Upgrade session failed due to unexpected exception: System.Data.SqlClient.SqlException (0x80131904):
The instance of the SQL Server Database Engine cannot obtain a LOCK resource at this time. Rerun your statement when there are fewer active users. Ask the database administrator to check the lock and memory configuration for this instance, or to check for long-running transactions. at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) at System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async, Int32 timeout) .
We had attached SharePoint 2010 (MSSQL2008) Content DB, to SharePoint 2013(MSSQL2012) , and mounted to SP2013 Web Application.
After mounted we are suppose to get this error, How to fix this issue?
And when we open site collection getting blank page, ever we are not able to activate features at site collection level getting error (Sorry Something went wrong, an unexpected error occurred).
Any help will be appreciated.