What are the uses, Tell about various types of queries that you know. For my point of view, it is better to apply PSU as it (only need to change the value no need to bounce)DEFERRED : We can change the parameter in fly database but this will effect after restart the database only. Example To enable trace for sql session with sid 9779, It is New feature in Oracle database post 10.1 onwards. Oracle Concepts and Architecture Interview Questions and Answers. Question 3 What is a Tablespace?Answer: Oracle use Tablespace for logical data Storage. You have many instances running on the same UNIX box. Are you looking for Oracle Apps DBA jobs?Then we in Wisdomjobs collectively provided a detail amount of basics of Oracle and in-depth details about Oracle Apps DBA Interview Questions and Answers along with the various job roles. Perform backup recovery. What is Rollback Segment ?Answer:Database contain one or more Rollback Segments to roll back transactions and data recovery. Question 16. Database creates “SYSTEM tablespace” by default during database creation. It is used as a place holder or represented as a default entry indicating that no actual data is present. Question 49 How to enable trace at database level? There is one Local Inventory per ORACLE_HOME. In Oracle RAC, we have one set of datafiles,control file and redo logs while instance on one ore more boxes accesses the same database. Perform backup recovery. Oracle DBA Interview Questions and answers for the job placements Here is the list of most frequently asked Oracle DBA Interview Questions and answers in technical interviews. There are a lot of opportunities from many reputed companies in the world. The command returns the release information, opatch is utility to apply database patch , In order to find opatch version execute”$ORACLE_HOME/OPatch/opatch version”Even if you simple write $ORACLE_HOME/OPatch/opatch, it will show the opatch version in the start. This questions are frequentlyasked in all interviews. Oracle Interview Questions and Answers. RAW data type is used in storing values in binary data format. We can create a new Schema/User. the PSU contains the CPU + some technical bugs fixed. top is a operating system command, it will display top 10 processes which are taking high cpu and memory. Question 80 . What Is Consistent Backup? Usually this is a patch set. Question 77 How do we check if a Database upgrade is successful? Question 69. ... (In Oracle, procedures cannot directly return a value). 8. NVL(Value, replace value), To get the field of a specified table use, Describe . How to kill the database session?Answer. They are differentiated by space. Learn Oracle, PHP, HTML,CSS,Perl,UNIX shell scripts, This article contains the most commonly asked top 80 oracle dba interview questions and answers, Answer: Oracle Database is a relational database management system (RDBMS) which is used to store and retrieve the large amounts of data. Statistics should only be gathered when there are no active users or system activity is very low. SQL Server DBA Interview Questions and answers are very useful to the Fresher or Experienced person who is looking for a new challenging job from the reputed company. Question 71. What is a primary key? Its location is defined by the content of oraInst.loc.The Global Inventory records the physical location of Oracle products installed on the machine, such as ORACLE_HOMES (RDBMS and IAS) or JRE. Execution Plan: This is a useful SQL server tool, as query execution plans can be used to establish processes that need to be fine-tuned in order for a query to run faster. Read TOP 200 Biztalk XSLT Interview Questions and Answers for experienced freshers PDF . The maximum size of a RAW in a table is 32767 bytes. This usually indicates that database object definitions are being changed regularly. The low SCN records the lowest SCN recorded in the log file while the high SCN records the highest SCN in the log file. Answer: BLOB is a binary large object datatype. Oracle Data Integrator (ODI) Interview Questions. Mention Oracle DBA Characteristics. Learn about interview questions and interview process for 24 companies. Question 12. 10g R1, 10g R2, 11g R1, 11g R2, 12c R1. Ans: I am not going to say one is better than others, … How do you recover the database if you lost all of the controlfile in the database? Question 56. Oracle DBA interview. Question 51 How to enable trace for other session? It could be undo, data block or segment header wait. According to research, Oracle Apps DBA has a market share of about 0.8%.So, You still have the opportunity to move ahead in your career in Oracle Apps DBA Development. To clear any interview, one must work hard to clear it in first attempt. In a R12 Application system ,the RDBMS and iAS ORACLE_HOMEs and 10.1.2 are registered in the oraInventory. … Are you looking for Oracle Apps DBA jobs?Then we in Wisdomjobs collectively provided a detail amount of basics of Oracle and in-depth details about Oracle Apps DBA Interview Questions and Answers along with the various job roles. You will need to apply the redo logs to complete the recoveryd, alter database open resetlogs; We can avoid the resetlogs by using the steps below1. It is physically located inside the ORACLE_HOME at $ORACLE_HOME/inventory and contains the detail of the patch level for that ORACLE_HOME.The Local Inventory gets updated whenever a patch is applied to the ORACLE_HOME, using OUI. Answer The ASM functionality is controlled by an ASM … 3. create database link connect to identified