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What is a system change number SCN? He will have to monitor database activities. You get an idea of how large of a data center the database administrator has worked with.
Oracle DBA Interview Questions
Locking is not only the cause to effects the performance. What background process refreshes materialized views?
They all sound like pretty much the same thing or at least pretty close. The database starts multiple archiver processes as needed to ensure that the archiving of filled redo logs does not fall behind. A standby database automatically applies redo logs when they arrive oracle dba interview question and answer the primary database. Used to process SQL statements and to hold logon and other session information. It contains read only data dictionary tables which contains the information about the database.
Currently, I am working as a application support engineer and I am based in Delhi. Tablespace is a Logical Storage Unit used to group oracle dba interview question and answer logical structures together. Lets take the example of Oracle version The SCAN must resolve to at least one address on anxwer public network.
July 16, at The above are only top new features, there are other features as well introduced in 11g which will be included subsequently What is the Difference Between Local Inventory and Global Inventory?
Later it can be any of the above mentioned state.
What would be the main responsibilities of an Oracle DBA in an organization? Why RMAN incremental backup fails even though full backup exists? Shared pool portion contain three major area: Oracle RAC is composed of two or more instances.
The Best Oracle DBA Interview Questions & Answers [UPDATED]
You need to set large pool if you are using: The shared server process monitors the request queue. What is log switch? Cluster Synchronization Services ocssd — Manages cluster node membership and runs as the oracle user; failure of this process results in cluster restart.
When you add a disk, Ans automatically redistributes the data so that it is evenly spread across all disks in the disk group, including the new disk.
Following initialization parameters are required for parallelism setup in database.
Top 40 oracle dba interview questions and answers – Techgoeasy
Run the below two query to find out the P1, P2 and P3 of a session causing buffer busy wait then after another query by putting the above P1, P2 and P3 values. Administrators who have those privileges are authenticated ofacle this password file even when the database is down. By continuing to use this website, oracle dba interview question and answer agree to their use. When any node is not able to send heartbeat to voting disk, then it will reboot itself, thus help avoiding orace split-brain syndrome.
Instance recovery occurs in 2 steps: When RMAN is initiated, it will start reading datafile headers for used block information.
Thank you so much ,that is very goog document and prapared very well. A password file is a separate operating system file that is stored on disk outside of the database. First it will check the syntax and semantics in library cache, after that it will create execution plan. Explain the difference between a data block, an extent and a segment. September 21, at 2: It will oracle dba interview question and answer that from bitmap blocks With ….