Hi! In log file I see an error which was a few days ago:

2015-04-03 12:30:56,630 [7] ERROR umbraco.DataLayer.SqlHelper`1[[System.Data.SqlClient.SqlParameter, System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]] - [Thread 18] Error executing query SELECT * FROM icUrlTracker WHERE Is404 = 0 AND ForceRedirect = @forceRedirect AND RedirectRootNodeId = @redirectRootNodeId AND OldRegex IS NOT NULL ORDER BY Inserted DESC

System.InvalidOperationException: Timeout expired.  The timeout period elapsed prior to obtaining a connection from the pool.  This may have occurred because all pooled connections were in use and max pool size was reached.

   at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)

   at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)

   at System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry)

   at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)

   at System.Data.SqlClient.SqlConnection.Open()

   at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteReader(String connectionString, CommandType commandType, String commandText, SqlParameter[] commandParameters)

   at umbraco.DataLayer.SqlHelpers.SqlServer.SqlServerHelper.ExecuteReader(String commandText, SqlParameter[] parameters)

   at umbraco.DataLayer.SqlHelper`1.ExecuteReader(String commandText, IParameter[] parameters)

2015-04-03 12:30:56,631 [7] ERROR Umbraco.Core.UmbracoApplicationBase - [Thread 18] An unhandled exception occurred

umbraco.DataLayer.SqlHelperException: Umbraco Exception (DataLayer): SQL helper exception in ExecuteReader ---> System.InvalidOperationException: Timeout expired.  The timeout period elapsed prior to obtaining a connection from the pool.  This may have occurred because all pooled connections were in use and max pool size was reached.

   at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)

   at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)

   at System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry)

   at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)

   at System.Data.SqlClient.SqlConnection.Open()

   at Microsoft.ApplicationBlocks.Data.SqlHelper.ExecuteReader(String connectionString, CommandType commandType, String commandText, SqlParameter[] commandParameters)

   at umbraco.DataLayer.SqlHelpers.SqlServer.SqlServerHelper.ExecuteReader(String commandText, SqlParameter[] parameters)

   at umbraco.DataLayer.SqlHelper`1.ExecuteReader(String commandText, IParameter[] parameters)

   --- End of inner exception stack trace ---

   at umbraco.DataLayer.SqlHelper`1.ExecuteReader(String commandText, IParameter[] parameters)

   at InfoCaster.Umbraco.UrlTracker.Modules.UrlTrackerModule.UrlTrackerDo(Boolean ignoreHttpStatusCode) in c:\Users\kipusoep\Documents\GitHub\UrlTracker\Modules\UrlTrackerModule.cs:line 215

   at InfoCaster.Umbraco.UrlTracker.Modules.UrlTrackerModule.context_AcquireRequestState(Object sender, EventArgs e) in c:\Users\kipusoep\Documents\GitHub\UrlTracker\Modules\UrlTrackerModule.cs:line 53

   at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()

   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

This error occurred for 4 hours and then everything went back to normal. Now when I want to find a members or users can't I find it. If I resave the member, it is searched. But I have hundreds of members. Any ideas how to fix.

Tnaks