by using ”; create database link MY1_TO_MY2 connect to apps identified by apps using ‘MY2′; SQL> select name from [email protected] MY1_TO_MY2; SQL>select db_link from dba_db_links;Add destination database tns entry in tnsnames.ora. Question 39 How to generate the AWR report, what is PSU patch and how to verify the PSU update in the Oracle Home. Here are seven common DBA interview questions with example answers to help you craft your own effective responses: 1. How to apply patch to Oracle database Home software? What is a Database? A primary key is a combination of fields which uniquely specify a row. Question 68. Question 59. ... Hope we have covered complex SQL Technical Interview Questions and Answers for Experienced as well as Freshers. We can try to create to recreate the central inventory and If still it won’t work we will apply patch with the following command: oracle 12c new featuresUnderstand Oracle Database 12c – Multitenant Architecture5 Simple (But Important) Things To Remember About Oracle Database 12c views ,parameters and packagesOracle 12c New Features for developersVery useful 10 new things in 12c database, Hope you like this compilation of core oracle dba interview questions and answers.This will be helpful to senior DBA & experienced DBA also. These questions and answers are suitable for both freshers and experienced professionals at any level. What is SCN (System Change Number) ? For example, Suppose you have 4 KB block size for your database,and you need to insert a row of 8 KB into it, Oracle will use 3 blocks and store the row in pieces. Posted by Rashmi. Question 35 Which table u will query to check the temp tablespace space issues? The use of ROW ID is the fastest query method for fetching data from the table. Question 2 What is ASM instance in Oracle? Here is a list of 60 interview questions about Oracle Database with their answers. Temp tablespace is used by so many application programs for sorting and other stuff. We can have 1 or more instance serving a oracle database . Oracle DBA Interview Questions and answers for the job placements. ... (DBA) Interview Questions and Answers here. I have divided the questions into 3 categories Technical Interview Questions, Unix Related questions asked to an Oracle Database Administrator (DBA) and Backup and Recovery Interview Questions commonly asked in Oracle DBA interview. bytes column in dba_free_spaces and dba_data_files. What are the different type of Segments ?Answer. Its a good practice to go through all of these questions before attending the interview. His involvement with the Oracle database started with versions 6.0.36 and 7.0.12. It order to retrieve the rows from the table, apply the hash value on the table. we can find general locks with the following query: If it’s a dead lock, we need to kill that session. A tablespace can have multiple datafiles. Physically, data will get stored in Datafiles. What are the different types of backups that are available in Oracle? Here is the list of most frequently asked Oracle DBA Interview Questions and answers in technical interviews. This questions are frequentlyasked in all interviews. startup mount -mount the control file, startup nomount- does not mount the controlfile, ORA-27154: post/wait create failed during startupOracle Shutdown steps decoded. Question 4 What are Datafiles?Answer:The datafiles contain all the database data. It has an IDE including a property sheet, ... Get Free Oracle Forms Interview Questions Answers person experience, I hope it will use for you while you are facing Oracle How do we find the blocker for Library cache lock? Tkprof utility is used to convert trace file into readable format. How to create it? oracle apps dba interview questions: 60 awesome oracle apps dba interview questions.Must read to succeed in interviews and jobs oracle apps technical interview questions and answers: 19 oracle apps technical interview questions and answers to succeed in your career. Main storage structures. Oracle Interview Questions and Answers. Question 74. Question 41 How to kill a database session? Each question contains their answer also. This kind of block corruptions are normally reported by Oracle with error ORA-1578 and the detailed corruption description is printed in the alert log. It is an Oracle Database client that is used for the backup and recovery tasks on our databases and it can also automate the administration of our backup strategies. Oracle DBA is being utilized as a part of numerous businesses. Question 11. Also, Read Mongo Db Interview Questions Run the following query to find out the p1,p2 and p3 of a session causing buffer busy wait, After that running the following query to find the segment causing buffer busy wait:-, Question 70. oracle apps technical interview questions and answers, oracle dba interview questions for experienced professionals, top 40 oracle dba interview questions and answers, https://www.janbasktraining.com/blog/top-sql-server-interview-questions-and-answers/, Oracle Database Insurance Agent Interview | List of Insurance Firms, Database Insurance Agent Interview Questions Answers | List of Insurance Firms, Oracle Indexes and types of indexes in oracle with example, Top 30 Most Useful Concurrent Manager Queries, How to find table where statistics are locked, How to find weblogic version in Unix & Windows. How can you determine which shared memory and semaphores are associated with which instance? What is called as Views in RDBMS. 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