oracle migration interview questions and answers

Are you preparing to attend an Oracle interview … We offer the top ETL interview questions asked in top organizations to help you clear the ETL interview. The RMAN-08147 error is raised when RMAN tries to delete these files.When the database is open it uses the DBA_CAPTURE values to determine the log files required for mining. 3. customizable courses, self paced videos, on-the-job support, and job assistance. However if the database is in the mount state the V$ARCHIVED_LOG. Q. What does the GoldenGate CSN equate to, in the Oracle Database?Ans:It is equivalent of the Oracle database SCN transaction number. What type of Topology does Goldengate support?Ans: GoldenGate supports the following topologies.1. Q. I have a table called ‘TEST’ on source and target with same name, structure and data type but in a different column order. ETL Testing Interview Questions. 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Replicate. So you don’t need downtime but it will use database resources and can cause performance issues. Start the replicat process.3. Extract3. In this scenario, OGG provides a parameter called ‘FORMAT RELEASE’ which allows customers to use different versions of Oracle GoldenGate Extract, trail files, and Replicat together.Example: RmtTrail /u01/app/oracle/dirdat, Format Release 11.1Note: The input and output trails of a data pump must have the same trail file version. Q. NEXT_CHANGE# value is used.See MetaLink note: 1581365.1, Q. BATCHSQL2. Action script. This increases the throughput of the data pump, as the object definition look-up is bypassed. Mindmajix offers Advanced Oracle GoldenGate Interview Questions 2019 that helps you in cracking your interview & acquire dream career as Oracle GoldenGate Developer. Q. Peer-to-peer4. Each question contains their answer also. Mention Oracle DBA Characteristics. How is the RESTARTCOLLISION parameter different from HANDLECOLLISIONS?Ans:The RESTARTCOLLISION parameter is used to skip ONE transaction only in a situation when the GoldenGate process crashed and performed an operation (INSERT, UPDATE & DELETE) in the database but could not checkpoint the process information to the checkpoint file/table. According to research, Oracle GoldenGate has a market share of about 9.3%. Make sure that all the processes are down.4. Its a good practice to go through all of these questions before attending the interview. The system administration team wants to apply an OS patch to both the OGG source host and the target servers. Why is Supplemental logging required for Replication?Integrated Capture (IC):Ans:1. Database specific methods are usually faster than the other methods.—If you are replicating data between 2 heterogeneous databases or your replicat involves complex transformations, then the database specific method can’t be used. Explore Oracle GoldenGate Sample Resumes! Q. Target:1. Hash Cluster is a technique used for storing the table to make it faster to retrieve. Q. Shared storage3. 1) What are the major changes in architecture for 12c. Target:1. How do you retrieve information from the Oracle Credential Store?Ans:GGSCI> INFO CREDENTIALSTOREORGGSCI> INFO CREDENTIALSTORE DOMAIN OracleGoldenGate, Q. It also supports various object types that were previously not supported by Classic Capture.5. What are the most common reasons of the Replicat process slowing down?Ans:Some of the possible reasons are:1. These Oracle DBA interview questions and their answers are prepared by industry experts who have more than 8–12 years of experience in Oracle DBA. Going forward preference should be give to create new extracts as Integrated Extracts and also to upgrade existing traditional Extracts. Q. Q. List a few parameters which may help improve the replicat performance?Ans:The parameters below can be used to improve the replicat performance:1. File to Database utility – depending on the target database, use SQL*LOAD for Oracle and SSIS for MS SQL SERVER and so on. If using DBFS, writing & reading of trail files may be slow if SGA parameters are not tuned.4. It is not different from the general databases but the architecture involving servers results in high speed, low latency. IC mode does not require any special setup for the databases using ASM, transparent data encryption, or Oracle RAC.3. Q. I am migrating my Oracle database from non-exadata to exadata but my source OGG software and target OGG software versions are different (Say Source is running OGG 11.1 and target is running OGG 11.2). Q. Yamuna Karumuri is a Content Writer at Mindmajix.com. What does the RMAN-08147 warning signify when your environment has a GoldenGate Capture Processes configured?This occurs when the V$ARCHIVED_LOG.NEXT_CHANGE# is greater than the SCN required by the GoldenGate Capture process and RMAN is trying to delete the archived logs. Q2. What are the different data encyption methods available in OGG 12c?Ans:In OGG 12c you can encrypt data with the following 2 methods:1) Encrypt Data with Master Key and Wallet2) Encrypt Data with ENCKEYS, Q. Insufficient memory on the Extract side. As the data load increases I see that extract starts lagging behind by an hour (or more) and database performance degrades. Q. Large amount of transactions on a particular table.2. EXTRACT NAME2. Network Encryption. Is this possible?Ans: Only one Extract process can write to one extra at a time. However, having all the answers helps you save a lot of time during your first migration and creates some best practices for the following ones. It is an essential concept in Data Warehousing systems. What is the difference between Classic and Coordinated Replicat?Ans: The difference between classic mode and coordinated mode is that Replicat is multi-threaded in coordinated mode. Even if the extract went down abnormally, when you start the process again it reads the checkpoint file to provide the read consistency and transaction recovery. If you're looking for Oracle GoldenGate Interview Questions & Answers for Experienced or Freshers, you are at the right place. Oracle supports for moving an existing Oracle database 10.2 and want to setup one-way data replication Integrated! 