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  • Oracle 12c pdb自动启动

    DB Pluggable Database是12c中扛鼎的一个新特性, 但是对于CDB中的PDB,默认启动CDB时不会将所有的PDB带起来,这样我们就需要手动alter pluggable database ALL OPEN;

    例如:

    SQL> shutdown immediate;
    Database closed.
    Database dismounted.
    ORACLE instance shut down.
    SQL> 
    SQL> startup ;
    ORACLE instance started.
    
    Total System Global Area 1419685888 bytes
    Fixed Size                  2288344 bytes
    Variable Size             536872232 bytes
    Database Buffers          872415232 bytes
    Redo Buffers                8110080 bytes
    Database mounted.
    Database opened.
    SQL> select con_id,name,open_mode from v$pdbs;
    
        CON_ID NAME                           OPEN_MODE
    ---------- ------------------------------ ----------
             2 PDB$SEED                       READ ONLY
             3 MACC                           MOUNTED

    可以通过添加Trigger的形式来客制化startup时自动将PDB OPEN:

    CREATE TRIGGER open_all_pdbs
       AFTER STARTUP
       ON DATABASE
    BEGIN
       EXECUTE IMMEDIATE 'alter pluggable database all open';
    END open_all_pdbs;
    /
    
    Trigger created.
    
    SQL> shutdown immediate;
    Database closed.
    Database dismounted.
    ORACLE instance shut down.
    SQL> 
    SQL> startup;
    ORACLE instance started.
    
    Total System Global Area 1419685888 bytes
    Fixed Size                  2288344 bytes
    Variable Size             536872232 bytes
    Database Buffers          872415232 bytes
    Redo Buffers                8110080 bytes
    Database mounted.
    Database opened.
    SQL> select con_id,name,open_mode from v$pdbs;
    
        CON_ID NAME                           OPEN_MODE
    ---------- ------------------------------ ----------
             2 PDB$SEED                       READ ONLY
             3 MACC                           READ WRITE
    
    NOTE: dependency between database MAC and diskgroup resource ora.DATADG.dg is established
    alter pluggable database all open
    Sun Jul 07 01:40:59 2013
    This instance was first to open pluggable database MACC (container=3)
    Opening pdb MACC (3) with no Resource Manager plan active
    Pluggable database MACC opened read write
    Completed: alter pluggable database all open
    Starting background process CJQ0

    使用SYS用户创建如下触发器即可:

    conn / as sysdba
    
    CREATE TRIGGER open_all_pdbs
       AFTER STARTUP
       ON DATABASE
    BEGIN
       EXECUTE IMMEDIATE 'alter pluggable database all open';
    END open_all_pdbs;
    /
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  • 原文地址:https://www.cnblogs.com/wzihan/p/12992385.html
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