Home/ Questions/Q 182215
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-11T14:54:02+00:00

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

  • 0

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 cancelled after 3½ days…

Do you have any suggestions about how to speed this up.

(I suspect the many indexes to be the cause. If you also think so, how can I automatically drop indexes before the operation, and then create the same indexes afterwards again?)

Extra info:

  • The space used by the indexes is about 4 times the space used by the data alone
  • The inserts are wrapped in a transaction per 100.000 rows.

Update on status:

The accepted answer helped me make it much faster.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 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
    • 0