1Z0-001 Introduction to Oracle: SQL and PL/SQL (retired)
or
1Z0-007 Introduction to Oracle9i SQL®
or
1Z0-047 Oracle Database SQL Expert
or
1Z0-051 Oracle Database 11g: SQL Fundamentals I
+
Oracle9i Database: Fundamentals I
1Z0-031
Gives you oracle 9i DBA OCA certification