List of Oracle Database Version Release.

From Oracle1 to Oracle6 there was no release numbering.
Since version 7, Oracle's RDBMS release numbering has used the following codes:

Oracle7: 7.0.16 — 7.3.4
Oracle8 Database: 8.0.3 — 8.0.6
Oracle8i Database Release 1: 8.1.5.0 — 8.1.5.1
Oracle8i Database Release 2: 8.1.6.0 — 8.1.6.3
Oracle8i Database Release 3: 8.1.7.0 — 8.1.7.4
Oracle9i Database Release 1: 9.0.1.0 — 9.0.1.5
Oracle9i Database Release 2: 9.2.0.1 — 9.2.0.8
Oracle Database 10g Release 1: 10.1.0.2 — 10.1.0.5
Oracle Database 10g Release 2: 10.2.0.1 — 10.2.0.4
Oracle Database 11g Release 1: 11.1.0.6

Related Documents

New features in Oracle database 11g of data pump utility

New features of oracle perfomance in 10.2g

How to determine the software version of the database and the Data Pump client

Timeline of Oracle RDBMS Major Release Version.