dataguard oracle

Description This article installs the Oracle 11g Dataguard physical repository and tests the 11g Dataguard physical Repository's new feature active Data Guard, which is a function of Oracle Database Enterprise Edition, which requires the amount External authorization, this article is for testing only. First, the envi

$archived_log al, v$archive_dest ad, V$archive_dest_status adswheread.dest_id=al.dest_id andal.dest_id=ads.dest_id andal.resetlogs_change#=(Select Max(resetlogs_change#) fromV$archived_log)Group byads.dest_id; dest_id CurrentSequence last archived------- ---------------- ------------- 1 + + 2 + - On standby Selectal.thrd "Thread", Almax "last seq Received", Lhmax "last seq Applied" from(Selectthread# THRD,Max(sequence#) Almax fro

,sequence# fromV$managed_standby; PROCESS STATUS sequence#------------------- ----------------------- ----------ARCH CLOSING theARCH CONNECTED0ARCH CONNECTED0ARCH CLOSING $RFS IDLE0RFS IDLE theRFS IDLE0MRP0 Applying_log the5. Test the active Dataguard On primary Create Tabletest01 as Select file_name fromDba_data_files;Select * fromtest01;file_name------------------------------------------------------------/U01/App/

Prior to Oracle 11g, the database needed to be in the Mount state when the physical repository (physical Standby) applied Redo. Starting from 11g, when applying redo, physical repositories can be in read-only mode, which is called Active Data Guard, which can realize real-time query function. 1. operation on standby Library 1) View the current status of the standby mount Sql> select Open_mode,database_role,db_unique_name from V$database; Open_mode

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 libr

Tags: log nbsp Data function log archive test data check RAC archive logs1. Check the master standby sync status2. Turn on the flash back function and flash back directory of the standby library3. Cancel the recovery process for the repository4. Create a restore point for the standby library5. Archive logs in the main library6. Confirm that the repository has archived the latest logs7. Delay point to the log archive destination for the backup that will be activated8. Activating the Standby Libra

1. Main Library Broker Configuration 1) Query Switchover status Sql> select Database_role,switchover_status from V$database; Database_role Switchover_status ---------------- -------------------- PRIMARY to STANDBY 2) Query Dg_broker_start parameters Sql> Show parameter Dg_broker_start; NAME TYPE VALUE ------------------------------------ ----------- ------------------------------ Dg_broker_start Boolean FALSE Sql> alter system set Dg_broker_start = true; 3) Listener file to add stati

, can be said to improve productivity. Dataguard: generally for the purpose of disaster tolerance. is the primary database of the standby library (standby library) through the automatic transfer and acceptance of Archivelog, and in the Dataguard library automatically apply these logs, so as to achieve the purpose of synchronization with the primary database, it is possible that the

The Data Guard is Oracle's remote replication technology, which has physical and logical points, but in general it needs to have a separate system in place, where two hardware configurations can be different, but the software structure of the two systems is consistent, including software versions, directory storage structures, As well as the data synchronization (in fact, is not real-time synchronization), the two systems as long as the network is available, is a remote disaster-tolerant solutio

The oracle Dataguard is the Oracle's own data synchronization feature that transfers log files from the original database to the target database and then applies the log files on the target database, keeping the target database synchronized with the source database. is a database-level high availability scenario. dataguard can provide

Tags: Ada CTI Company snap log compare archive buffer disaster preparednessOracle database is still at the forefront of commercial databases. The security of the core business and core data running on the Oracle database is particularly important. There are generally two broad categories of disaster recovery products that are common to Oracle databases on the market. Oracle's own disaster-tolerant

Dataguard can provide redundancy of Oracle database, data protection, fault recovery and so on, realize fast handover and disaster recovery of database. When the production database is guaranteed transactional consistency, a standby database is created using a physical full backup of the production library, which is automatically maintained by an archive log or redo entry that is transferred from the produc

Dataguard provides support for high availability of enterprise data, data security, and disaster recovery, typically consisting of a dataguard configuration of a primary db with several physical or logical standby db.System environmentOperating system for Windows Server 2003 R2 Enterprise x64 Edition Service Pack 2,database for Oracle 10g 10.2.0.4 Enterprise x64

After half a month of Oracle Dataguard physical repository configuration and learning, although the version uses Oracle 11g (11.2.0.3), the configuration process still applies to Oracle 10g. In the process of nearly 10 dataguard configuration, it is found that it is very con

This document is only the process of deploying Dataguard, does not involve the interpretation and description of concepts, there is no dataguard theory of introduction, in this regard, please check the official Oracle documentation. Operating system: RedHat 4.2 [ORACLE@DG1 ~]$ Uname-a Linux dg1 2.6.9-22.el #1 Mon Se

Oracle Dataguard Normal switchover and emergency switchingOracle Dataguard offers offsite disaster recovery solutions that can effectively prevent single points of failure and provide highly available technology, which describes dataguard normal primary and standby switching and emergency switching (emergency switching

Oracle Dataguard normal switching and emergency switching Oracle Dataguard provides disaster-tolerant solutions that can effectively prevent single points of failure and provide highly available technology, here is a description of the Dataguard normal main-standby switc

ExportOracle_hostname=dgExportOracle_unqname=dgExportOracle_base=/u01/oracleExportOracle_home=$ORACLE _base/product/11.2.0/db_1ExportOracle_sid=dgExportPath=$ORACLE _home/bin:$PATH ExportLd_library_path=$ORACLE _home/lib:$LD _library_path ExportClasspath=$ORACLE _home/jlib:$ORACLE