This is an Easy and Step-by-Step Guide to Install the Oracle 11g R2 Database on OpenSuse Linux 11 and 12 Milestone
Relax and Take the Time to Reading, Understanding and Executing Carefully the Instructions Contained here.
To the Post Bottom you Find Links to Oracle 11g Database Detailed Troubleshooting Guides.

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After you Should Access the "Enterprise Manager" on Browser by the URL shown on the Last Screen.
On a Localhost for Example you Should Access the Enterprise Manager by the Address:
https://127.0.0.1:1158/emAnd you can Login with: User Name: SYS Password: oracleDatabasePassword From the Drop-down below Select >> Connect as SYSDBA You Should be Able to Access the Database by the Enterprise Manager!
How Managing, Start & Stop Oracle 11g R2 Database by SQLPlus Commands
SQLPlus Oracle 11g DB Quick-Start
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