Microland MS SQL DBA Interview Questions and Answers for Experienced

An Oracle Application Database Administrator is responsible for managing and maintaining the Oracle database used by Oracle Applications.

• Responsible for installation, configuration, and upgrading of Oracle database

• Ensures database security and performance optimization

• Manages backup and recovery processes

• Performs database monitoring and troubleshooting

• Responsible for user management and access control

• Works closely with ...read more

Client faced issue with concurrent request and resolved by increasing the number of processes.

• Client reported slow performance while running concurrent requests.

• Checked the number of processes and found it to be less than required.

• Increased the number of processes and tested the concurrent request again.

• Performance improved and issue resolved.

R12.2 has more features and improvements than R12.1

• R12.2 has a new online patching feature

• R12.2 has a new user interface

• R12.2 has improved security features

• R12.2 has enhanced mobile support

• R12.2 has a new tool for managing concurrent programs

Yes, Oracle Secure Backup is a tape backup management software for Oracle databases.

• Oracle Secure Backup provides centralized management of tape backup and recovery operations for Oracle databases.

• It supports various tape devices and media types.

• It offers encryption and compression options for backup data.

• It can be integrated with Oracle Recovery Manager (RMAN) for seamless backup and recovery.

• It also provides reportin

Forms may take time to load due to various reasons.

• Network latency

• Heavy database queries

• Large number of concurrent users

• Inefficient coding

• Insufficient hardware resources

Reports can run slow due to various reasons.

• Inefficient SQL queries

• Large data sets

• Inadequate hardware resources

• Poorly designed report layout

• Network latency

• Lack of indexing

• Database contention

• Insufficient memory allocation

• Outdated software versions

Index rebuild is important for improving database performance.

• Rebuilding indexes helps to remove fragmentation and improve query performance.

• It also helps to reduce disk I/O and improve overall database efficiency.

• Regular index rebuilds can prevent index corruption and improve database stability.

• Index rebuilds can be scheduled during off-peak hours to minimize impact on users.

• Examples of tools for index rebuilds includ

Input/output error indicates a problem with reading or writing data to a storage device.

• Check if the storage device is properly connected and functioning.

• Check if the file system is corrupted.

• Check if there is enough space on the storage device.

• Check if there are any hardware issues with the storage device.

• Check if there are any software issues with the operating system or application.

• Try to recover the data from backu

To add DMZ node, we need to configure the DMZ server and add it to the existing Oracle E-Business Suite environment.

• Configure the DMZ server with the required software and patches.

• Create a new context file for the DMZ node.

• Update the DMZ context file with the required parameters.

• Run the AutoConfig on the DMZ node.

• Add the DMZ node to the existing Oracle E-Business Suite environment.

• Configure the firewall to allow traffi...read more

A load balancer is a device that distributes network traffic across multiple servers to improve performance and availability.

• Load balancers can improve website or application performance by distributing traffic evenly across multiple servers.

• They can also improve availability by redirecting traffic to healthy servers in case of server failure.

• Load balancers can be hardware or software-based and can be configured to use...read more

Start stop sequence of ERP app and DB. Impact if sequence gets wrong.

• Start DB first, then ERP app

• Stop ERP app first, then DB

• Wrong sequence can cause data corruption or loss

• May result in incomplete transactions or errors during startup

To restore a deleted application top, use adadmin utility to recreate the application top.

• Use adadmin utility to recreate the application top

• Select option 2 (Maintain Applications Files menu)

• Select option 1 (Maintain Applications Files)

• Select option 2 (Copy Oracle Applications Files to the File System)

• Enter the application short name and version to recreate the application top

Oacore issue refers to problems encountered in the Oracle Application Framework (OAF) layer of Oracle E-Business Suite.

• Oacore issues can cause application performance problems, such as slow page load times or unresponsive pages.

• Common causes of Oacore issues include memory leaks, database connectivity problems, and configuration errors.

• To troubleshoot Oacore issues, DBAs can use tools like Oracle Enterprise Manager (OE...read more