SQL> select * from v$version;
BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Express Edition Release 11.2.0.2.0 - 64bit Production
PL/SQL Release 11.2.0.2.0 - Production
CORE 11.2.0.2.0 Production
TNS for Linux: Version 11.2.0.2.0 - Production
NLSRTL Version 11.2.0.2.0 - Production
SQL> 

SQL> desc product_component_version
 Name      Null"htmlcode">

SQL> column product format a20
SQL> column version format a20
SQL> column status format a20
SQL> select * from product_component_version;
PRODUCT    VERSION  STATUS
-------------------- -------------------- --------------------
NLSRTL    11.2.0.2.0  Production
Oracle Database 11g 11.2.0.2.0  64bit Production
Express Edition
PL/SQL    11.2.0.2.0  Production
TNS for Linux:   11.2.0.2.0  Production
SQL> 


v$intance
当然如果有示例的信息，也可以通过确认v$intance视图中的Version字段来确认版本信息


SQL> desc v$instance
 Name    Null"htmlcode">

oracle@e871d42341c0:~$ sqlplus -v
SQL*Plus: Release 11.2.0.2.0 Production
oracle@e871d42341c0:~$ 


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