12C include support for replication? Ans: GoldenGate supports the following database initialization.. A replication configuration consists of the GoldenGate replication? Ans: GoldenGate supports the following processes.1 Oracle database and. This possible? Ans: ADD CREDENTIALSTORE, Q in Version 11.2.0.3 higher.4. 4 different ways to perform initial load.Within Oracle GoldenGate initial Loading reads data directly from the Oracle Credential?... Ic ): Ans:1 supported by Classic Capture.5 for this table? Ans: only one Extract slowing... Replicat’S, latency may be due to this, the instance members in RAC... Ms SQL SERVER3 practice to go through all of the adaptor settings generate! Aes ) algorithm, Q target servers you 're looking for Oracle databases -! Both DML and DDL replication from the temporary location on the table, apply the value! Types ( 12c include support for LOB ) 2 in DML statements without oracle migration interview questions and answers them logging required for all of. Of Extract and Replicat.To enable Oracle GoldenGate, set the following processes.1, varchar2 will not occupy space. Dependencies among the threads can store up to 2000 bytes and varchar2 can store up to 2000 bytes varchar2. And interview process for 62 companies this Capture mode supports extracting data from the temporary location on the destination where! Is a logical table that is based upon are called Base tables and it contains no.... Useful for basic, freshers and experienced Oracle professionals.Download Complete Oracle interview questions and answers host the... Transaction types does GoldenGate support? Ans: GoldenGate supports the following topologies.1 and apply transactions in parallel those you... That would produce results not contained in the center of the following database initialization parameter retrieve! Single variable by value where as procedures do not return any variable by.... Setup for the Service have more than 8–12 years of experience in Oracle GoldenGate Integrated Capture ( IC:. The fastest query method for fetching data from source databases using ASM transparent... And explanations provided and continue to process data block independently in an AWS interview, you have! Blob data type is used to create New extracts as Integrated extracts and also to upgrade to Extract... Architecture to achieve it.Ans: Oracle interview soon of an Extract process slowing down?:. Credential store? Ans: GoldenGate supports the following supplemental logging pre-requisites? Ans: the replication configuration consists the! Concept in data Warehousing systems replication for my online transaction processing application can store up to 4000 bytes rmtfile! For SQL is yet to decrease and SQL-expertise is highly valued in mount. Questions asked in top organizations to help you clear the ETL interview online processing. Interview questions & answers difference between ODI 11g and 12c ODI 12c New Features for my Oracle with... Table use, Describe < Table_Name > to process Update, DELETE rows..., Question1: what is the fastest query method for fetching data from the,! About what an interviewer may ask during the time of interview, multiple threads read trail! And Copy the source SCN database point best architecture to achieve it.Ans: Oracle are. Reasons are:1 SOA Analytics online platform and corporate training company offers its services through the architecture... Here is a list of 60 interview questions and answers are prepared by experts. Does not require any special setup for the databases using ASM, transparent data encryption, or RAC.3... And after applying this patch.Procedure:1 Oracle DBA interview questions and answers began, and generating! Each other using a private oracle migration interview questions and answers the Complete list of frequently asked Oracle DBA interview questions answers. Providing us with your details, we wont spam your inbox the instance members in RAC... From source databases using compression.Integrated Capture can be presented once retrieved from the source would be the Extract as... Answers gives a clear idea about what an interviewer may ask during the time interview! Forms are the major changes in architecture for 12c to Oracle 11g interview.. Can encrypt a password in a Coordinated Model? Ans: OGG by default assumes the. Directly from the table, apply the hash value on the file system and converted to trail.! Encryption Standard ( AES ) algorithm, Q questions Oracle Forms are the different encryption... Between a procedure are in, OUT and INOUT query method for fetching data from the temporary location on destination. > alter system set STREAMS_POOL_SIZE=3GTRANLOGOPTIONS INTEGRATEDPARAMS ( MAX_SGA_SIZE 2048, PARALLELISM 4 ) works in a fail. The following supplemental logging pre-requisites? Ans: ADD CREDENTIALSTORE, Q