ITPub博客

首页 > Linux操作系统 > Linux操作系统 > Oracle9i standby 数据库笔记(zt)

Oracle9i standby 数据库笔记(zt)

原创 Linux操作系统 作者:tolywang 时间:2007-10-23 00:00:00 0 删除 编辑
.
简单介绍
说明:Oracle9i 数据库的 Data Guard 特性确保对数据进行完整的保护,是 Oracle 9i 的一个关键特性之一。Data Guard 可以创建物理的 Standby 数据库,也可以创建逻辑的Standby数据库,还可以混合使用,灵活性比较强.这个文档是Fenng练习时候记下来的东西,谈不上是什么心得。这不过是一份安装过程中的笔记而已,大约写于一年以前,如果对Standby机制的了解有更高的期望,或者想得到关于Oracle数据库的data guard 和Standby的更多信息,请参考官方的文档。

系统环境版本信息描述:Windows 2000 专业版 SP3 512M 内存
现有的数据库实例 (Primary)名字:Demo
预创建的Standby数据库实例名字:Pstandby

数据库版本信息:

SQL> SELECT * FROM v$version;
BANNER
----------------------------------------------------------------
Oracle9i Enterprise Edition Release 9.2.0.1.0 - Production
PL/SQL Release 9.2.0.1.0 - Production
CORE 9.2.0.1.0 Production
TNS for 32-bit Windows: Version 9.2.0.1.0 - Production
NLSRTL Version 9.2.0.1.0 - Production

准备工作
首先确认Primary数据库是否在归档模式下

SQL> SHOW user
USER is "SYS"
SQL>
SQL> ARCHIVE log list
Database log mode Archive Mode
Automatic archival Enabled
Archive destination d:oracleoradatademoarchive
Oldest online log sequence 42
Next log sequence to archive 44
Current log sequence 44

如果不在归档模式下,调整数据库。首先提交命令修改SPfile:
SQL>ALTER SYSTEM SET log_archive_start=TRUE SCOPE=SPFILE;

然后关闭数据库实例

SQL>SHUTDOWN immediate;

备份数据库

SQL>STARTUP MOUNT
SQL>ALTER DATABASE ARCHIVELOG;
SQL>ALTER DATABASE OPEN;
SQL>SHUTDOWN IMMEDIATE

备份

1. Primary Database 需要做的准备工作


1.1 激活 Forced Logging
SQL> ALTER DATABASE FORCE LOGGING;

1.2 设置本地归档目标
SQL> ALTER SYSTEM SET log_archive_dest_1='LOCATION=D:oracleoradataDEMOArchive' SCOPE=BOTH;

此操作直接生效

2.创建物理的Standby数据库


2.1 标记出Primary数据库的数据文件
SQL> SELECT NAME FROM v$datafile;
NAME
-----------------------------------------------------
D:ORACLEORADATADEMOSYSTEM01.DBF
D:ORACLEORADATADEMOUNDOTBS01.DBF
D:ORACLEORADATADEMOCWMLITE01.DBF
D:ORACLEORADATADEMODRSYS01.DBF
D:ORACLEORADATADEMOEXAMPLE01.DBF
D:ORACLEORADATADEMOINDX01.DBF
D:ORACLEORADATADEMOODM01.DBF
D:ORACLEORADATADEMOTOOLS01.DBF
D:ORACLEORADATADEMOUSERS01.DBF
D:ORACLEORADATADEMOXDB01.DBF
D:ORACLEORADATADEMOOEM_REPOSITORY.DBF
11 rows selected.
SQL>

2.2 关闭Instance 拷贝数据文件到既定目的地
SQL> SHUTDOWN IMMEDIATE;

2.3 为Standby 数据库创建控制文件
SQL> ALTER DATABASE CREATE STANDBY CONTROLFILE
AS 'C:DataGuardPstandbyDEMODEMOSTANDBY.CTL';

要注意这个控制文件的名字不要和Primary的控制文件名字重复

2.4 为Standby数据库准备初始化参数文件名字
SQL> CREATE PFILE='C:DataGuardPstandbyDEMOinitpstandby' FROM SPFILE;

2.5 设定初始化Physical Standby Database参数
*.aq_tm_processes=1
*.background_dump_dest='D:oracleadminDEMObdump'
*.compatible='9.2.0.0.0'
*.control_files='C:DataGuardPstandbyDEMODEMOSTANDBY.CTL'
*.core_dump_dest='D:oracleadminDEMOcdump'
*.db_block_size=8192
*.db_cache_size=19922944
*.db_domain=''
*.db_file_multiblock_read_count=32
*.db_name='DEMO'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=DEMOXDB)'
*.fast_start_mttr_target=300
*.hash_area_size=1048576
*.hash_join_enabled=TRUE
*.instance_name='pstandby'
*.java_pool_size=20971520
*.job_queue_processes=10
*.large_pool_size=7340032
*.log_archive_dest_1='location=d:oracleoradatademoarchive'
*.log_archive_start=TRUE
*.open_cursors=300
*.optimizer_mode='FIRST_ROWS'
*.pga_aggregate_target=17825792
*.processes=150
*.query_rewrite_enabled='TRUE'
*.remote_login_passwordfile='EXCLUSIVE'
*.shared_pool_size=33554432
*.sort_area_size=1048576
*.star_transformation_enabled='TRUE'
*.timed_statistics=TRUE
*.undo_management='AUTO'
*.undo_retention=10800
*.undo_tablespace='UNDOTBS1'
*.user_dump_dest='D:oracleadminDEMOudump'

lock_name_space=pstandby
standby_file_management=AUTO
remote_archive_enable=TRUE
standby_archive_dest='C:DataGuardPstandbyDEMOArchive'
db_file_name_convert=('D:oracleoradataDEMO', 'C:DataGuardPstandbyDEMO')
log_file_name_convert=('D:oracleoradataDEMO', 'C:DataGuardPstandbyDEMO')
log_archive_dest_1=('LOCATION=C:DataGuardPstandbyDEMOArchive')

