oracle 12c pdb开启和关闭，及设置开机自启动

//开启数据库

sqlplus / as sysdba; //登录连接CDB，默认是root container;
startup; //open 模式，但此时的pdb模式是mounted，需要手工开启
alter session set container=testpdb1; //切换到某个pdb
alter pluggable database open; //开启选定的pdb
alter pluggable database all open; //开启全部pdb

//关闭数据库

alter pluggable database all close; //关闭所有dpb

alter session set container=testpdb1; //切换到某个pdb
shutdown immediate；

alter session set container = CDB$ROOT; //切换到cdb
shutdown immediate;

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

使用SYS用户创建如下触发器即可：

CREATE TRIGGER open_all_pdbs
AFTER STARTUP
ON DATABASE
BEGIN
EXECUTE IMMEDIATE 'alter pluggable database all open';
END open_all_pdbs;