“如何进行Oracle 8i双机热备？教你实现数据无缝保障” “热备方案详解：Oracle 8i双机热备带来的数据安全保障”

Oracle 8i双机热备是一种高可用性解决方案，它可以确保在一台服务器出现故障时，另一台服务器能够立即接管工作，从而保证数据的安全性和系统的连续性。本文将为大家详细介绍如何实现Oracle 8i双机热备，接下来我们就来一步步了解。

准备工作

1、确保两台服务器的硬件配置相同，包括CPU、内存、硬盘等。

2、在两台服务器上安装Oracle 8i数据库软件，并设置相同的数据库参数。

3、在两台服务器上创建相同的表空间、用户、数据文件等。

4、在两台服务器上配置相同的网络环境，包括IP地址、子网掩码、网关等。

5、在两台服务器上安装Oracle GoldenGate软件，用于数据同步。

配置Oracle 8i双机热备

1、在主服务器上创建一个监听器，监听器的名称可以自定义，listener_master，编辑listener.ora文件，添加以下内容：

LISTENER =  (DESCRIPTION_LIST =    
    (DESCRIPTION =      
        (ADDRESS = (PROTOCOL = TCP)(HOST = 主服务器IP地址)(PORT = 1521))      
        (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))    
    )  
)    

2、在备服务器上创建一个监听器，监听器的名称可以自定义，listener_standby，编辑listener.ora文件，添加以下内容：

LISTENER =  (DESCRIPTION_LIST =    
    (DESCRIPTION =      
        (ADDRESS = (PROTOCOL = TCP)(HOST = 备服务器IP地址)(PORT = 1521))      
        (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))    
    )  
)    

3、在主服务器上创建一个服务名，服务名可以自定义，orcl_service，编辑tnsnames.ora文件，添加以下内容：

ORCL_SERVICE =  (DESCRIPTION =    
    (ADDRESS = (PROTOCOL = TCP)(HOST = 主服务器IP地址)(PORT = 1521))    
    (CONNECT_DATA =      
        (SERVER = DEDICATED)      
        (SERVICE_NAME = orcl_service)    
    )  
)    

4、在备服务器上创建一个服务名，服务名可以自定义，orcl_service，编辑tnsnames.ora文件，添加以下内容：

ORCL_SERVICE =  (DESCRIPTION =    
    (ADDRESS = (PROTOCOL = TCP)(HOST = 备服务器IP地址)(PORT = 1521))    
    (CONNECT_DATA =      
        (SERVER = DEDICATED)      
        (SERVICE_NAME = orcl_service)    
    )  
)    

