dataguard oracle

We've talked about the construction of Oracle 11G Dataguard in the front, and the 10G build is similar. However, Oracle 10G does not support standby openEnvironment: Role Host Name Ip Database version Operating system version Primary Fdb1 192.168.10.8 10.2.0.1 CentOS 5.11 x86_64

Customer has a 11g active Dataguard library, the MRP process stopped, see Alertlog, you can see the error about Ora-7445[kdxlin]: Cat Alert*.log .... Exception [Type:sigseov,address not mapped to object] [ADDR:0XC] | Pc:0x96504c7,kdxlin () +4153][flags:0x0,count:1] Errors in Le/aabb/app/oracle/rdbms/diag/rdbms/rmydbsid/mydbsid /TRACE/PARTSM_PR18_21343.TRC (incident=70353): ora-07445:exception Encoun

broker configuration.First, enable Dataguard BrokerThe following two steps are required on the master/slave database.1.1 Enable Dg_brokersql> ALTER SYSTEM SET dg_broker_start=true scope=both; System altered.Check the background process and you will find that Oracle has started a process more11gdg1-> Ps-ef |grep ora_dmon Oracle 19675 1 0 03:43? 00:00:00 ORA_DMON

Oracle DataGuard physical Standby builds Arch asysncOracle Dataguardprimaryhost: primaryIP: 192.168.198.136Oracle _ sid: Role: dg_pd standbyhost: standyIP: 192.168.198.128Oracle _ sid: Role: dg_st 1. configure www.2cto.com 1. set the master database to force logging mode SQL> alter database force logging; 2. modify the archive log storage path: mkidr-p/u01/archive /Chown-R

Migrate a single oracle instance to RAC through dataguard One instance primary to RAC standbyDataGuard Configuration: Primary Standby Clusterware Oracle Database 11g Enterprise Edition Release 11.2.0.4.0-64bit 11g R2 Grid Infrastructure (11.2.0.4) Cluster Nodes Cltrac1 Srvrac1, srvrac2 DB_UNIQUE_NAME Test

, from the library to take over the main library, complete identity changes. Can be a master library, up to 9 from the library. It is also divided into logical standby and physical standby here we are talking about physical standby.Once created and configured as standby, DG is responsible for transmitting the primary database redo data to the standby database, and standby the database to keep the redo database transactions consistent with the primary data received by the application.This is clea

Oracle database Cluster disaster tolerance implementation and maintenance (Rac+dataguard+goldengate) Training TutorialsPackage Description:Wind Brother Oracle Database Cluster disaster Recovery (rac+dataguard+goldengate) Implementation and Maintenance training course package) includes content:ORACLE12C

How does oracle11g restore the primary database of dataguard to an oracle single-host instance?You need to recover the primary database of dataguard to an oracle single-host instance. Therefore, record the detailed process 1, pull a new parameter file from the production environment, and copy it to the test environment

Oracle elastic uard is a database-level HA solution. Its primary functions include redundancy, data protection, and fault recovery. When the "transaction consistency" of the production database is used, the physical full backup (or physical COPY) of the production database is used to create the standby database, the slave database automatically maintains the slave database through the archive logs (or redo entries) transmitted from the production data

Tags: Oracle dataguard Best PracticesOracle Dataguard Redo Network Best practices (simplified translation)Oracle Dataguard Benefits:1 minimal impact on system performanceHere are two maximum available architecture (MAA) scenario configurations, with sufficient bandwidth to d

1. Switch: User actively switch;2. Failover: Main Library failure, forced to switch; Switchover: General switchover switch are planned to switch, characterized by switching, will not lose any data, and this process is reversible, the entire dataguard environment will not be destroyed, All physical and logical standby in the original Dataguard environment can continue to work.Before you make a physical stan

Tags: data storage disaster Oracle DGFirst, the preparation of the main library side1. View the database directory structure in the main libraryTo view the database file pathSelect T1.name,t2.name from V$tablespace t1,v$datafile T2 where t1.ts#=t2.ts#;View Log file pathSELECT * from V$logfile;View Control File pathSELECT * from V$controlfile;2. Open the database archive and activate the Force logging modeView Archive modeArchive Log ListTurn on archiv

How to deal with Oracle DataGuard archive log loss A database is configured with Physical Transaction uard (hereinafter referred to as dg). Because no check is performed, the archive day is deleted on the master database, and the slave database is not fully applied, therefore, the slave database remains in the previous archive log. Check the master database and find that log no. 25 for dest_id is lost. PRIM

1. Build the EnvironmentMain Library ORACLE11GR2 Library ORACLE11GR2Db_name ORCL ORCLDb_unique_name ORCL standby239Configuring the Host FileMain Library: Primaryhost Library: StandbyhostThe prepare library is placed in archive mode.2. Configure static monitoringPrimary and standby libraries are configuredListener.oraSid_list_listener =(Sid_list =(Sid_desc =(Sid_name = Clrextproc)(Oracle_home =/data/oracle/product/11.2.0/dbhome_1)(program = Extproc))(S

[[email protected] admin]$ Rman target Sys/[email protected] Auxiliary/Rman> duplicate target database for standby nofilenamecheck;Rman> exitClose the databaseShutdown immediate 5. Start the Redo applicationStartup Nomount;ALTER DATABASE mount standby database; sql> ALTER DATABASE recover managed standby database using current logfile disconnect from session; Database altered.6. VerificationMain LibrarySql> Archive Log ListDatabase Log Mode Archive modeAutomatic Archival EnabledArchive Destin

wasn't restored from a sufficiently old backupOra-01110:data file 1: '/OPT/ORACLE/ORADATA/TPY100/SYSTEM01.DBF 'Is the standby monitoring is not open, using lsnrctl start, start monitoring, and then open the database will not error.sql> ALTER DATABASE recover managed standby database using current logfile disconnect from session;The test has the following statement:Sql> select sequence#,applied from V$archived_log;Sql> select Process,status from V$man

: Release 10.2.0.5.0 - Production on Wed Jan 4 23:24:25 2017 Copyright (c) 1982, 2010, Oracle. All Rights Reserved. Connected to an idle instance. SQL> startup nomount pfile=‘/tmp/init.ora‘; ORACLE instance started. Total System Global Area 293601280 bytes Fixed Size 2095768 bytes Variable Size 146802024 bytes Database Buffers 138412032 bytes Redo Buffers

Oracle 11g Dataguard Snapshot standby database functionality, which places the standby in open read/write state and simulates the test in the main library of the production environment. When the standby snapshot standby task completes, you can switch back to the physical repository role. In the state of snapshot standby database, the repository can accept the log from the main library, but it cannot apply t

Tags: revert to my many help summary pen. NET Preparation SpecialTransferred from: https://www.jb51.net/article/52269.htm This article mainly introduces the Oracle 11g Dataguard parameters in detail, including the independent parameters, the main library parameters, the library parameters detailed description, the need for friends can refer to. Note: This article is translated from

Switchover is a master-slave library role switching, lossless conversion, usually the user manually triggered or planned to let it automatically trigger, such as hardware upgrades, software upgrades and the like. The failover is how to switch from the library to the main library when the main library fails.First, how to use SQL command to switchover. Check whether the main library supports switchover operations Log in to the database and execute the following querySql> select Switc