Oracle 12c pdb自动启动

1、Oracle 12c pdb自动启动

PDB 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> 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

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;
/
2、
2、字符切换为 AL32UTF8
shutdown immediate;     //关闭数据库服务器
startup mount;
alter session set sql_trace=true;
alter system enable restricted session;
alter system set job_queue_processes=0;
alter system set aq_tm_processes=0;
alter database open;
alter database character set internal_use utf8;
alter session set sql_trace=false;
shutdown immediate;
startup;SQL> select * fromv$nls_parameters where parameter='NLS_CHARACTERSET';