How to avoid connectiontimeout exception ?

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SQL-Server-2012

I had a table "TRnasaction";
having fields, SlNo, Date,Currency, BuyRate,SellRate,CustomerID

( and this table have more than 1 million records( 1,766,568,987) records,
During Feching it showing the ConnectionTimeOutException, these records

What I have tried:

Select SlNo, Date, CurrencyID, BuyRate,SellRate,CustomerID from TRANSACTION T
inner join CURRENCY C on T.CurrencyID=C.CurrencyID
inner join CUSTOMER CS on T.CustomerID=CS.CustomerID

Posted 21-Aug-16 3:36am

SwethaVijayan

Updated 21-Aug-16 19:08pm

v2

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Mehdi Gholam · Answer 1 · 2016-08-21T06:14:00

Solution 1

0) Increase the SQlCommand.CommandTimeout : SqlCommand.CommandTimeout Property (System.Data.SqlClient)[^]
1) Query less data (you don't need to show 1 billion records)
2) Optimize your indexes based on your query pattern, use the SQL Profiler : How To: Use SQL Profiler[^]
3) If possible partition your data to lower the table size : Create Partitioned Tables and Indexes[^]

Posted 21-Aug-16 6:14am

Mehdi Gholam

Comments

Maciej Los 21-Aug-16 13:59pm

Short And To The Point!
5!

Mehdi Gholam 21-Aug-16 14:01pm

Thanks Maciej!

Daniel Jones · Answer 2 · 2016-08-21T19:08:00

Solution 2

You can append ;Connection Timeout=30 to your connection string and specify the value you wish.
SqlConnection.ConnectionTimeout Property (System.Data.SqlClient)

A value of 0 indicates no limit, and should be avoided in a ConnectionString because an attempt to connect waits indefinitely.

Posted 21-Aug-16 19:08pm

Daniel Jones