode(value(t),'/VideoSubIndex[Transcription="So basically"]')=1
// String SQLTEXT="SELECT extract(x.vindex,'/VideoIndexes/VideoSubIndex/Transcription') as XMLDocument FROM mastersvideo x"+
// " where existsnode(x.vindex,'/VideoIndexes/VideoSubIndex[Transcription=\"So basically\"]')=1";
String SQLTEXT="select extract (value(t),'/VideoSubIndex') from mastersvideo x,TABLE (xmlsequence (extract (x.vindex,'/VideoIndexes/VideoSubIndex'))) t where existsnode(value(t),'/VideoSubIndex[Transcription=\"So basically\"]')=1";
// String SQLTEXT="select extract (value(t),'/VideoSubIndex') from mastersvideo x,TABLE (xmlsequence (extract (x.vindex,'/VideoIndexes/VideoSubIndex'))) t where existsnode(value(t),'/VideoSubIndex[ora:contains(Transcription,\"way\")>0]','xmlns:ora=\"http://xmlns.oracle.com/xdb\"')=1";
//keywords="sql";
//description="basically";
for(int i=0;i<keywords.length;i++)
System.out.println("KeyWords Received"+keywords);
String SQLTEXT=null;
if (keywords.length>0)
SQLTEXT="select extract (value(t),'/VideoSubIndex') from mastersvideo x,TABLE (xmlsequence (extract (x.vindex,'/VideoIndexes/VideoSubIndex'))) t where existsnode(value(t),'/VideoSubIndex[ora:contains(@KeyTerm,\""+keywords[0]+"\")>0]','xmlns:ora=\"http://xmlns.oracle.com/xdb\"')=1"+
" OR existsnode(value(t),'/VideoSubIndex[ora:contains(Transcription,\""+keywords[0]+"\")>0]','xmlns:ora=\"http://xmlns.oracle.com/xdb\"')=1";
for(int i=1;i<keywords.length;i++)
System.out.println("Value of i "+i+" And Value Here"+keywords[i]);
SQLTEXT+=" OR existsnode(value(t),'/VideoSubIndex[ora:contains(@KeyTerm,\""+keywords[i]+"\")>0]','xmlns:ora=\"http://xmlns.oracle.com/xdb\"')=1"+
" OR existsnode(value(t),'/VideoSubIndex[ora:contains(Transcription,\""+keywords[i]+"\")>0]','xmlns:ora=\"http://xmlns.oracle.com/xdb\"')=1";
// SQLTEXT+=
// Running Query
// String SQLTEXT="select extract (value(t),'/VideoSubIndex') from mastersvideo x,TABLE (xmlsequence (extract (x.vindex,'/VideoIndexes/VideoSubIndex'))) t where existsnode(value(t),'/VideoSubIndex[ora:contains(@KeyTerm,\""+keywords[0]+"\")>0]','xmlns:ora=\"http://xmlns.oracle.com/xdb\"')=1"+
// " OR existsnode(value(t),'/VideoSubIndex[ora:contains(Transcription,\""+keywords[0]+"\")>0]','xmlns:ora=\"http://xmlns.oracle.com/xdb\"')=1";
//System.out.println(SQLTEXT);
OraclePreparedStatement sqlStatement = null;
//OracleResultSet resultSet = null;
ResultSet resultSet = null;
oracle.xdb.XMLType xml = null;
try
System.out.println("SQL := " + SQLTEXT);
sqlStatement = (OraclePreparedStatement) getConnection("scott","tiger").prepareStatement(SQLTEXT);
System.out.println("+++++ OraclePreparedStatement created +++++");
// resultSet = (OracleResultSet) sqlStatement.executeQuery();
resultSet = sqlStatement.executeQuery();
System.out.println("***** Query Executed *****");
// return resultSet;
Vector resVector=new Vector();
while(resultSet.next())
System.out.println("Hello Miss World");
xml = (XMLType)resultSet.getObject(1);
//System.out.println("Hello World");
resVector.add(xml);
// xml.get
System.out.println(xml.getStringVal());
//System.out.println("Hello Miss World");
System.out.println("Vector size is "+resVector.size());
return resVector;
catch(NullPointerException npe)
catch (SQLException SQLe)
if (sqlStatement != null)
sqlStatement.close();
throw SQLe;
/*if(resultSet!=null)
resultSet.close();
System.out.println("**** Resultset closed ****");
if(sqlStatement!=null)
sqlStatement.close();
System.out.println("**** Resultset closed ****");
System.out.println("### Returning Vector ###");
return null;
} // End of Function doSelect()

Answer 1

I believe the 9.2 XDK requires the use of the 9.2 JDBC drivers.
In general, later versions of the JDBC driver will work with older versions of the database, but not vice versa. The 8.1.7 JDBC drivers won't necessarily work with a 9.2 database, but the 9.2 JDBC drivers will work with an 8.1.7 database.
Justin