isp failover

Tags: problem eth delay NEC System Environment file RET Unable to attach load Java Oracle thin and OCI connectivity for failover of multiple databases First, Thin way This method is easy to use and is not uncommon.The URL isjdbc:oracle:thin:@ (description= (Load_balance=on)(Address= (PROTOCOL=TCP) (host=127.0.0.1) (port=1521))(Address= (PROTOCOL=TCP) (host=10.132.111.14) (port=1521))(Connect_data= (service_name=busi_db))) The load_balance=on indicates

1 Flush any unsent redo from the primary database to thetarget standby database. If the primary database can be mounted, it may be possible to flush any unsent archived andcurrent redo from the primary database to the standby database. if thisoperation is successful, a zero data loss failover is possible even if theprimary database is not in a zero data loss data protection mode. Ensure that Redo Apply is active at the targetstandby database. Sta

The previous gitlab dual-host mutual backup environment (refer to the previous blog post) still has a problem: the backend database is a single server and there is a risk of spof. In the past few days, we have investigated relevant materials, mysql-proxy can be used to solve this problem. Environment required: Build a master-slave environment with two MySQL servers: Master-Master Build mysql-proxy on one serverSummary 1. Set up the MySQL Master/Slave environment: Master-Master 2. Implement

Today, we demonstrated the switching process between switchover and failover on the virtual machine. The customer is concerned with failover. We directly turn off the virtual storage switch to simulate array faults. Failover steps are as follows: 1. SelectNAME, RESETLOGS_TIME, LOG_MODE, OPEN_MODE, PROTECTION_MODE, REMOTE_ARCHIVE, DATABASE_ROLE, SWITCHOVER_STA

15.6 Upgrading AlwaysOn Failover Clusters15.6.1 PrerequisitesThe prerequisites for upgrading an FCI (failover cluster instance) are roughly the same as for upgrading a standalone instance.You cannot upgrade a standalone instance to an FCI. If you need to upgrade a standalone instance of SQL Server to an FCI, you must do so by following these steps.(1) Install the FCI.(2) Migrating the user database database

If we want to ensure high availability of SQL Server, we can adopt a Failover cluster. The simplest failover cluster is two servers, one active server and the other standby server. This is the cluster in AP mode. Another mode is the AA mode, that is, both servers are running SQL Server instances. SQL Server does not have RAC like Oracle, so it is impossible to say that the two servers run the same instanc

Label:1.failover Pre-check#如果有多个standby数据库 to see which standby received the latest redo. sql> SELECT * from V$archive_dest_status; #查看standby库接收到的最新的SCN sql> Select thread#,sequence#, Last_change#,last_time from V$standby_log; thread# sequence# last_change# last_time ---------------------------------------------- 1 7128 126385274 2 May-April -16 1 0 0 1 0 0 sql> 2. Exe

Cisco ASA failover Command Injection Vulnerability (CVE-2015-0675) Release date:Updated on: Affected Systems:Cisco ASA 1, 5500Description:CVE (CAN) ID: CVE-2015-0675 The Cisco ASA 5500 Series Adaptive Security Device is a modular platform for providing security and VPN services. It provides firewall, IPS, anti-X, and VPN services. The failover ipsec function of Cisco ASA Software has a security vulnerab

Oracle10g physical master database and slave Database: switchover switch: Switch Under normal circumstances when the master database and slave database data are synchronized, mainly used for Master/Slave maintenance, switch drill, etc.; failover Switch Oracle 10 Gb physical master database and slave Database: switchover switch: Switch Under normal circumstances when the master database and slave database data are synchronized, mainly used for Master/S

DHCP Hot Backup Using the Failover protocol of DHCP I. Current backup solutions and Defects Currently, DHCP servers adopt the cold backup solution. Only one server provides services and the backup server is enabled only when the primary server goes down. The disadvantage of this solution is: 1. High switching latency when the primary server fails. In this case, you need to disconnect the master instance from the network and change the IP address of th

Introduction to the high availability of a replica set The replica set achieves high availability through automatic failover. When the master node fails, the slave node can be elected as the master node, and this process is automatically performed in most cases, manual intervention is not required. In some cases, data rollback is required for automatic failover. Deployment of replica sets (number of replica

How to fix the standby database after ORACLE 11G replica uard Failover, and restore uardfailoverProblem scenarios after failover:Due to the failover test, a standby database has been changed to the primary database. How can I change this new primary database (the original standby database) back to the standby database?Both are primary, p1, and p2. How can I set one primary database 1 to p1, And the other pr

Implement PostgreSQL failover in CentOS 6.5 Pgpool-II is an intermediate component that works between the PostgreSQL multi-server and the PostgreSQL Data Warehouse client. It provides the following functions: Connection Pool: pgpool-II is used to save and connect to the PostgreSQL server and reuse new connections with the same attributes (that is, the user name, data library, and Protocol version ), reduces the sales of connections and increases the o

The previous article has been prepared for the configuration of the mirrored database, and the next step is to enter the real configuration phase First, set security on the mirror database server and start the database mirroring session 1, expand the database, select Virtualmanagerdb, right-click Select Task-Mirror 2, click Configure security, select is, including the witness server 3, remove the witness server, the future configuration 4, set the principal server, fill in the end nam

Tags: SQL Server 2014 log shipping13.4 Fail-Over13.4.1 Fault LocationAs explicitly mentioned in the previous sections, log shipping consists of three basic jobs: backup jobs, copy jobs, and restore jobs. Use the previous festive log transfer monitoring function to locate which job has a problem:If there is a problem with the backup job, check the primary server status.If there is a problem with the restore job, check the secondary server status, or the secondary database is in standby mode when

Tags: RAC failover Viewing listening, using a grid user 11GRAC1:11grac1->lsnrctlstatus lsnrctlforlinux:version11.2.0.3.0- Productionon14-aug-201500:30:26 copyright (c) 1991,2011,Oracle. allrightsreserved. connectingto (description= (address= (PROTOCOL=IPC) (Key=listener)) statusofthe LISTENER------------------------alias listener version tnslsnrforlinux: version11.2.0.3.0-production startdate 13-aug-201522:17:25 Uptime nbsP;0days2hr.13m

Tags: Database mirroring failover WMI EventSQL Server database mirroring based on availability group failoverMicrosoft began to introduce database mirroring from SQL Server 2005 and quickly became a popular failover solution. A big problem with database mirroring is that failover is database-level, so if a database fails, mirroring will only switch to that databa

Role Switching between Data Guard master and slave databases is divided into the following two types:1) SwitchoverSwithchover is generally designed to switch roles, such as upgrading. It is usually lossless, that is, there will be no data loss.Its execution is divided into two phases:1. convert Primary to Standby2. Convert Standby (one) to Primary2) FailoverFailover means that because a Primary fault cannot be recovered in a short time, Standby has to act as a Primay. If it is in the highest-per

[Oracle] role switching between Data Guard-Switchover and Failover Data Guard master/Slave databases can be divided into the following two types: 1) SwitchoverSwithchover is generally artificially scheduled for role switching, such as upgrading. It is usually lossless, that is, there will be no data loss. The execution of StandbyStandby is divided into two phases: converting Primary to StandbyStandby (one) to Primary2) FailoverFailover means that beca

Simulate a failover 1. Stop the listener of the standby database [oracle @ rhel132 ~] $ Lsnrctl stop2. the master database needs to be restarted. (If the listener is disabled in the slave database, the communication between the master database and the slave database is still not broken. It is a persistent connection ), after that, perform the switch logfile several times: SQL> shutdown immediate; Database closed. databasedismounted. ORACLE instanceshu