整个操作的过程中,容易出现错误的地方几乎都集中在此处。必须认真仔细的对待这个文件。标记为黑色的地方是需要进行修改的。

2.6 创建一个Windows服务
WINNT> oradim -NEW -SID Pstandby -STARTMODE manual

2.7 Create a Server Parameter File for the Standby Database
可参考执行如下操作:

C:>SET oracle_sid=pstandby
C:>SQLPLUS /nolog
SQL> CONNECT / as sysdba
SQL> CREATE SPFILE FROM PFILE='C:DataGuardPstandbyDEMOinitPstandby.ora';

2.8 启动物理Standby数据库
C:>set oracle_sid=pstandby
C:>sqlplus /nolog
SQL> connect / as sysdba
SQL> STARTUP NOMOUNT;
SQL> ALTER DATABASE MOUNT STANDBY DATABASE;

2.9 在Standby数据库上,初始化Log Apply 服务
SQL> ALTER DATABASE RECOVER MANAGED STANDBY DATABASE DISCONNECT FROM SESSION;

2.10 激活到物理Standby数据库的归档
SQL> ALTER SYSTEM SET LOG_ARCHIVE_DEST_2='SERVICE=Pstandby' SCOPE=BOTH;
SQL> ALTER SYSTEM SET LOG_ARCHIVE_DEST_STATE_2=ENABLE SCOPE=BOTH;

2.11 启动远程归档
SQL> ALTER SYSTEM ARCHIVE LOG CURRENT;

3.安装完的的验证


3.1在database, 查询V$ARCHIVED_LOG
(其实也可以直接到相关目录下查看Log是否创建):

SQL> SELECT SEQUENCE#, FIRST_TIME, NEXT_TIME
2 FROM V$ARCHIVED_LOG ORDER BY SEQUENCE#;
SEQUENCE# FIRST_TIME NEXT_TIME
---------- ---------- ----------
38 23-7? -02 23-7? -02
39 23-7? -02 23-7? -02
40 23-7? -02 23-7? -02
41 23-7? -02 23-7? -02
42 23-7? -02 23-7? -02

3.2 在Primary数据库上,归档当前的Log
SQL> ALTER SYSTEM ARCHIVE LOG CURRENT;

3.3 验证是否收到
SQL> SELECT SEQUENCE#, FIRST_TIME, NEXT_TIME
2> FROM V$ARCHIVED_LOG ORDER BY SEQUENCE#;
SEQUENCE# FIRST_TIME NEXT_TIME
---------- ---------- ----------
38 23-7? -02 23-7? -02
39 23-7? -02 23-7? -02
40 23-7? -02 23-7? -02
41 23-7? -02 23-7? -02
42 23-7? -02 23-7? -02
43 23-7? -02 23-7? -02

3.4 验证是否新的归档Redo日志已经被应用
SQL> SELECT sequence#, applied FROM v$archived_log ORDER BY sequence#;
SEQUENCE# APP
---------- ---
38 YES
39 YES
40 YES
41 YES
42 YES
43 YES

OK.表明我们还是成功的。暂时告一段落。

附加内容
primary数据库的Pfile内容

*.aq_tm_processes=1
*.background_dump_dest='D:oracleadminDEMObdump'
*.compatible='9.2.0.0.0'
*.control_files='D:oracleoradataDEMOCONTROL01.CTL',
   'D:oracleoradataDEMOCONTROL02.CTL','D:oracleoradataDEMOCONTROL03.CTL'
*.core_dump_dest='D:oracleadminDEMOcdump'
*.db_block_size=8192
*.db_cache_size=19922944
*.db_domain=''
*.db_file_multiblock_read_count=32
*.db_name='DEMO'
*.dispatchers='(PROTOCOL=TCP) (SERVICE=DEMOXDB)'
*.fast_start_mttr_target=300
*.hash_area_size=1048576
*.hash_join_enabled=TRUE
*.instance_name='DEMO'
*.java_pool_size=20971520
*.job_queue_processes=10
*.large_pool_size=7340032
*.log_archive_dest_1='location=d:oracleoradatademoarchive'
*.log_archive_dest_2='SERVICE=PSTANDBY'
*.log_archive_dest_state_2='ENABLE'
*.log_archive_start=TRUE
*.open_cursors=300
*.optimizer_mode='FIRST_ROWS'
*.pga_aggregate_target=17825792
*.processes=150
*.query_rewrite_enabled='TRUE'
*.remote_login_passwordfile='EXCLUSIVE'
*.shared_pool_size=33554432
*.sort_area_size=1048576
*.star_transformation_enabled='TRUE'
*.timed_statistics=TRUE
*.undo_management='AUTO'
*.undo_retention=10800
*.undo_tablespace='UNDOTBS1'
*.user_dump_dest='D:oracleadminDEMOudump'

来自 “ ITPUB博客 ” ,链接:http://blog.itpub.net/35489/viewspace-84969/,如需转载,请注明出处,否则将追究法律责任。

请登录后发表评论 登录
全部评论
Oracle , MySQL, SAP IQ, SAP HANA, PostgreSQL, Tableau 技术讨论,希望在这里一起分享知识,讨论技术,畅谈人生 。

注册时间:2007-12-10

  • 博文量
    5595
  • 访问量
    13384464