failover and failback

OverviewIn the RAC environment to configure Ogg, in order to achieve the RAC node failure, Ogg can automatically failover to the normal node, to ensure that two points:1. ogg's CHECKPOINT,TRAIL,BR file is placed on the shared cluster file system, and the RAC nodes can access the2. Cluster software is required to monitor the Ogg process and automatically restart Ogg (failover) on the normal node in the event

can find that the master server and the replica server have exactly the same time, while the replica server also has a WIN7-01 of this virtual machine. 650) This. width = 650; "Title =" clip_image016 "style =" border-top: 0px; border-Right: 0px; border-bottom: 0px; border-left: 0px; display: inline "border =" 0 "alt =" clip_image016 "src =" http://img1.51cto.com/attachment/201407/10/8946015_1404969866PzS4.png "" 644 "Height =" 409 "/> 650) This. width = 650; "Title =" clip_image017 "style ="

15.3 Accessing an AlwaysOn failover cluster15.3.1 Configuring SQL Server InstancesSimilar to instances where the local computer is installed independently, instances of AlwaysOn failover clusters also need to be configured with SQL Server Configuration Manager.In this example, an AlwaysOn failover cluster is installed as a named instance, so you need to configure

Javaoraclethin and oci Connection Methods for multi-database failover I. thin mode where URL is jdbc: oracle: thin: @ (DESCRIPTION (LOAD_BALANCEon) (ADDRESS (PROTOCOLTCP) (HOST127.0.0.1) (PORT1521) (ADDRESS (PROTOCOLTCP) (HOST10.132.111.14) (PORT1521) (CON Java oracle thin and oci Connection Methods for multi-database failover I. thin mode where URL is jdbc: oracle: thin: @ (DESCRIPTION = (LOAD_BALANCE = on

Reference and: "Think Twice" this book The failover of physical standby Note Some points: After 1 failover, the original primary database is no longer part of the data guard configuration by default. 2 in most cases, other logical/physical standby databases are not directly involved in the failover process, so these databases do not require any action. 3 in som

Tags: Database sql ServerDetermine the quorum modeWhen configuring a failover cluster, if the cluster nodes are odd, use the majority node, and if the cluster nodes are even, use the majority node and file share (Configure a shared folder where each node can access the shared folder)Because they are even nodes (SQL01 and SQL02), select Majority node and file share mode2. Install failover cluster, both SQL01

Tags: open roc sha execution with BIND complete after rest organizationSQL Server Failover cluster+ ALwaysOn (three)We introduced the configuration of SQL Server Failover cluster in the previous two articles, and described the previous conditions for configuring the new AlwaysOn node, and today we mainly describe the detailed configuration of always. As we mentioned earlier, if you want to implement SQL Ser

MySQL high availability solution: MHA-based automatic failover ClusterComparison of common high availability solutions for MySQL (from the official manual)Only MySQL Cluster and DRBD + Heartbeat are available for automatic database failover. These two HA solutions do not depend on Replication.However, the configuration and maintenance of MySQL Cluster (NDB) is complex, and is not as stable and easy to use a

firewall. The Out interface is 192.168.1.1.650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/5A/3B/wKiom1T60H7hGbPJAABt_UcSYEw364.jpg "title=" 8.9. PNG "alt=" Wkiom1t60h7hgbpjaabt_ucsyew364.jpg "/>Figure 8.77. Configure NAT translation on the main firewall, inside convert all, outside interface to do pnat conversion.650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/5A/37/wKioL1T60arxwIiBAAHflFF0LyU228.jpg "title=" 8.10. PNG "alt=" Wkiol1t60arxwiibaahflff0lyu228.jpg "/>Figure 8

://www.cnblogs.com/killkill/archive/2009/07/17/1525733.html Http://dufei.blog.51cto.com/382644/84645 Http://www.cnblogs.com/wangdong/archive/2008/10/24/1318740.html Ii. database image: Database image: The advantage is that the system can automatically detect master server faults and automatically switch to the backup storage. The disadvantage is that the configuration is complex and the data in the image database is invisible (in SQL Server Management studio, only the image database is in the im