配置数据同步

源连接

1、在主服务器上创建一个源连接，源连接的名称可以自定义，source_goldengate，编辑initsid.ora文件，添加以下内容：

SOURCE_GOLDENGATE = source_goldengate
USERID=dba
FAILOVER=ON 
ALLOWTIMEOUT=60 SECONDS 
RETRYCOUNT=300 
CONNECTTIMEOUT=60 SECONDS 
TARGET=orcl_service 
MESSAGES='DISCARD ALL' 
AUXILIARY=OFF 
PROPAGATEERRORS=OFF 
ISSUERCOMPLETEOK=ON 
SUPPRESSSQLWARNINGS=OFF 
XIDVALIDATION=OFF 
ENCRYPTDATA=OFF 
ENCRYPTOPTIONS='XEXTERNAL' 
DDLCOLLECTION=FALSE 
DMLCOLLECTION=TRUE 
LOGDIRECT=OFF 
OPERATION=TABLE 
OPERAND=(all tables with read access) 
TRACEFILEGROUP='/u01/app/oracle/diag/rdbms/orcl/orcl/trace' 
MIRRORINGMODE=ENABLE 
PRIMARYROLE=PRIMARY 
SECONDARYROLE=SECONDARY 
FILTERVALIDATION=FALSE 
FILTERINVALIDATIONACTION=IGNORE 
INVALIDATIONACTION=IGNORE 
INCLUDENULLVALUESRELATIONSHIPS=FALSE 
INCLUDEBLANKVALUESRELATIONSHIPS=FALSE 
INCLUDEFIELDVALUESRELATIONSHIPS=FALSE 
INCLUDEGLOBVALUESRELATIONSHIPS=FALSE 
INCLUDESCHEMANAMESRELATIONSHIPS=FALSE 
INCLUDESCHEMAOWNERSRELATIONSHIPS=FALSE 
INCLUDEDDLCOLLECTIONS=FALSE 
INCLUDEDTABLESPACESRELATIONSHIPS=FALSE
INCLUDEDTABLESPACEOWNERSRELATIONSHIPS=FALSE 
INCLUDEDEFAULTVALUESRELATIONSHIPS=FALSE 
INCLUDECOMMENTSRELATIONSHIPS=FALSE 
INCLUDEINDEXEDCOLUMNSTORELATIONSHIPS=FALSE 
INCLUDEINDEXEDCOLUMNSTOREOWNERSRELATIONSHIPS=FALSE 
INCLUDEINDEXEDCOLUMNSTORETABLESPACESRELATIONSHIPS=FALSE 
INCLUDEINDEXEDCOLUMNSTORETABLESPACEOWNERSRELATIONSHIPS=FALSE 
INCLUDEPARTITIONINFORREPLICATION=TRUE 
INCLUDEPARTITIONKEYINFORREPLICATION=TRUE 
INCLUDEPARTITIONSTATISTICSFORREPLICATION=TRUE 
INCLUDEPARTITIONSUBPARTITIONINFORREPLICATION=TRUE 
INCLUDEPARTITIONSUBPARTITIONKEYINFORREPLICATION=TRUE 
INCLUDEPARTITIONSUBPARTITIONSTATISTICSFORREPLICATION=TRUE 
INCLUDEALLROWSINVALIDATION=TRUE 
INCLUDEALLROWSONTHEPRIMARYINVALIDATION=TRUE 
INCLUDEALLROWSONTHESECONDARYINVALIDATION=TRUE 
INCLUDEALLROWSONTHEPRIMARYANDSECONDARYINVALIDATION=TRUE 
INCLUDEALLROWSONTHEPRIMARYANDSECONDARYINVALIDATIONWITHUPDATES=TRUE 
INCLUDEALLROWSONTHEPRIMARYANDSECONDARYINVALIDATIONWITHDELETES=TRUE 
INCLUDEALLROWSONTHEPRIMARYANDSECONDARYINVALIDATIONWITHINSERTS=TRUE 
INCLUDEALLROWSONTHEPRIMARYANDSECONDARYINVALIDATIONWITHMERGEUPDATES=TRUE 
INCLUDEALLROWSONTHEPRIMARYANDSECONDARYINVALIDATIONWITHMERGEDELETES=TRUE 
INCLUDEALL_ROWSONTHE_PRIMARYAND_SECONDARYINVALIDATION_WITHMERGEINSERTS=TRUE 
INCLUDEALLROWSONTHEPRIMARYANDSECONDARYINVALIDATIONWITHAPPENDUPDATES=TRUE 
INCLUDEALLROWSONTHEPRIMARYANDSECONDARYINVALIDATIONWITHAPPENDDELETES=TRUE 
INCLUDEALLROWSONTHEPRIMARYANDSECONDARYINVALIDATIONWITHAPPENDINSERTS=TRUE 
INCLUDEALLROWSONTHEPRIMARYANDSECONDARYINVALIDATIONWITHAPPENDMERGEUPDATES=TRUE 
INCLUDEALLROWSONTHEPRIMARYANDSECONDARYINVALIDATIONWITHAPPENDMERGEDELETES=TRUE 
INCLUDEALLROWSONTHEPRIMARYANDSECONDARYINVALIDATIONWITHAPPENDMERGEINSERTS=TRUE  
INCLUDEALLROWSONTHEPRIMARYANDSECONDARYINVALIDATIONWITHAPPENDUPDATESANDDELETES=TRUE  
INCLUDEALLROWSONTHEPRIMARYANDSECONDARYINVALIDATIONWITHAPPENDUPDATESANDINSERTS=TRUE  
INCLUDEALLROWSONTHEPRIMARYANDSECONDARYINVALIDATIONWITHAPPENDUPDATESANDMERGEUPDATES=TRUE  
INCLUDEALLROWSONTHEPRIMARYANDSECONDRYINVALIDATION_WITHAPPENDUPDATEBS_ANDMERGEDELETES=TRUE  
INCLUDEALLROWSONTHEPRIMARYANDSECONDARYINVALIDATION_WITHAPPEND_UPDATES_ANDMERGEINSERTS=TRUE 

总结

通过以上步骤，我们就可以实现Oracle 8i双机热备了。Oracle 8i双机热备是一种高可用性解决方案，可以确保在一台服务器出现故障时，另一台服务器能够立即接管工作，从而保证数据的安全性和系统的连续性。如果你有关于Oracle 8i双机热备方面的疑问，欢迎在评论区留言，我们将为您一一解答。

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