Example: sqlplus -V
SQL*Plus: Release 9.2.0.3.0 - Production
In order to see version information about Oracle using nhisql, please run the following commands:
UNIX:
$NH_HOME/bin/sys/nhisql 'select * from v$version;'
WINDOWS:
%NH_HOME%\bin\sys\nhisql 'select * from v$version;'
In order to check the Oracle version while in an SQL*PLUS session, use the following query:
select * from v$version;