Error when changing Oracle thin driver to Bea's Oracle driver

Question

Hi All !
     I was using this code with WL9.2 and Oracle 10 until recently with an Oracle thin driver
     URL: jdbc:oracle:thin:@[x.x.x.x]:1521:[SID]
     Driver Class: oracle.jdbc.xa.client.OracleXADataSource
     Now this was changed to
     URL: jdbc:bea:oracle://[x.x.x.x]:1521
     Class Driver Name: weblogic.jdbcx.oracle.OracleDataSource
     (Bea's oracle driver)
     but the code is not ok.
     The error is Caused by: java.lang.ClassCastException: weblogic.jdbc.wrapper.CallableStatement_weblogic_jdbcx_base_BaseCallableStatementWrapper
     at      com.esi.packages.dataaccess.pagination.ResolvePackageCriteriaPageProvider.getRPCSQLOfPackage(ResolvePackageCriteriaPageProvider.java:1208
     (this is the line where the cast of the result connection.prepareCall() is happenning).
     I tried different CallableStatement objects, from Bea but no success. Any idea/working example about this?
     The code follows:
     org.hibernate.Session session = this.getSession();
     String sqlCode = null;
     OracleThinClob sqlClobCode = null;
     StringBuffer sb = new StringBuffer();
     java.sql.Connection connection = null;
try {
connection = session.connection();
connection.setAutoCommit(false);
try {
     OracleCallableStatement proc = (OracleCallableStatement) connection.prepareCall("{ ? = call packages_pkg.clob_get_sql_psd_and_package (?,?,?,?,?) }");
     proc.registerOutParameter(1, Types.CLOB);
     proc.setString(2, pkgStatus);
     proc.setLong(3, packageSk); // pkg sk
     proc.setDate(4, new java.sql.Date(date.getTime())); //date
     proc.setString(5, null);
     if(null == provinceSk){
          proc.setNull(6, java.sql.Types.NUMERIC); //province sk
     }else{
          proc.setLong(6, provinceSk); //province sk
ResultSet rs = null;
try {
proc.execute();
sqlClobCode = (OracleThinClob)proc.getClob(1);
Writer clobWriter = ((OracleThinClob)sqlClobCode).getCharacterOutputStream();
if(null != clobWriter){
try {
     char[] buf = new char[32000];
     buf[0] = '\0';
     sqlClobCode.getChars(1, sqlClobCode.getChunkSize(), buf);
     sb.append(buf);
} catch(Exception exception) {                           
logger.debug("Cannot read the SQL from CLOB that resolves the package");
throw exception;
sqlCode = sb.toString();
}catch(Exception e){
     logger.error("Cannot retrieve the benefits types from the database.");
     throw new RuntimeException("Cannot retrieve the benefits types from the database.");
}finally {               
if(null != rs){
rs.close();
if(null != proc){
     proc.close();
}

Answer 1

Horatiu Stanciu wrote:
Hi All !
     I was using this code with WL9.2 and Oracle 10 until recently with an Oracle thin driver
     URL: jdbc:oracle:thin:@[x.x.x.x]:1521:[SID]
     Driver Class: oracle.jdbc.xa.client.OracleXADataSource
     Now this was changed to
     URL: jdbc:bea:oracle://[x.x.x.x]:1521
     Class Driver Name: weblogic.jdbcx.oracle.OracleDataSource
     (Bea's oracle driver)
     but the code is not ok.
     The error is Caused by: java.lang.ClassCastException: weblogic.jdbc.wrapper.CallableStatement_weblogic_jdbcx_base_BaseCallableStatementWrapper
     at      com.esi.packages.dataaccess.pagination.ResolvePackageCriteriaPageProvider.getRPCSQLOfPackage(ResolvePackageCriteriaPageProvider.java:1208
     (this is the line where the cast of the result connection.prepareCall() is happenning).The weblogic.jdbc.vendor.oracle.OracleCallableStatement
is for obtaining access to some Oracle's non-standard
methods:
void registerIndexTableOutParameter(int i, int j, int k, int l) throws java.sql.SQLException;
void registerOutParameter(int i, int j, int k, int l) throws java.sql.SQLException;
java.sql.ResultSet getCursor(int i) throws java.sql.SQLException;
java.io.InputStream getAsciiStream(int i) throws java.sql.SQLException;
java.io.InputStream getBinaryStream(int i) throws java.sql.SQLException;
java.io.InputStream getUnicodeStream(int i) throws java.sql.SQLException;
You're not calling any of those. Good. Just remove the cast. Stick to standard
JDBC if you can. Also, note the comments I added about your setAutoCommit() call.
Joe
     I tried different CallableStatement objects, from Bea but no success. Any idea/working example about this?
     The code follows:
     org.hibernate.Session session = this.getSession();
     String sqlCode = null;
     OracleThinClob sqlClobCode = null;
     StringBuffer sb = new StringBuffer();
     java.sql.Connection connection = null;
try {
connection = session.connection();
connection.setAutoCommit(false); // DON'T DO THIS!! I SEE NO COMMIT. LET WEBLOGIC HANDLE ANY TX.
try {
     OracleCallableStatement proc = connection.prepareCall("{ ? = call packages_pkg.clob_get_sql_psd_and_package (?,?,?,?,?) }");
     proc.registerOutParameter(1, Types.CLOB);
     proc.setString(2, pkgStatus);
     proc.setLong(3, packageSk); // pkg sk
     proc.setDate(4, new java.sql.Date(date.getTime())); //date
     proc.setString(5, null);
     if(null == provinceSk){
          proc.setNull(6, java.sql.Types.NUMERIC); //province sk
     }else{
          proc.setLong(6, provinceSk); //province sk
ResultSet rs = null; // WHY IS THIS HERE?
try {
proc.execute();
sqlClobCode = (OracleThinClob)proc.getClob(1);
Writer clobWriter = ((OracleThinClob)sqlClobCode).getCharacterOutputStream();
if(null != clobWriter){
try {
     char[] buf = new char[32000];
     buf[0] = '\0';
     sqlClobCode.getChars(1, sqlClobCode.getChunkSize(), buf);
     sb.append(buf);
} catch(Exception exception) {                           
logger.debug("Cannot read the SQL from CLOB that resolves the package");
throw exception;
sqlCode = sb.toString();
}catch(Exception e){
     logger.error("Cannot retrieve the benefits types from the database.");
     throw new RuntimeException("Cannot retrieve the benefits types from the database.");
}finally {               
if(null != rs){
rs.close();
if(null != proc){
     proc.close();