version of database

Oracle Databa开发者_StackOverflowse 10g Release 10.2.0.3.0 - 64bit Production

PL/SQL Release 10.2.0.3.0 - Production 
CORE    10.2.0.3.0      Production 
TNS for Solaris: Version 10.2.0.3.0 - Production 
NLSRTL Version 10.2.0.3.0 - Production 

in above result what is the database version

Isnt it very obvious 10.2.0.3.0 is the version?

Each component may have different version numbers (otherwise, why have seperate lines?), but the database itself, the main component, will be the CORE line.

If you're asking about the numbers; according to Wikipedia:

The version-numbering syntax within each release follows the pattern: major.maintenance.application-server.component-specific.platform-specific.