1. v$version
SQL> desc v$version;
Name
Null? Type
-------------------------------------------------------------------------------------------------
BANNER VARCHAR2(64)
SQL> select * from v$version where rownum = 1;
BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 – Prod
SQL> select * from v$version;
BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - Prod
PL/SQL Release 10.2.0.4.0 - Production
CORE 10.2.0.4.0 Production
TNS for 32-bit Windows: Version 10.2.0.4.0 - Production
NLSRTL Version 10.2.0.4.0 – Production
2. v$instance
SQL> desc v$instance;
Name Null? Type
------------------------------------------------------------------------------------------------
INSTANCE_NUMBER
NUMBER
INSTANCE_NAME
VARCHAR2(16)
HOST_NAME
VARCHAR2(64)
VERSION
VARCHAR2(17)
STARTUP_TIME
DATE
STATUS
VARCHAR2(12)
PARALLEL
VARCHAR2(3)
THREAD#
NUMBER
ARCHIVER
VARCHAR2(7)
LOG_SWITCH_WAIT
VARCHAR2(15)
LOGINS
VARCHAR2(10)
SHUTDOWN_PENDING
VARCHAR2(3)
DATABASE_STATUS
VARCHAR2(17)
INSTANCE_ROLE
VARCHAR2(18)
ACTIVE_STATE
VARCHAR2(9)
BLOCKED
VARCHAR2(3)
SQL> select version from v$instance;
VERSION
-----------------
10.2.0.4.0