The Oracle 8 server generates an ORA-01002:fetch out of sequence error message when you use a FOR UPDATE statement with AUTOCOMMIT turned on (which is the default state when using JDBC). This is known to happen on Oracle 8.0 and 8.1 on Solaris and on Oracle 8.1 on Windows NT. If you turn AUTOCOMMIT off, you will not receive this error. Because this problem is due to a change in the Oracle 8 server, you should contact Oracle support for more information.
A system administrator can specify on which WebLogic Server(s) applications will run by specifying targets when configuring connection factories. Each connection factory can be deployed on multiple WebLogic servers.
Note: If you use the default connection factory, you have no control over the WebLogic server on which the connection factory may be deployed. If you would like to target a particular WebLogic server, create a new connection factory and specify the appropriate JMS server target(s).
If your WebLogic jDriver for Oracle application produces an SQLException such as:
java.sql.SQLException: ORA-12536: TNS: operation would block
You can look up an Oracle error by using the oerr command. For example, the description of error ORA-12536 can be found with the command:
> oerr ora 12536
To use Unicode codesets:
1. Install the appropriate codeset when you install Oracle. If you did not do this in the original installation, you will need to re-run the Oracle installer and install the proper codeset.
2. Define the NLS_LANG variable in the environment where the JDBC driver is running. Do this by assigning the proper codeset to NLS_LANG in the shell from where you start the WebLogic Server.
The Developers Guide has more information about internationalization support.
Yes. Use the setAttribute() method for SAX mode parsing and the getAttribute() method for DOM mode parsing. Using these methods in a Servlet, however, is a WebLogic-specific feature. This means that the Servlet may not be fully portable to other Servlet engines, so use the feature with caution.
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