VMware Microsoft's failover cluster testing under virtual environmentHost Configurationtwo win2008 R2 Enterprise Edition Servertest01 public10.10.1.146 Private 172.16.0.1test02 public10.10.1.147 Private 172.16.0.2Storein the EMC storage divides two LUNs, one for cluster quorum disks and one for storing data. in the two LUNs created in EMC storage 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/59/BC/wKiom1Tdj8WwKicBAAKFbcA_C

Before creating an SQL Server 2000 failover cluster, you must Configure Microsoft cluster service (MSC) and use the Cluster Administrator in Microsoft Windows NT4.0 or Windows 2000 to create at least one cluster disk resource. Before running the SQL Server installer, log on to the Cluster Administrator to locate the cluster drive, because this information is required to create a Failover cluster. Only SQL S

Oracle 11g introduces scan ip. However, in the absence of DNS, the client connection to RAC is still using oracle 10 Gb. Configure failover in tnsname. ora of the client.ORCL =(DESCRIPTION =(ADDRESS_LIST =(LOAD_BALANCE = yes)(ADDRESS = (PROTOCOL = TCP) (HOST = 192.168.3.203) (PORT = 1521 ))(ADDRESS = (PROTOCOL = TCP) (HOST = 192.168.3.204) (PORT = 1521 ))(ADDRESS = (PROTOCOL = TCP) (HOST = 192.168.3.205) (PORT = 1521 )))(CONNECT_DATA =(SERVICE_NAME =

Before creating an SQL Server 2000 failover cluster, you must Configure Microsoft cluster service (MSC) and use the Cluster Administrator in Microsoft Windows NT4.0 or Windows 2000 to create at least one cluster disk resource. Before running the SQL Server installer, log on to the Cluster Administrator to locate the cluster drive, because this information is required to create a Failover cluster. Only SQL S

File Server failover Cluster U Case Requirements How do I configure a failover cluster for a file server? U Knowledge Tips DHCP servers need to use DHCP relay to assign IP addresses across network segments. Because DHCP relies on broadcasts to communicate, and different segments of traffic need to be routed, and routers are isolated broadcasts by default, all of the IP addresses to be assigned across networ

MySQL replication is asynchronous or semi-synchronous. When Master fails, some slave may not receive the latest relay log, which means that each slave may be in a different state. It is trivial to handle these consistency issues manually because you cannot start copying without fixing these issues. However, it is not uncommon to fix these problems manually, which takes one hours or more.One Master one fromIf the schema is a master one from, there will be no part of the slave state behind the lat

Oracle DataGuard Study--dataguard failover caseOracle DG (Dataguard) is now a common database ha configuration policy. By implementing physical Standby and logical Standby, the data redundancy tolerance mechanism can be realized. There is no fast backup support environment when there is a major failure in the main library and no support for the service. in Dg switchover and failover dg The core of implem

Reference and: note the following points for the failover of physical standby: After 1 failover, the original primary database is no longer part of the replicuard configuration by default. 2 in most cases, other logical physical standby databases are not directly involved in the failover process, so these databases do not need to perform any operations. 3. Some S

Use shared folders to implement arbitration disks for failover clusters and cluster ArbitrationUsing shared folders to implement arbitration disks for failover Clusters In the previous blog, we have introduced how to build a Distributed File System (DFS) and how to configure high availability for DFS, on this basis, we will explain how to use DFS as the arbitration disk for our Windows Cluster. I don't know

The following is a detailed analysis of the use of Switchover and Failover in Oracle. For more information, see role switching between the slave uard master-slave database) switchoverSwithchover is generally designed to switch roles, such as upgrading roles. It is usually lossless, that is, there will be no data loss. Executive The following is a detailed analysis of the use of Switchover and Failover in Or