That's a little too vague of a question, but yes, Postgres should be able
to handle things just fine. The amount of SAP tools and SAP-supporting ETL
tools that also support Postgres should be a strong encouragement. I'd
recommend looking at the specific tools you would use and confirming they
have Postgres support built in. Then try and find use cases / complaints
for those specific items.
Cheers,
Greg
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Crunchy Data - https://www.crunchydata.com
Enterprise Postgres Software Products & Tech Support