10+ Oracle Apps DBA Interview Questions and Answers

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 developers and system administrators

• Provides support and r...read more

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

Yes, we can apply EBS patches using adpatch in EBS 12.2.

• Adpatch is the standard utility for applying patches in EBS.

• It can be used to apply patches to both the application and database tiers.

• Adpatch can be run in interactive or non-interactive mode.

• It is recommended to apply patches in a test environment before applying them in production.

• Adpatch logs can be found in the $APPL_TOP/admin//log directory.

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.

User login flow for ERP involves authentication, authorization, and session management.

• User enters credentials on login page

• Credentials are verified against database

• If credentials are valid, user is authenticated and authorized to access ERP modules

• A session is created for the user

• User can access ERP modules until session expires or user logs out

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 include Oracle Enterprise Manager and SQL*Plus.

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 reporting and monitoring features for backup operations.

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

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 traffic between the DMZ node and the internal network.

• Test the D...read more

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 backups or use data recovery tools.

To troubleshoot EBS R12.2 login issue, check for incorrect login credentials, session timeout, browser cache, and server connectivity.

• Verify the correctness of login credentials entered by the user.

• Check for session timeout settings in EBS R12.2.

• Clear browser cache and cookies to eliminate any login issues caused by stored data.

• Ensure proper server connectivity to the EBS R12.2 instance.

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

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

To add a RAC node in 19c DB, you need to run the 'addNode.sh' script on the new node.

• Ensure the new node meets all the prerequisites for adding to the RAC cluster.

• Run the 'addNode.sh' script on the new node to add it to the existing RAC cluster.

• Verify the addition of the new node by checking the cluster status and resources.

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 (OEM) and log files to identify the root cause of the problem...read more