Basic Oracle DBA Interview Questions for Freshers
- Mention Oracle DBA Characteristics.
- What is Oracle?
- What is an Oracle Database?
- What is an Oracle index?
- Why is the index used?
- Who is responsible to update the indexes?
- What are the various databases available in the market?
What are the common Oracle DBA tasks?
Common Oracle DBA Tasks
- Installing Oracle software.
- Creating Oracle databases.
- Performing upgrades of the database and software to new release levels.
- Starting up and shutting down the database.
- Managing the database’s storage structures.
- Managing users and security.
- Managing schema objects, such as tables, indexes, and views.
What are the DBA views in Oracle?
The Oracle DBA views encapsulate the most important Oracle metadata with details about tables, indexes, the SGA and the physical storage. The best way to use the DBA views is to get the DBA reference poster where the important DBA views and columns are highlighted.
How can I be a good DBA in Oracle?
Are there steps I can follow to become an Oracle DBA?
- Step 1 Do some research about the role.
- Step 2 Study the basics of database administration.
- Step 3 Take training courses.
- Step 4 Learn about related technologies.
- Step 5 Look for database developer positions.
- Step 6 Take advanced training.
- Step 7 Get certified.
What are the skills required for Oracle DBA?
Here’s a checklist of eight job requirements in which a beginner Oracle DBA should build expertise:
- Installing and configuring Oracle.
- Basic monitoring and tuning.
- Backing up and recovering databases.
- Basic understanding of database security issues.
- Database design.
- Good knowledge of DBMS series of packages.
What is the difference between checkpoint and SCN?
Checkpoint is the concept/background process while SCN is like serial number in our table.. the system change number (SCN) is Oracle’s clock – every time we commit, the clock increments. The SCN just marks a consistent point in time in the database.
What are DBA responsibilities?
A Database Administrator (DBA) is individual or person responsible for controlling, maintenance, coordinating, and operation of database management system. Their role also varies from configuration, database design, migration, security, troubleshooting, backup, and data recovery.
What are the DBA tables in Oracle?
DBA_TABLES describes all relational tables in the database. Its columns are the same as those in ALL_TABLES .
What is the difference between V views and DBA view?
DBA_ / USER_ / ALL_ views are built on the data dictionary – they’re not available if the database is not mounted and opened. V$ views tend to run against the instance, and therefore may be available if the database is not mounted, or is not mounted and opened, depending on the nature of the view.
What are the roles and responsibilities of a DBA?
The Key Responsibilities of a Database Administrator
- Software installation and Maintenance.
- Data Extraction, Transformation, and Loading.
- Specialised Data Handling.
- Database Backup and Recovery.
- Security.
- Authentication.
- Capacity Planning.
- Performance Monitoring.
What qualities make a good Oracle DBA?
The DBA must maintain the data about the data.
What does an Oracle DBA do?
Oracle DBA Overview. The Oracle grid architecture pools large numbers of servers, storage, and networks into a flexible, on-demand computing resource for enterprise computing needs. The grid computing infrastructure continually analyzes demand for resources and adjusts supply accordingly.
How to become Oracle Applications DBA?
Pick Your Starting Operating System Wisely. When you are new to Oracle,you want to minimize the number of unknowns you throw into the mix.
What is Oracle DBA?
Yes, Oracle DBA is a relational database management system. The main objective of this is to store, manage, and retrieve information efficiently to deliver high performance. We have the perfect professional Oracle DBA Training Course for you!
