What are the minimum required parameters in pfile? How you can replace Optimizer EP for your Query? What are the migration's high-level steps in Azure? Why do bind variables matter for performance? If we remove a database target from OEM does it remove the database from the host or just monitoring? Using CURRENT LOGFILE clause is required to start real-time apply in data guard? The value of the Standby management parameter is manual, and activities are going on in production, what will you do to sync standby? Can we do DML operations on global temporary tables on Oracle Active Data Guard standbys? What is the troubleshooting you did in your daily activities? Following is the link for recommended book Locally or shared storage? How can I do it? How many voting disks are required to set up the RAC? What is Fragmentation in Oracle Database? What is the difference between maximum performance, maximum protection & maximum availability in Data Guard? What is the undo management? Difference Between Oracle Goldengate & Oracle Data... What is the section you will look into in the AWR Report to improve the DB performance? In the case of OS patch what will be your task as a dba? DBMS_ROLLING PL/SQL package contains unsupported data types? What are db file sequential read Wait Event & db file scattered read Wait Event? Oracle Database Administrators, also known as Oracle DBAs, are responsible for the implementation and management of a companyâs Oracle database system. To understand this check any v$ view or dba_view you will find the con_id column which states that what database â¦ What is the difference between exp/imp and expdp/impdp? For SQL Query Improvement what you will do? What is the purpose of kernel parameters? Difference between physical and logical standby? If LOB object is taking much time to export what will be your action? Letâs start by Q1. This list of Oracle Fusion HCM Interview Questions and Answers will come in handy for a quick revision and when you are a bundle of nerves before the interview. When do you propose a RAC solution to your business client? If I have to update one column value, what will happen in the background? Which script drops the stdbyperf user and tables? Question2: What are bind variables and why are they important? Oracle Backup and recovery is one of the essential duties of Oracle DBA AL contains archived logs. You are here: Home / Latest Articles / Database / Top 50 Oracle Interview Questions and Answers last updated November 7, 2020 / 6 Comments / in Database / by admin 1. 250+ Oracle Dba Interview Questions and Answers, Question1: What is the difference between RMAN and a traditional hotbackup? Migrating a Database across platforms. Can we create a logical standby of a CDB? In testing, it is taking 2 hours and in production, now it is taking 4 hours what you will check? Be wary of candidates who lack experience with DBA case tools and anyone not familiar with API programming languages. If you're looking for Oracle Exadata Interview Questions for Experienced or Freshers, you are at right place. What happens if we delete some rows and give commit? Resource utilization 2.2. What is Oracle Application Express? If we take a full backup on Wednesday and after that, we take incremental backup on Tuesday and Friday, and on Sunday database crashed so how you will perform recovery? Data-pump is an optional process in GG, then why Oracle recommends it to use? The Export and Import utilities are the only method that Oracle supports for moving an existing Oracle database from one hardware platform to another. Oracle interview questions !!! Oracle RMAN Interview Questions are must for Oracle DBA's looking for change. Integratioâ¦ Which one is better, a full table scan, or Index scan? 1. When One Should Execute Exacheck? If I set memory_max_target to 8gb and want to set memory_target to 10gb. Ans: Complete Oracle Apex Interview Questions Oracle Application Express (also called APEX and formerly called HTML DB) is a FREE RAD web development tool. If we create a new database which parameter is important to check? If the switchover does not complete successfully, which view you will check? If yes, then we bring you here a list of commonly asked but important PL/SQL interview questions. When interviewing Oracle Database Administrators, the most suitable candidate will have â¦ What is the troubleshooting you did in your daily activities? What action you will take to avoid Archive full issue? How the Client gets Connected to Instance? We are using RMAN backup for migration but it is taking too much time and we have 4 hrs window to migrate, What will be your approach and Will data guard be beneficial for this problem? With an additional 50 professionally written interview answer examples. 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Practice 25 Data Migration Interview Questions with professional interview answer examples with advice on how to answer each question. What are things you look into when you are creating a Test Environment from a Production Environment? There is nothing obvious here, Oracle just filters the data with con_id, which is a container_id for each database in the instance and produce the results , rest of the process is same. What is partitioning? How you will Find out the history of apply lag values since the standby instance was last started? My DBA Community, My todayâs post is very important for those who are looking for a job and preparing for an Interview. What is the prerequisite of the data guard? Which tool(Procedure) you will use for handling logical standby database failures? You should consider following Database Consolidation Goals to achieve: 1. How You Determining transport or apply lag is done on the standby database? Why we should have an odd number of voting disks? Introduction To Oracle Interview Questions And Answer Itâs a must for everyone to learn SQL. What is block change tracking and when it is used before level 0,level1, or after that? What would the solution you could give? What is a flashback and what is mandatory for a flashback? How you will monitor the Data pump activity? Why we do CF You generate an explain plan and found that full table scan, how you can avoid that, what is your suggestion on this? These questions are common for both Senior Oracle DBA or Junior DBA. What is the basic parameter you will set for RMAN? What is the actual size and mirror size in V$ASM_DISKGROUP? You are using Toad and you are running procedure and you get a TNS error what is the reason? How does authentication happen in Oracle Database? Can we use SYNC & NOAFFIRM ATTRIBUTES use together in maximum availability mode? We have multiple control files in multiple locations. 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