> For the complete documentation index, see [llms.txt](https://awsnotes.dendron.so/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://awsnotes.dendron.so/migration-and-transfer/aws-database-migration-service/topics/troubleshooting-and-diagnostic-support.md).

# Troubleshooting and diagnostic support

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This page was generated from content adapted from the [AWS Developer Guide](https://github.com/awsdocs/aws-dms-user-guide.git)
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## Working with the diagnostic support AMI

* **Note**\
  If you experience performance issues with your Oracle source, you can evaluate the read performance of your Oracle redo or archive logs to find ways to improve performance. For more information, see [Evaluating read performance of Oracle redo or archive logs](https://github.com/kevinslin/aws-reference-notes/blob/main/services/aws_database_migration_service/CHAP_Troubleshooting.md#CHAP_Troubleshooting.Oracle.ReadPerformUtil).