oracle常用小命令

1. 显示当前连接。

SQL：
        SELECT *                                                                                                                                                 
        FROM V$SESSION                                                                                                                                 
        WHERE STATUS = 'INACTIVE'                                                                                                             
        AND USERNAME IS NOT NULL;                                                                                                         

2. 强制关闭用户的连接

SQL:
    a) SELECT USERNAME, SID, SERIAL#                                                                                                   
        FROM V$SESSION                                                                                                                                 
        WHERE STATUS = 'INACTIVE'                                                                                                             
        AND USERNAME IS NOT NULL;                                                                                                         
                                                                                                                                                                          
    b) ALTER SYSTEM KILL SESSION 'SID, SERIAL#'; --SID 和 SERIAL#是在步骤a)中得到的结果。

3. 从返回的结果中选择第m到n条记录

SQL:
        SELECT *                                                                                                                                                   
        FROM (                                                                                                                                                      
                     SELECT A.*, ROWNUM RN                                                                                                       
                     FROM (                                                                                                                                         
                                   SELECT *                                                                                                                        
                                   FROM YOURTABLE --这里请用你的SELECT语句代替                                            
                                  ) A                                                                                                                                     
                     WHERE ROWNUM <= n                                                                                                              
                     )                                                                                                                                                      
        WHERE RN >= m;                                                                                                                                      
    
4. 重新编译包 (package) 和 包体 (package body)
    此命令可以用于查看在SQLPLUS中创建的package的编译错误。

SQL:
        a) 编译 package
            ALTER PACKAGE YOUR_PACKAGE                                                                                                 
            COMPILE SPECIFICATION;                                                                                                                
        b) 编译 package body
            ALTER PACKAGE YOUR_PACKAGE                                                                                                 
            COMPILE BODY;                                                                                                                                   
        c) 查看错误
            SHOW ERR;                  

5 查看刚用过的命令

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