Top Oracle GoldenGate Interview Questions (2024)
User can replicate, filter, and transform data from one database into another database using a software product called Oracle GoldenGate.
What is Oracle GoldenGate?
What are the advantages of Oracle GoldenGate?
What re the components of Oracle GoldenGate?
How is data transformation handled by Oracle GoldenGate?
How should Oracle GoldenGate be configured?
In Oracle GoldenGate, what does a trail file mean?
How is data conflict handled by Oracle GoldenGate?
How does Oracle GoldenGate maintain the integrity and consistency of the data?
What distinguishes Oracle Data Integrator (ODI) from Oracle GoldenGate?
What are the different ways to identify and fix the are Oracle GoldenGate errors?
What kinds of replication does Oracle GoldenGate support?
What is an Oracle GoldenGate data pump?
Q: What is Oracle GoldenGate?
Ans:
In order to facilitate high-performance and less disruptive data flow between diverse systems, Oracle GoldenGate provides real-time data integration and replication solutions. It offers continuous data streaming, real-time data synchronization, and data replication with transaction integrity.
Q: What are the advantages of Oracle GoldenGate?
Ans:
Oracle GoldenGate offers advantages such as improved data availability, scalability, and flexibility, as well as decreased data delay, downtime, and risk.
Q: What re the components of Oracle GoldenGate?
Ans:
Oracle GoldenGate is made up of the following parts:
Extract
Data is extracted from source systems and written to a trail file via extract.-
Replicat
Data from the trail file is read by Replicat and applied to the target systems. -
Manager
The Manager is in charge of managing and keeping an eye on the GoldenGate activities. -
Data Pump
To control the flow of data over the network, utilize Data Pump.
Q: How is data transformation handled by Oracle GoldenGate?
Ans:
Using both built-in and custom transformation functions, Oracle GoldenGate can manage data transformation. Mathematical functions, date and time manipulation, and string manipulation are all built-in features. The GoldenGate processes can be used to run custom transformation functions that were written in SQL or PL/SQL.
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Q: How should Oracle GoldenGate be configured?
Ans:
Oracle GoldenGate can be set up using either the graphical user interface or the GGSCI command-line interface. The configuration includes configuring the data sources and targets, Extract, Replicat, Manager, and Data Pump operations, as well as the data mapping and filtering criteria.
Q: In Oracle GoldenGate, what does a trail file mean?
Ans:
An Oracle GoldenGate trail file is a binary file used to store the data that was gathered from the source system. It includes a series of records that show the modifications made to the underlying data. The Replicat process applies the changes to the target system using the trail file.
Q: How is data conflict handled by Oracle GoldenGate?
Ans:
Oracle GoldenGate uses mechanisms for conflict detection and resolution to address data conflicts. GoldenGate implements a conflict resolution mechanism based on user-defined rules when a dispute is discovered. Determining the setup will determine whether the resolution is automatic or manual.
Q: How does Oracle GoldenGate maintain the integrity and consistency of the data?
Ans:
By collecting and replicating data changes in real-time, Oracle GoldenGate maintains data consistency and integrity. To make sure that every change is recorded and provided as a single, atomic transaction, it makes use of transactional capture and delivery. Additionally, it offers techniques for conflict identification and resolving to guarantee that data conflicts are handled either automatically or manually.
Q: What distinguishes Oracle Data Integrator (ODI) from Oracle GoldenGate?
Ans:
Both Oracle's Oracle GoldenGate and Oracle Data Integrator (ODI) are data integration tools. The primary distinction between the two is that ODI is intended for batch-oriented data integration and transformation, whereas GoldenGate is intended for real-time data replication and synchronization.
Q: What are the different ways to identify and fix the are Oracle GoldenGate errors?
Ans:
Use the GoldenGate Error Codes and Messages reference guide and the GoldenGate Log File reference guide to investigate Oracle GoldenGate errors. These manuals offer details on typical issues and how to fix them. Additionally, users can use GoldenGate diagnostic tools like the Oracle GoldenGate Veridata tool and the GGSCI command-line interface.
Q: What kinds of replication does Oracle GoldenGate support?
Ans:
Unidirectional, bidirectional, and cascade replication are just a few of the replication types that Oracle GoldenGate provides.
Q: What is an Oracle GoldenGate data pump?
Ans:
An Oracle GoldenGate process called a "data pump" handles the the process of transferring data over the network. It can control the data flow between source and target systems, as well as compress and encrypt data.