![]() Making the query run faster is the recommended first target of your troubleshooting. That means that the query runs longer than the pre-defined query time-out value. Troubleshooting stepsīy far, the most common reason for query time-outs is underperforming queries. For more information, see Query time-out is not the same as connection time-out. The latter controls how long to wait for a successful connection and isn't involved in query execution. Query time-out is different from a connection time-out property. In VBA (Excel), it's set through the property.In OLEDB, it's set through the DBPROP_COMMANDTIMEOUT property on the DBPROP structure.In Java Database Connectivity (JDBC) API, it's set through the setQueryTimeout method.In ODBC API, it's set through the SQL_ATTR_QUERY_TIMEOUT attribute in the SQLSetStmtAttr function.NET Framework, the time-out value is set on the CommandTimeout property. If the time-out value on the application side is set to 0 (no time limit), the Database Engine will execute the query until it's completed. ![]() On the SQL Server side, a query cancellation from the client side causes an Attention event, error 3617 ( MSSQLSERVER_3617). The application sets a time-out value and if the time out is reached, it cancels the query. These errors occur on the application side. The timeout period elapsed prior to completion of the operation or the server is not responding. If the query doesn't return any data within the configured time-out value (typically 30 seconds), the application cancels the query and generates one of these error messages: Assume that an application queries data from a SQL Server database.
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