IBM Assessment: High Volume Data Migration v4 Intermediate Practice Exam: Medium Difficulty 2025

A financial services company is planning to migrate 50TB of customer transaction data from an on-premises Oracle database to IBM Db2 on Cloud. The migration window is limited to 72 hours, and the data must maintain referential integrity. During assessment, you identify that 30% of the data has quality issues. What should be your PRIMARY recommendation for the migration approach?

During a high-volume data migration project, you are using IBM InfoSphere DataStage to extract data from multiple heterogeneous sources. The job is processing 10 million records but consistently fails after processing 7 million records with an out-of-memory error. Which combination of approaches would BEST address this issue?

Your team is migrating a legacy mainframe system containing EBCDIC-encoded data with packed decimal fields to a modern cloud-based PostgreSQL database. During testing, you discover that 15% of numeric values are being incorrectly converted. What is the MOST likely root cause and appropriate solution?

A retail company needs to assess the feasibility of migrating 200 databases totaling 80TB from SQL Server to IBM Db2. The assessment must identify potential compatibility issues, estimate migration complexity, and determine resource requirements. Which IBM tool should you primarily use for this assessment phase?

You are implementing a migration using IBM InfoSphere Information Server where data must be extracted from SAP ERP, transformed to conform to a new schema, and loaded into IBM Cloud Pak for Data. The business requires data validation to ensure that customer account balances match between source and target systems. At which stage should you implement the balance validation checks for optimal performance and accuracy?

During a large-scale migration project, your IBM DataStage jobs are experiencing performance degradation when processing complex joins between three tables containing 50 million, 80 million, and 120 million rows respectively. The job currently uses hash partitioning on different keys for each dataset. What optimization technique would provide the MOST significant performance improvement?

Your organization is planning a phased migration of a 120TB data warehouse from Teradata to IBM Db2 Warehouse on Cloud. The migration strategy requires maintaining data synchronization between both systems for 6 months during parallel operation. Which IBM solution provides the MOST appropriate approach for this requirement?

During the assessment phase of migrating an e-commerce platform's customer database, you discover that 40% of email addresses fail validation rules, 25% of phone numbers have inconsistent formats, and 10% of customer records are duplicates. The business requires clean data in the target system. What is the BEST sequence of activities to address these issues?

You are troubleshooting an IBM InfoSphere DataStage job that migrates data from multiple Oracle databases to IBM Db2. The job completes successfully but takes 18 hours to process 5TB of data, which exceeds the allocated 12-hour window. Database and network monitoring show that neither is fully utilized. What is the MOST likely bottleneck and appropriate solution?

A healthcare organization is migrating patient records from multiple legacy systems to a centralized IBM Cloud-based platform. During migration planning, you identify that patient identifiers differ across source systems, creating a need for identity resolution. Additionally, HIPAA compliance requires audit trails of all data transformations. What combination of IBM tools and approaches would BEST address these requirements?