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Oracle 19.17 Datawarehousing Exadata X8: best parameters

in Database DataWarehousing (MOSC) 5 commentsAnswered ✓

Hello Communauty,

We have mainly OLTP databases on our X8 Exadata but we have 2 databases used for DWH.

The jobs for building the dwh are taking lot of time and we are looking for some advise to optimize these kind of queries that make lot of hash join between huge tables to populate final tables.

Application owner ask us to create a database with db block size at 32K in place of 8K.

We don't really think the Exadata optimizer will work correcty if we set a different block size than 8k.

Do you have some experience using DWH on an exadata ? Some advise about specific parameters we can set to improve performance for such operation?

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