Hi @DEV2023
Since you mentioned that your export operation is repeatedly getting stuck from the portal, I recommend trying the export through SQLPackage.
This can be a best bet solution for many scenarios to overcome limitations on the database size and also to export SQL DB via private endpoint.
Here is detailed blog on “Using SQLPackage to import or export SQL Server and Azure SQL DB “ Using SQLPackage to import or export SQL Server and Azure SQL DB - Microsoft Community Hub
Please note, The Azure SQL Database Import/Export service provides a limited number of compute virtual machines (VMs) per region to process import and export operations. The compute VMs are hosted per region to make sure that the import or export avoids cross-region bandwidth delays and charges. If too many requests are made at the same time in the same region, significant delays can occur in processing the operations. The time that's required to complete requests can vary from a few seconds to many hours.
Additionally, exporting large tables without clustered indexes can be very slow or even cause failure. This behavior occurs because the table can't be split up and exported in parallel. Instead, it must be exported in a single transaction, and that causes slow performance and potential failure during export, especially for large tables.
Also, in case if you are using private link to export the DB, you need to approve manually the new private endpoint connection to complete the export operation as shown below in https://learn.microsoft.com/en-us/azure/azure-sql/database/database-import-export-private-link?view=azuresql#limitations documentation, if you do not approve those new private endpoints after starting the export; the export operation likely to get stuck.
Hope this help!
Let us know if you need any additional information.
Thank you!