Slow bulk insert for table with many indexes

Question

I try to insert millions of records into a table that has more than 20 indexes.

In the last run it took more than 4 hours per 100.000 rows, and the query was cancell

Answer 1

You can disable and enable the indexes. Note that disabling them can have unwanted side-effects (such as having duplicate primary keys or unique indices etc.) which will only be found when re-enabling the indexes.

--Disable Index
ALTER INDEX [IXYourIndex] ON YourTable DISABLE
GO

--Enable Index
ALTER INDEX [IXYourIndex] ON YourTable REBUILD
GO