Oracle 12c 中的dba_pdb_history 视图

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Oracle 12c 中的dba_pdb_history 视图

Oracle 12c 中通过查询dba_pdb_hostory视图，可以了解PDB数据库的一些信息。

SQL> desc dba_pdb_history;
 名称   (类型等信息省略...）
 ----------------------------

 PDB_NAME
 PDB_ID
 PDB_DBID
 PDB_GUID
 OP_SCNBAS
 OP_SCNWRP
 OP_TIMESTAMP
 OPERATION
 DB_VERSION
 CLONED_FROM_PDB_NAME
 CLONED_FROM_PDB_DBID
 CLONED_FROM_PDB_GUID
 DB_NAME
 DB_UNIQUE_NAME
 DB_DBID
 CLONETAG
 DB_VERSION_STRING

通过下面的查询语句，可以查看PDB数据库的名字、操作等。

SQL> alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss';

会话已更改。

SQL> col pdb_name format a10;
SQL> col db_name format a10;
SQL> col db_unique_name format a20;
SQL> col db_version_string format a20;
SQL> select pdb_name,pdb_id,pdb_dbid,pdb_guid,OP_TIMESTAMP,operation,
  2  db_version,db_name,db_unique_name,db_dbid,db_version_string
  3  from dba_pdb_history order by OP_TIMESTAMP;

SQL> col pdb_name format a30;
SQL> select pdb_name, status from cdb_pdbs;

PDB_NAME                       STATUS
------------------------------ ----------
BEANPDB                        NORMAL
PDB$SEED                       NORMAL

SQL> SELECT con_id,NAME,OPEN_MODE,restricted from v$PDBS;

    CON_ID NAME                 OPEN_MODE  RES
---------- -------------------- ---------- ---
         2 PDB$SEED             READ ONLY  NO
         3 BEANPDB              READ WRITE YES

（完）