Oracle12C 用户创建、修改、授权、删除、登录等操作

悠悠 2023-10-17 21:56 6阅读 0赞

##### 1.以系统用户命令行登录： #####

sqlplus sys/sys as sysdba;

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##### 2. 确认选择CDB #####

select name,cdb from v$database;

`` ``

col pdb_name for a30

select pdb_id,pdb_name,dbid,status,creation_scn from dba_pdbs;

![70 1][]

select con_id,dbid,NAME,OPEN_MODE from v$pdbs;

CON_ID       DBID          NAME                        OPEN_MODE
    ---------- ---------- ------------------------------ ----------
             2      964253477      PDB$SEED                 READ ONLY
             3     3329151580     ORCLPDB                    MOUNTED

在这里补充一下：orace12c 中PDB数据库 默认为ORACLPDB ,用户可以根据自己需求，

再次创建一个或多个PDB数据库表空间，数据库名称不重复即可，如下操作。

`` ``

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找到并点击Database Configurantion Assistant 然后下一步：

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按照步骤依次操作即可。

##### 3.创建使用者为test #####

SQL> create user c##test identified by test;
     
    SQL>  alter session set container=PDBORCL;
     
    会话已更改。
     
    SQL> show con_name;
     
    CON_NAME
    ------------------------------
    PDBORCL

##### 4.创建真正的用户 #####

SQL> startup;
    插接式数据库已打开。
    SQL> create user test identified by test default tablespace users temporary tablespace temp;
     
    用户已创建。
     
    SQL> grant create user,drop user,alter user,create any view,connect,resource,dba,create session,create any sequence to test ;
     
    授权成功。

##### 5.修改plsql登录配置 #####

E:\\java\\Orcal\_database\\Orcal\\virtual\\product\\12.1.0\\dbhome\_1\\network\\admin\\tnsnames.ora文件中添加

ORCLPDB =
      (DESCRIPTION =
        (ADDRESS = (PROTOCOL = TCP)(HOST = localhost)(PORT = 1521))
        (CONNECT_DATA =
          (SERVER = DEDICATED)
          (SERVICE_NAME = ORCLPDB)
        )
      )

##### 6.修改用户 #####

语法\[更改用户\]: alter user C\#\#用户名 identified by 口令\[改变的口令\];

例子： alter user c\#\#test identified by 123456;

##### 7.删除用户 #####

语法：drop user C\#\#用户名;  
  
例子：drop user c\#\#test;  
  
若用户拥有对象，则不能直接删除，否则将返回一个错误值。指定关键字cascade,可删除用户所有的对象，然后再删除用户。

##### 7.撤销权限 #####

语法： revoke connect, resource from c\#\#用户名;

列子： revoke connect, resource from c\#\#test;

##### 8.plsq客户端登录 #####

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##### 9.创建用户 #####

create user 用户名 identified by 口令\[即密码\]；  
  
例子： create user c\#\#court identified by court;

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[70 2]: https://img-blog.csdn.net/20180619195103294?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25hbmRhbzE1OA==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70
[70 3]: https://img-blog.csdn.net/20180619195307659?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25hbmRhbzE1OA==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70
[70 4]: https://img-blog.csdn.net/20180619200159237?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L25hbmRhbzE1OA==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70