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    oracle11g dataguard安装实施

    Oracle DataGuard 实施 1.环境准备 1.1 修改主备机hosts文件 vi /etc/hosts 128.160.11.84    wang 128.160.11.218  dg2 1.2 修改(添加)主备机listener.ora和tnsnames.ora文件 vi $ORACLE_HOME/network/admin/listener.ora SID_LIST_LISTENER =         (SID_LIST =           (SID_DESC =                 (SID_NAME = softdb)                 (ORACLE_HOME = /u01/app/oracle/product/11.2.0/db_1/)           )         ) LISTENER =   (DESCRIPTION_LIST =     (DESCRIPTION =       (ADDRESS = (PROTOCOL = TCP)(HOST = wang)(PORT = 1521))       (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))     )   ) ADR_BASE_LISTENER = /u01/app/oracle vi $ORACLE_HOME/network/admin/tnsnames.ora SOFTPRI =   (DESCRIPTION =     (ADDRESS = (PROTOCOL = TCP)(HOST = wang)(PORT = 1521))     (CONNECT_DATA =       (SERVER = DEDICATED)       (SERVICE_NAME = softdb)     )   ) SOFTSTD =   (DESCRIPTION =     (ADDRESS = (PROTOCOL = TCP)(HOST = dg2)(PORT = 1521))     (CONNECT_DATA =       (SERVER = DEDICATED)       (SERVICE_NAME = softdb)     )   ) 1.3 确定主备机parameter/control/data/log/archivelog file 的路径 audit_file_dest='/u01/app/oracle/admin/softdb/adump' 1.4 设置主库强制写日志 SQL> select force_logging from v$database; FOR --- NO SQL> alter database force logging; Database altered. SQL> select force_logging from v$database; FOR --- YES 1.5 设置主库归档模式 SQL> archive log list; SQL> shutdown immediate; SQL> startup mount; SQL> alter database archivelog; SQL> alter database open; SQL> archive log list; Database log mode              Archive Mode Automatic archival             Enabled Archive destination            /u01/app/oracle/product/11.2.0/db_1//dbs/arch Oldest online log sequence     175 Next log sequence to archive   177 Current log sequence           177 2. 产生用于建立Standby库的全备份集及控制文件 2.1 创建并修改主库参数文件pfile SQL> shutdown immediate; SQL> create pfile from spfile; 修改initsoftdb.ora vi $ORACLE_HOME/db

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    部署Skype for Business Server 2015 数据库SQL 高可用AlwayOn

    原文链接:http://blogs.technet.com/b/uclobby/archive/2015/05/08/deploying-sql-server-alwayson-availability-group-for-skype-for-business-server-2015.aspx Deploying SQL Server AlwaysOn Availability Group for Skype for Business Server 2015      In Lync Server 2013, there were requests regarding an alternative to SQL Mirroring for SQL Server High Availability. This was related to the fact that SQL Mirroring was marked as a feature to be removed in future SQL Server versions: This feature will be removed in a future version of Microsoft SQL Server. Avoid using this feature in new development work, and plan to modify applications that currently use this feature. Use AlwaysOn Availability Groups instead. in SQL Server 2014 - Database Mirroring (SQL Server) - https://msdn.microsoft.com/en-us/library/ms189852.aspx In Lync Server 2013, it was common to have SQL Server High Availability using SQL Mirroring. The reason for this was that Topology Builder did all the hard work for us. Another supported scenario was to use SQL failover clustering, but in this case we need to manually deploy it: Database software support in Lync Server 2013 https://technet.microsoft.com/en-us/library/gg398990.aspx The good news is Skype for Business Server 2015 comes with AlwaysOn Availability Groups:

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