Allow Users to Access a Table even when New Indexes are being created

When you are creating a new index on a table, Table locks are applied for the duration of the index operation. For large tables, index creations can take a longer time and this prevents user access to the table till the index gets created.

However if you want to allow users to access the table even when new indexes are being created, you can do so using the ONLINE option. Here’s a query that shows how:

ON Purchasing.VendorAddress(AddressTypeID)
Note: By default, the ONLINE option is set to OFF.

About The Author

Suprotim Agarwal, MCSD, MCAD, MCDBA, MCSE, is the founder of DotNetCurry, DNC Magazine for Developers, SQLServerCurry and DevCurry. He has also authored a couple of books 51 Recipes using jQuery with ASP.NET Controls and a new one recently at The Absolutely Awesome jQuery CookBook.

Suprotim has received the prestigous Microsoft MVP award for nine times in a row now. In a professional capacity, he is the CEO of A2Z Knowledge Visuals Pvt Ltd, a digital group that represents premium web sites and digital publications comprising of Professional web, windows, mobile and cloud developers, technical managers, and architects.

Get in touch with him on Twitter @suprotimagarwal, LinkedIn or befriend him on Facebook

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