管理多组用户环境
多租户架构使Oracle数据库可以作为多租户容器数据库(CDB)运行,该数据库包括零个,一个或多个客户创建的可插拔数据库(PDB);


一、创建和配置CDB
#######create database
step1>确定ORACLE_SID
export ORACLE_SID=mynewdb
step2>环境变量配置
step3>数据库管理验证,密码文件创建
step4>创建初始化参数文件

db_name='ming'         ###must be
memory_target=512M
processes = 150
db_block_size=8192
db_domain=''
db_recovery_file_dest='/u01/app/oracle/flash_recovery_area'
db_recovery_file_dest_size=2G
diagnostic_dest='/u01/app/oracle/'
dispatchers='(PROTOCOL=TCP) (SERVICE=ORCLXDB)'
open_cursors=300
remote_login_passwordfile='EXCLUSIVE'
undo_tablespace='UNDOTBS1'
control_files = (/u01/app/oracle/ora_control1.ctl, /u01/app/oracle/ora_control2)
compatible ='12.0.0'

step5>连接到实例
sqlplus / nolog
SQL>conn /as sysdba

step6>创建参数文件(确保参数文件的目录都已经创建)
SQL> create spfile from pfile;

step7>启动实例
SQL> startup nomount;

step8>使用create database 创建CDB

#########方法一:使用OMF(oracle Managed files)
需要配置参数db_create_file_dest,enable_pluggable_database
alter system set db_create_file_dest='/u01/app/oracle/oradata';
alter system set enable_pluggable_database=true scope=spfile;
####

CREATE DATABASE ming
USER SYS IDENTIFIED BY 123456
USER SYSTEM IDENTIFIED BY 123456
EXTENT MANAGEMENT LOCAL
DEFAULT TABLESPACE users
DEFAULT TEMPORARY TABLESPACE temp
UNDO TABLESPACE undotbs1
ENABLE PLUGGABLE DATABASE
   SEED
   SYSTEM DATAFILES SIZE 125M AUTOEXTEND ON NEXT 10M MAXSIZE UNLIMITED
   SYSAUX DATAFILES SIZE 100M;

#######配置per环境变量
SQL> @?/rdbms/admin/catcdb.sql
######环境变量配置
export PATH=$ORACLE_HOME/perl/bin:$PATH
export PERL5LIB=$ORACLE_HOME/perl/lib/5.14.1:$ORACLE_HOME/perl/lib/site_perl/5.14.1/x86_64-linux-thread-multi
####note
12.1是sql的方式调用 n
12.2全新改版,使用perl脚本封装

#######生成日志
SQL> host perl -I &&rdbms_admin &&rdbms_admin_catcdb --logDirectory &&1 --logFilename &&2

#######CDB创建完成


二、创建和删除PDB
方法一:创建PDB
CDB处于读/写模式,当前容器是CDB根目录、当前用户具有create pluggable database 系统特权

step1>确保在容器的跟目录
SELECT SYS_CONTEXT ('USERENV', 'CON_NAME') FROM DUAL;
step2>运行创建语句
CREATE PLUGGABLE DATABASE salespdb ADMIN USER salesadm IDENTIFIED BY 123456;

CREATE PLUGGABLE DATABASE salespdb ADMIN USER salesadm IDENTIFIED BY password ROLES =(DBA);###方法二
CREATE PLUGGABLE DATABASE salespdb ADMIN USER salesadm IDENTIFIED BY password
  STORAGE (MAXSIZE 2G)
  DEFAULT TABLESPACE sales
    DATAFILE '/disk1/oracle/dbs/salespdb/sales01.dbf' SIZE 250M AUTOEXTEND ON
  PATH_PREFIX = '/disk1/oracle/dbs/salespdb/'
  FILE_NAME_CONVERT = ('/disk1/oracle/dbs/pdbseed/', '/disk1/oracle/dbs/salespdb/');      #####方法三
方法二:unplug/plug
unplug:
alter pluggable database test
unplug into 'path/test.xml';

plug:
create pluggable database my_pdb
using 'path/test.xml';




######删除数据库软件
图形化界面:
路径:
software + db


DB :
DBCA   ---delete database

SQL>
mount;
alter  session distcitxxxx;(drop)
drop database;
show database name;

数据库文件,参数文件,控制文件都删除;
rman target /
drop database include  xxx;
备份,归档,数据

software:
图形化:
命令:
rm -rf $ORACLE_BASE
/usr/local/bin/
/etc/ora*

 oraInst.loc  oratabs
















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