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You should also look at the logic involved in the application getting the error message. You use it by first setting timed_statistics to true in the initialization file and then turning on tracing for either the entire database via the sql_trace parameter or for the session using the ALTER SESSION command. In the alert log. The Job Queue Processes. The difference is that the import utility relies on the data being produced by another Oracle utility EXPORT while the SQL*Loader utility allows data to be loaded that has been produced by other utilities from different data sources just so long as it conforms to ASCII formatted or delimited files. A temporary tablespace is used for temporary objects such as sort structures while permanent tablespaces are used to store those objects meant to be used as the true objects of the database. As objects grow they take chunks of additional storage that are composed of contiguous data blocks. 4)How to check the node connectivity? - Database Oracle Home in the database tier that acts as the Oracle Home for the Oracle database. can we use any other storage? ALTER INDEX REBUILD; 45. adsplice? 33. 2. What is the physical structure of the disk resources in Oracle? ... Download of oracle dba interview questions and answers as PDF is also given below. 57. 12. Use the buffer cache advisory over a given workload and then query the v$db_cache_advice table. Table space, c System server, d Dynamic data replication Explain an ORA-01555 How would you determine who has added a row to a table? What column differentiates the V$ views to the GV$ views and how? difference? Top Oracle DBA, RAC, and Performance Tuning Questions on Advanced Topics for Experienced Professionals: In continuation of the previous article, Top Oracle interview questions, this article includes a set of interview questions to cover some advanced Oracle concepts like database architecture, backup/recovery of database and performance tuning. List of frequently asked Oracle DBA Interview Questions with answers by Besant Technologies. Disable the foreign key constraint to the parent, drop the table, re-create the table, enable the foreign key constraint. It allows users to store and retrieve related data in a multiuser environment so that many users can concurrently access the same data. 43) What are the things that can be done on OAM? Hope you all are doing Good!!! oracle dba interview questions and answers which i faced ... you can find the path to your current session's trace file or to the trace file for each Oracle Database process. 11. 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To understand this check any v$ view or dba_view you will find the con_id column which states that what database … A function and procedure are the same in that they are intended to be a collection of PL/SQL code that carries a single task. Redo logs are logical and physical structures that are designed to hold all the changes made to a database and are intended to aid in the recovery of a database. 32)RAC to Non RAC Clone? 37. The INST_ID column which indicates the instance in a RAC environment the information came from. A. Synonym, B. How would you go about increasing the buffer cache hit ratio? 60 REAL TIME ORACLE DBA Interview Questions and Answers 1. 48. 19. 4)How to check the node connectivity? 20. Faster access to data blocks in a table. How can you gather statistics on a table? Use the describe command or use the dbms_metadata.get_ddl package. How would you go about generating an EXPLAIN plan? 43. 47. Oracle is a company. Use of V$SESSION and V$SESSION_WAIT. When you install Oracle software on the system for the first time, Oracle Universal Installer creates the oraInst.loc file. How would you determine the time zone under which a database was operating? What view would you use to look at the size of a data file? It's good to talk you. Real-Core-DBA I am Kumar Mohit Lal, an Oracle DBA in one of the leading MNC in the world at their Gurgoan(H) office .I have 4 Years of Exp. 28. This list includes questions for junior, experienced and characteristics of Oracle database, roles of a database administrator, tools used for administering Oracle database, comparing a cluster and a grid, Oracle Grid Computing Architecture… The delete command, on the other hand, is a DML operation, which will produce a rollback and thus take longer to complete. Name a tablespace automatically created when you create a database. Both the truncate and delete command have the desired outcome of getting rid of all the rows in a table. 5)What are … This article will cover a list of all the most important and commonly asked “Database” interview questions and answers, which will help you to crack any interview. ORACLE_HOME located beneath ORACLE_BASE is where the oracle products reside. DBA_FREE_SPACE. 60. The ANALYZE command. 30)Have u applied HRMS or Legislative Patches? A fact table contains measurements while dimension tables will contain data that will help describe the fact tables. Materialized views are objects that are reduced sets of information that have been summarized, grouped, or aggregated from base tables. 29. Following is the physical structure of the disk resources in Oracle. Setting GLOBAL_NAMES dictates how you might connect to a database. Q3. 50. autoconfig? 2)What is Voting disk and OCR File? 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Than $ 5 billion by 2020 for Discoverer what is the difference between Direct Path Convention. Used for loading data into the database is mounted startup OPEN – the database while it shut! $ 5 billion by 2020 by forms, reports and Discoverer DBA is being utilized as a table... Do not have to return any values to the database of DBC file Tnsnames.ora! Home in the world prepared by 10+ years experienced industry experts shut down and does not require being archive... Few of the physical structure of the disk resources in Oracle DBA Interview Questions and their answers are given below. Groupings of contiguous data blocks configured on 11 experienced industry experts experts who have than. Objects that are composed of contiguous data blocks are called extents startup OPEN – the database tier acts. Exactly happens when any user connect to database... 1 ) RAC complete Configuration with prereq?! 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