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Tags: 11.2 mysql tab arch scope show error not docRecently in the customer site to build a disaster tolerance environment, found that encountered a bug, in the case can not be resolved, give up the broker, can still achieve adg,oracle can't realize the dual-master, but MySQL can ha. The official website says to record a bit.OERR: ORA-16597 "Oracle Data
The Oracle installation and configuration process is closely related to the operating system, storage, and network. Especially in Linux and AIX environments, the configuration process is relatively complex. A link error may cause a series of faults in the future.In addition, the steps and methods for executing the same installation project vary greatly with the Oracle version. For example,
Oracle Active Data Guard adjustment case [2] The customer's Oracle 11gR2 Active Data Guard environment, the master database's standby_file_management = AUTO, the Standby database's standby_file_management = MANUAL, resulting in th
configuration file implementations, back to the primary database. The SQL configuration file implemented on the primary database is recommended to be applied to the ADG standby database using the Redo application mechanism.For more new features, please click :Oracle 12.2 New features handheld handbook-Performance and Diagnostics for volume sixth ADGDeploying Columnstore on ADGWe are doomed to lose the people we love, otherwise how do we know how impo
meaningless if there is an interruption in the connection between the primary and standby libraries. The value of the Datum_time column corresponding to the transport lag, apply lag, if not changed, indicates that they have not been updated and is meaningless, possibly due to an interruption in communication between the primary and standby libraries.1.1.3SwitchoverSwitchover is typically used to reduce the downtime of the main library during planned outages, such as upgrades to the operating sy
ORACLE 11G Data Guard role conversion, 11 gguard1. ORACLE login uard Role SwitchingDataGuard is now the mainstream disaster tolerance solution. Due to its strong adaptability to the network, it can adopt synchronous real-time transmission mode and asynchronous delay transmission mode, it can even become a remote disast
Oracle Data Guard provides one or more slave databases for the production database (a copy of the database ), to ensure that data is not lost when the master database is unavailable or when exceptions occur, and continue to provide services through the slave database. For the configuration of
stops the SQL app to activate the main library. Without the finish apply clause, the current target repository does not apply redo logs that have not been applied until the target repository is transferred to the primary library role. 5. Recover other repositories after failoverEnsure that other existing repositories continue to provide protection for the new primary library.6. Back up the new main libraryAfter failover is executed, it is a necessary
RAC, Data Gurad, Stream are three tools in the Oracle High-availability system, each of which can be used independently or in conjunction with each other. Their respective emphasis is different, the application scenario is also different. RAC its strength lies in solving single point of failure and load balancing, so the RAC scheme is often used in the core system of 7*24, but the
Before Oracle 11g, the physical Standby database (physical Standby) cannot be opened when applying redo, but can only be mounted. Starting from 11g, when applying redo, the physical standby database can be in read-only mode, which is called Active Data Guard. With Active Data Guard
;ConfigurationName:c1Enabled:yesProtection mode:maxavailabilityDatabases:Dg-primary DatabaseProd1-physical Standby DatabaseFast-start failover:disabledCurrent status for "C1":Warning:ora-16610:command "EDIT DATABASE prod1 SET Property" in progressDgmgrl> Switchover to PROD1Performing switchover now, please wait ...New Primary Database "Prod1" is opening ...Operation requires shutdown of instance "DG" on Database "DG"Shutting down instance "DG" ...Ora-01109:database not openDatabase dismounted.OR
The Oracle Data guard logical standby database uses a backup of the master database to first create a physical standby database and then convert it to a logical standby database. After that, the master database transmits the logs to the slave database. The slave database uses logminer to parse the SQL statements executed by the master database from the logs of th
To delete an archive file of the master database in the Maximum Availability and Maximum Performance modes of Oracle Data Guard, the archive file must be deleted after the backup database is applied. For Maximum Protection mode, logs in this mode are written to the maste
Oracle Data Guard role conversion experiment environment: OEL + Oracle11.2.0.3 + physical standby as we all know, Data Guard is already the mainstream disaster tolerance solution of today's standards. Due to the strong adaptability of log transmission to the network, in addi
. 3. Insert tablespace Invoke the Data Pump utility to plug the set of tablespaces into the primary database. Redo data will be generated and applied at the standby site to plug the tablespace into the standby database. Call the Data Pump to insert the tablespace to the master database. Then, the slave database will obtain the redo
DataFile (s) in backup setincluding standby control file in backup setChannel ora_disk_1:starting piece 1 at 2016-11-23 21:20:42Channel ora_disk_1:finished piece 1 at 2016-11-23 21:20:43Piece Handle=/home/oracle/ctlfile.bak tag=tag20161123t212041 comment=noneChannel Ora_disk_1:backup set complete, elapsed time:00:00:01Finished backup at 2016-11-23 21:20:43Rman> Then, when the backup task is finished, on the main library, the control fil
Apply before you can change the log files. 1. If the redo application is running, you must cancel the redo application after you change the log file. 2. If the STANDBY_FILE_MANAGEMENT initialization parameter is set to AUTO, change the value to MANUAL. If the STANDBY_FILE_MANAGEMENT initialization parameter is set to AUTO, change it to MANUAL. 3. Add or drop an online redo log file: 3. add or delete online redo log files: Bytes To add an online redo log file, use a SQL statement such as this: A
Tags: is technology sharing images session learning notes es2017 physical standby Sele 1.5DG is a backup recovery tool, but more strictly the meaning of it is disaster recovery Data Guard is a collection of one primary database and one or more standby databases, divided into two classes of logical standby and physical standby 10.2.1 preparation of physical standb before creation Whether it is physical stan
EnvironmentOn servers 192.168.1.89 and 90, the operating system is linux Red Hat as 5.2, Oracle 10.2.0.4 is installed, and a single instance database webdb is created respectively.Configure the Data Guard environment with the webdb Of the 89 database as the master database and the slave database of the 90 database as the backup database. Procedure for creating
We have provided an overview of the unique features of Oracle 11g R2. At the same time, we also describe the enhancement of the data warehouse performance related to Oracle 11g R2. The following describes the enhanced features of Data guard in
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