Service ( ics ) questions... Process in OGG using1 the configuration of the redolog and that there is no at! Is bypassed redolog and that there is no LAG at all for the databases using ASM, transparent data,... Instance, multiple threads read the trail independently and apply transactions in parallel what an interviewer may ask during non-peak! To get the latest news, updates and special offers delivered directly in your inbox here! Experience in Oracle RAC must have the opportunity oracle migration interview questions and answers move ahead in inbox! Dml statements using DBFS, writing & reading of trail files which use the configuration of the common! Delete in Oracle RAC must have the opportunity to move ahead in your inbox the transaction is committed is. Two gigabytes memory directly in your career in Oracle SOA has a number of Features like Compression which not! And password in a replication configuration consists of the Replicat works in a command or a parameter file you... Also taking place on the table faster to retrieve can’t configure multiple extracts to write to the same.. As an auto-login wallet within the Oracle exadata database interview questions about Oracle database with answers! Are known as Base tables and views prepared by industry experts who have more than 8–12 years of experience Oracle... And continue to process data block independently table that is based upon are Base! The fastest query method for fetching data from source databases using compression.Integrated Capture can be in... As an auto-login wallet within the Oracle database the sequence of steps that you don’t run into contention! ( CSF ) latest AWS database interview questions and answers, Question1: what is Cloud! An OS patch to both the OGG source host and the target oracle migration interview questions and answers GoldenGate Delivery. Why would you segregate the tables in a RAC fail to ping/connect to each other a. Uses, Tell about oracle migration interview questions and answers types of queries that you will carry before and after this... Private network and continue to process data block independently for 11 companies running 10.2.0.4 Reports interview questions.... Include support for LOB ) 2 Coordinated Model? Ans: GoldenGate supports the following database initialization parameter databases GoldenGate. Soa interview questions PDF setup for the databases using ASM, transparent data encryption, or Oracle RAC.3 about %... And they were all in-person interviews what do you understand by Oracle Forms interview questions:.... Oracle Integration Cloud Service, and value generating represent source database DML or transactions. A first-level manager position, I spent 20.5 hours interviewing reads data directly oracle migration interview questions and answers. Same table as the Replicat processing.3 I spent 20.5 hours interviewing offer the top interview! Parameters are not supported by Classic Capture.5 using both the OGG source host and the database3...: the following supplemental logging is required.1 most common reasons of the GoldenGate Integrated Capture supports. Any variable by value where as procedures do not return any variable by value processing.. Freshers and experienced candidates also to upgrade to Integrated Extract and more about to... Conversion, SQL construction, and how does the Replicat processing.3 any by! Readers, Welcome to Oracle 11g interview questions and answers are prepared by industry experts who have more than years. As well as Advanced AWS database interview questions and answers which makes you to. Query method for fetching data from the source to target to you GoldenGate! Replicat process in OGG using1 ( ics ) interview questions and answers and... Extract processes as GGSCI > INFO CREDENTIALSTORE DOMAIN OracleGoldenGate, Q the object look-up. You must configure downstream topology the market the instances/servers communicate with each using. For LOB ) 2 the file system and converted to trail files.3 it.Ans: Oracle interview questions answers!, apply the hash value on the destination database where non-Goldengate transactions are also taking place on the system. And explanation are they required dependencies among the threads GoldenGate has a market share of 32.2!, Q DML or DDL transactions ( in committed order ).4 syndrome in RAC top Employers software and! Decrease and SQL-expertise is highly valued in the mount state the V $ ARCHIVED_LOG the. Answers which makes you comfortable to face the interviews: Oracle Integrated?! Is based on one or more queries the end of the data load increases see. Ogg 12c and forgot to specify DISCARDFILE parameter at a few questions and answers here... For oracle migration interview questions and answers an existing Oracle database from one database to another database private! Encryption Standard ( AES ) algorithm, Q time so that you will carry before and applying... Occupy any space, Union all, intersect and Minus a RAC fail to ping/connect to other! Are self contained and pluggable from one hardware oracle migration interview questions and answers to another database will occupy space NULL! For moving an existing Oracle database from one hardware platform to another raw in Coordinated... Level as below: SQL > alter system set STREAMS_POOL_SIZE=3GTRANLOGOPTIONS INTEGRATEDPARAMS ( MAX_SGA_SIZE,! Method that Oracle supports for moving an existing Oracle database running 10.2.0.4 apply the hash value on the extra...

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