Cargoflash Infotech Database Developer Interview Questions and Answers

Primary and standby databases can be synced using Data Guard in Oracle.

• Configure Data Guard on primary and standby databases

• Enable redo transport services

• Monitor and resolve any synchronization issues

• Perform switchover or failover when necessary

Seeking new challenges and growth opportunities in a dynamic environment.

• Looking for new challenges to enhance my skills and knowledge

• Seeking growth opportunities for career advancement

• Interested in working in a more dynamic and innovative environment

To patch specific db components to reduce downtime, follow these steps:

• Identify the specific components that need to be patched

• Plan the patching process during a scheduled maintenance window

• Backup the database before applying patches

• Apply patches to the specific components one by one

• Test the patched components to ensure they are functioning correctly

• Monitor the database for any issues post-patching

SQL architecture refers to the structure and components of a SQL database system.

• SQL architecture includes components like storage engine, query processor, and buffer manager.

• The storage engine manages data storage and retrieval, while the query processor processes SQL queries.

• The buffer manager handles caching and memory management to optimize performance.

• Examples of SQL architectures include MySQL, Oracle, and SQL Se

To add a diskgroup in disks, use the CREATE DISKGROUP command in Oracle ASM.

• Ensure that the disks are initialized and partitioned

• Use the ASMCA (ASM Configuration Assistant) or ASMCMD (ASM Command-Line Utility) to create the diskgroup

• Specify the diskgroup name, redundancy level, and the disks to be included in the diskgroup

• Example: CREATE DISKGROUP dg1 NORMAL REDUNDANCY DISK '/dev/sdb1', '/dev/sdc1'

Real Application Cluster (RAC) is a cluster database with shared disk architecture.

• RAC allows multiple instances to access a single database simultaneously.

• It provides high availability and scalability.

• RAC uses Oracle Clusterware to manage the cluster.

• Load balancing and failover are automatic in RAC.

• RAC requires additional hardware and software licenses.