I've re-installed OAS, in a different directory to oracle 8.1.6 server. Now when I into the OAS manager and try to install the pl/sql toolkit or create the DAD, I get the error below OWS-28200: Oracle Database Error : 12514 Error while trying to retrieve text for error ORA-12514 Doing a tail -f on the listener.ora file and trying gives me the following - 03-JUL-2001 13:40:58 * (CONNECT_DATA=(SID=*)(SERVICE_NAME=unetdb2.)(CID=(PROGRAM=)(HOST=unetdb2)(USER=o racle))) * (ADDRESS=(PROTOCOL=tcp)(HOST=10.102.254.6)(PORT=54960)) * establish * unetdb2. * 12514 TNS-12514: TNS:listener could not resolve SERVICE_NAME given in connect descriptor -- Sajid Iqbal k -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Sajid Iqbal INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).