oracle系统函数sys_context

SQL> select sys_context('userenv','db_name') from dual;
 
SYS_CONTEXT('USERENV','DB_NAME
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orcl
 
SQL> select sys_context('userenv','language') from dual;
 
SYS_CONTEXT('USERENV','LANGUAG
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SIMPLIFIED CHINESE_CHINA.ZHS16GBK
 
SQL> select sys_context('userenv','terminal') from dual;
 
SYS_CONTEXT('USERENV','TERMINA
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SUN-PC
 
SQL> select sys_context('userenv','session_user') from dual;
 
SYS_CONTEXT('USERENV','SESSION
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SCOTT
 
SQL> select sys_context('userenv','current_schema') from dual;
 
SYS_CONTEXT('USERENV','CURRENT
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SCOTT