Oracle12C 用戶建立、修改、受權、刪除、登陸等操做

1.以系統用戶命令行登陸： sqlplus sys/sys as sysdba; 2. 確認選擇CDB select name,cdb from v$database;   col pdb_name for a30 select pdb_id,pdb_name,dbid,status,creation_scn from dba_pdbs; select con_id,dbid,NAME,OPEN_

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