oracle创建pdb
create pluggable database testpdb admin user tjy identified by root;
show pdbs;
alter session set container=testpdb;
select open_mode from v$database;
alter database open;
create pluggable database testpdb admin user tjy identified by root;
show pdbs;
alter session set container=testpdb;
select open_mode from v$database;
alter database open;