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Oracle Data Guard
Oracle Data Guard
Oracle Data Guard is a tragedy retrieval software for Oracle SE that insure highschool availableness , datum shelter , and disaster recuperation of the database in Oracle . The software package allow the management , monitor , and automation software package to keep open exclusive or multiple imitate of the database in subject of a disaster . It protect the database from failure , disaster , datum depravation , and tied man error .
conformation in Oracle Data Guard
conformation in Oracle Data Guard
Primary database
The database is in the main approachable by almost of the application . The chief standby in Oracle Data Guard work in the primary election function too denote to as the product database .
Standby database
then it reapplies the SQL minutes on the lucid understudy . The standby database can be either physical understudy or consistent understudy database . A standby database in the Data Guard is a transactionally uniform replicate of the master database . At the Sami time , the legitimate understudy database win over the make over get from the forcible database into datum and SQL . The Oracle Data Guard preserve each understudy database by carry the remodel data from the main database and then give it to the understudy database . The forcible standby database in the understudy database role the “ Redo Apply ” engineering science and get the Lapplander DBID identifier as their primary equivalent weight . In the Oracle Data Guard physical understudy , the information sentry go retroflex the demand physical mental object across the Oracle Net meshwork layer .
welfare of Data Guard
welfare of Data Guard
round-eyed , ensure , and quick One - way of life reproduction
It as well wield about work load at the default on conformation with selfsame petty administrative disk overhead . The Oracle Data Guard is one of the bare disaster recuperation software , which is real elementary to economic consumption and exercise in a simple forge by uphold the stop up and take strong-arm replicate / replication of the database remotely .
No confinement
Unlike other catastrophe recuperation software system , Oracle Data Guard own no confinement for any data eccentric , let in XML and BLOB . It copy and keep going all datum character , PL / SQL package , and DDL without especial considerateness .
foil of backup
In Oracle Data Guard , the RMAN relief are as well similar . The Data Guard hold open the support of datum in the main database and standby that are exact replicate of each early .
High Availability of Data
Oracle Data Guard put up the gamey grade of data point protective cover without compromise the availability of the elementary database . It kit and caboodle to execute active agent - passive datum retort for the increase availableness of information . As a solvent , it make pass for the bare and the fastest one - way of life rejoinder of a thoroughgoing prophet database . The Oracle Data Guard is one of the intimately cataclysm shelter computer software jazz for its simmpleness , data point availability , undecomposed data aegis , and eminent carrying into action .