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I applied via Naukri.com and was interviewed before Mar 2023. There were 3 interview rounds.
General dba related questions
RMAN backups can be performed using commands like BACKUP DATABASE, BACKUP ARCHIVELOG, BACKUP CONTROLFILE, etc.
BACKUP DATABASE: used to backup the entire database
BACKUP ARCHIVELOG: used to backup archived redo logs
BACKUP CONTROLFILE: used to backup the control file
BACKUP TABLESPACE: used to backup specific tablespaces
BACKUP AS COPY: used to create a physical copy of data files during backup
To create a schema, use CREATE SCHEMA statement. Data types include VARCHAR2, NUMBER, DATE, etc.
Create a schema using CREATE SCHEMA statement
Specify data types for columns when creating tables
Common data types include VARCHAR2, NUMBER, DATE, etc.
Use appropriate data types based on the type of data being stored
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posted on 22 May 2023
I applied via Referral and was interviewed before May 2022. There were 4 interview rounds.
I applied via LinkedIn and was interviewed in Sep 2023. There were 2 interview rounds.
High availability for database ensures minimal downtime and continuous access to data.
Implementing clustering and replication to distribute workload and provide failover
Setting up automated backups and monitoring systems to quickly identify and resolve issues
Utilizing load balancers to evenly distribute traffic and prevent overload
Implementing disaster recovery plans to quickly recover from unexpected outages
posted on 29 Jun 2023
Basics topics of aptitude in mcq format
posted on 22 May 2023
I applied via Referral and was interviewed before May 2022. There were 4 interview rounds.
posted on 18 Nov 2021
I applied via Naukri.com and was interviewed in May 2021. There were 3 interview rounds.
Data protection techniques are essential for safeguarding sensitive information from unauthorized access or theft.
Encryption of data at rest and in transit
Access controls and authentication mechanisms
Regular backups and disaster recovery plans
Data masking and anonymization
Monitoring and auditing of database activity
Hop Amp CPU is a performance issue caused by excessive CPU usage in a database server.
Hop Amp CPU occurs when a database server is overloaded with too many queries or transactions.
It can also be caused by poorly optimized queries or inefficient database design.
Hop Amp CPU can lead to slow response times, system crashes, and other performance issues.
To prevent Hop Amp CPU, database administrators should monitor server p...
Various methods to solve spool space issue
Optimize queries to reduce spool space usage
Increase spool space allocation for the user
Use temporary tables to reduce spool space usage
Use compression techniques to reduce spool space usage
Avoid Cartesian joins to reduce spool space usage
Data dictionary tables store metadata about database objects. History data is stored in audit tables or separate history tables.
Data dictionary tables contain information about database objects such as tables, columns, indexes, and constraints.
History data can be stored in audit tables that track changes to data over time.
Separate history tables can also be used to store historical data.
Examples of data dictionary tabl...
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