12c pdb基础

手工创建cdb和pdb
为准备12c ocp升级考试

一，手工创建数据库，首先，应该创建好相应的目录，编写相应的参数文件，创建密码文件等，此处略。

以下是创建数据库的脚本

CREATE DATABASE prod

USER SYS IDENTIFIED BY oracle

USER SYSTEM IDENTIFIED BY oracle

LOGFILE GROUP 1 ('/u01/app/oracle/oradata/prod/redo01a.log') SIZE 100M BLOCKSIZE 512,

GROUP 2 ('/u01/app/oracle/oradata/prod/redo02a.log') SIZE 100M BLOCKSIZE 512,

GROUP 3 ('/u01/app/oracle/oradata/prod/redo03a.log') SIZE 100M BLOCKSIZE 512

MAXLOGHISTORY 100

MAXLOGFILES 16

MAXLOGMEMBERS 5

MAXDATAFILES 1024

CHARACTER SET ZHS16GBK

NATIONAL CHARACTER SET AL16UTF16

EXTENT MANAGEMENT LOCAL

DATAFILE '/u01/app/oracle/oradata/prod/system01.dbf'

SIZE 500M REUSE AUTOEXTEND ON NEXT 10240K MAXSIZE UNLIMITED

SYSAUX DATAFILE '/u01/app/oracle/oradata/prod/sysaux01.dbf'

SIZE 300M REUSE AUTOEXTEND ON NEXT 10240K MAXSIZE UNLIMITED

DEFAULT TABLESPACE users

DATAFILE '/u01/app/oracle/oradata/prod/users01.dbf'

SIZE 500M REUSE AUTOEXTEND ON MAXSIZE UNLIMITED

DEFAULT TEMPORARY TABLESPACE tempts1

TEMPFILE '/u01/app/oracle/oradata/prod/temp01.dbf'

SIZE 100M REUSE AUTOEXTEND ON NEXT 640K MAXSIZE UNLIMITED

UNDO TABLESPACE undotbs1

DATAFILE '/u01/app/oracle/oradata/prod/undotbs01.dbf'

SIZE 200M REUSE AUTOEXTEND ON NEXT 5120K MAXSIZE UNLIMITED

ENABLE PLUGGABLE DATABASE

seed

file_name_convert=('/u01/app/oracle/oradata/prod/','/u01/app/oracle/oradata/seed')

USER_DATA TABLESPACE usertbs

DATAFILE '/u01/app/oracle/oradata/seed/users01.dbf'

SIZE 200M REUSE AUTOEXTEND ON MAXSIZE UNLIMITED;

加粗部分决定了要创建的数据库是否为container database，更详细的语法请参考官方文档

执行以下脚本创建数据字典、视图等

@?/rdbms/admin/catcdb.sql、catproc.sql、catalog.sql

官方文档中标明要执行catcdb.sql脚本，但是，在rdbms/admin目录下却没有发现此脚本

二，配置em express

exec DBMS_XDB_CONFIG.SETHTTPPORT(http_port_number);

exec DBMS_XDB_CONFIG.SETHTTPSPORT(https_port_number);
http://database_hostname:http_port_number/em/ https://database_hostname:https_port_number/em/
三，创建pdb

在用dbca创建数据库的时候，就可以选择，是否创建为container数据库、pdb的数量、pdb的通用名称等。

以下是数据库创建完成后，如何用命令行创建新的pdb，语句中涉及比较常见的语法。

1.create pluggable database from the seed

SQL> create pluggable database pdb5 admin user pdbadmin identified by oracle storage(maxsize 5g max_shared_temp_size 200m)

----maxsize specifies that the storage used by all tablespaces that belong to the PDB must not exceed 10 gigabytes

----max_shared_temp_size specifies that the storage used by the PDB sessions in the shared temporary tablespace must not exceed 200 megabytes.

default tablespace users datafile '/u01/app/oracle/oradata/orcl/pdb5/pdb5_user01.dbf' size 200m autoextend on

file_name_convert=('/u01/app/oracle/oradata/orcl/pdbseed','/u01/app/oracle/oradata/orcl/pdb5');

Pluggable database created.

更详尽语法可参考官方文档

2.create pluggable database from the local cloning

SQL> alter pluggable database pdb close;

Pluggable database altered.

SQL> alter pluggable database pdb open read only;

Pluggable database altered.

SQL> create pluggable database pdb1 from pdb file_name_convert=('/u01/app/oracle/oradata/orcl/pdb','/u01/app/oracle/oradata/orcl/pdb1');

Pluggable database created.

3.create pluggable database from the unplugged pdb

SQL> alter pluggable database pdb1 close;

Pluggable database altered.

SQL> alter pluggable database pdb1 unplug into '/u01/app/oracle/oradata/orcl/pdb1/pdb1.xml';

Pluggable database altered.

SQL> drop pluggable database pdb1;

Pluggable database dropped.

[oracle@test pdb1]$ pwd

/u01/app/oracle/oradata/orcl/pdb1

[oracle@test pdb1]$ ls

pdb1.xml pdb_users01.dbf sysaux01.dbf system01.dbf

[oracle@test pdb1]$ mv * ..

SQL> create pluggable database pdb1 using '/u01/app/oracle/oradata/orcl/pdb1.xml' source_file_name_convert=('/u01/app/oracle/oradata/orcl/pdb1/','/u01/app/oracle/oradata/orcl/') file_name_convert=('/u01/app/oracle/oradata/orcl/','/u01/app/oracle/oradata/orcl/pdb1/') move storage(maxsize 5g max_shared_temp_size 200m);

Pluggable database created.

4.create pluggable database from the non-cdb

原数据库:

SQL> alter database open read only;

Database altered.

SQL> exec dbms_pdb.describe(PDB_DESCR_FILE=>'/u01/app/oracle/oradata/orcl/pdb2/pdb2.xml');

PL/SQL procedure successfully completed.

SQL> shutdown immediate

Database closed.

Database dismounted.

ORACLE instance shut down.

新数据库：

SQL> create pluggable database prod using '/u01/app/oracle/oradata/orcl/pdb2/pdb2.xml' file_name_convert=('/u01/app/oracle/oradata/prod/','/u01/app/oracle/oradata/orcl/pdb2/') copy;

Pluggable database created.

此时，新创建的pdb为mount状态，须执行以下步骤才能打开数据库

SQL> alter session set container=prod;

Session altered.

SQL> @$ORACLE_HOME/rdbms/admin/noncdb_to_pdb.sql
----在打开新添加的pdb之前，必须执行此脚本，执行此脚本会需要一些时间

SQL> alter session set container=cdb$root;

Session altered.

SQL> alter pluggable database prod open;

Pluggable database altered.

四，其他相关

SQL> SELECT SYS_CONTEXT ('USERENV', 'CON_NAME') FROM DUAL;

SYS_CONTEXT('USERENV','CON_NAME')

--------------------------------------------------------------------------------

CDB$ROOT

SQL> show con_name

CON_NAME

------------------------------

PDB

SQL> show con_id

CON_ID

------------------------------

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