Major Database Release Number (22)

The first digit is the most general identifier. It represents a major new version of the
software that contains significant new functionality.

Database Maintenance Release Number
The second digit represents a maintenance release level. Some new features may also
be included.

Application Server Release Number
The third digit reflects the release level of the Oracle Application Server (OracleAS).

Component-Specific Release Number
The fourth digit identifies a release level specific to a component. Different
components can have different numbers in this position depending upon, for example,
component patch sets or interim releases.

Platform-Specific Release Number
The fifth digit identifies a platform-specific release. Usually this is a patch set. When
different platforms require the equivalent patch set, this digit will be the same across
the affected platforms.

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