Sql error 18456 explicityly specified database

#Sql error 18456 explicityly specified database install
#Sql error 18456 explicityly specified database update
#Sql error 18456 explicityly specified database code
#Sql error 18456 explicityly specified database password

Setup completed with required actions for features. We know the sections and let us use the information available Other sections were not relevant in this troubleshooting so ignoring them. Here are the various sections in that file and their meaning. The information in this file would tell exact component which failed. Our failure was for instance MSSQLSERVER hence we need to go inside MSSQLSERVER folder and then look at Summary_.txt file there. Below вЂњOverall SummaryвЂќ we can also see each instance overall summary.ДЈ. In this case вЂњMSSQLSERVERвЂќ which is a default instance. We can see вЂњOverall summaryвЂќ and вЂњFinal resultвЂќ which tells the instance which got failure, if any. To determine the reason for failure, review the log files.Дў.

#Sql error 18456 explicityly specified database update

To determine the reason for failure, review the log files.ДЇinal result: The patch installer has failed to update the shared features.

I have highlighted important information which you need to review.ДЇinal result: The patch installer has failed to update the following instance: MSSQLSERVER. We looked at Summary_.txt which is located under the folder having date-time stamp. Here is the article from online documentation:ДЎ. Based on instance which had failure, we need to look at Summary file located under the instance name folder and dig further. In case of patching, we first look at Summary.txt file which gives overall picture for all instances which were attempted to patch. Whenever we troubleshoot SQL Server Setup/Patch related issue, we start looking at the log files to find exact error message which caused the failure. Let me start by explaining how do we troubleshoot installation/path failure issues. (This can happen with other features also so same can be followed to fix them as well). There was failure while upgrading PolyBase feature.

#Sql error 18456 explicityly specified database install

This was SQL Server 2016 SP2 and we were trying to install KB4524334 CU10 for SQL Server 2016 SP2. Recently we worked on a support case where we were having trouble installing SQL Server Patch. Note: It is recommended to take backup of all the files before making any changes.

#Sql error 18456 explicityly specified database code

VoilГ ! It works!ДISCLAIMER : THIS CODE AND INFORMATION IS PROVIDED 'AS IS' WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Д¬ONNECTION_OPTIONS = 'UseDefaultEncryptionOptions=false' create external data source with UseDefaultEncryptionOptions=false. drop external tableДROP EXTERNAL TABLE. Since there is no data loss, we should be OK to drop them. We need to modify data source to use a connection option CONNECTION_OPTIONS = вЂUseDefaultEncryptionOptions=falseвЂ™ДЇirst I needed to drop data source as it was used by external table. Here is the workaround to overcome such behavior. This is due to amount of data fetched by single query.

If we try to query 3 rows from external table, it works fine.ДЇROM.

WITH IDENTITY = 'polybaselogin', SECRET = Д¬REATE EXTERNAL DATA SOURCE SQLServer_DestinationDB Location given in data source is IP:Port of SQL Server 2014 instance.Д¬REATE DATABASE SCOPED CREDENTIAL SqlServerCredentials

Now, create external table in SQL Server 2019.

#Sql error 18456 explicityly specified database password

(note that I have selected column as char(5000) so that we fetch big chunk of data in each row)Д¬REATE LOGIN WITH PASSWORD = ,ДEFAULT_DATABASE =, DEFAULT_LANGUAGE =, CHECK_EXPIRATION = OFF, CHECK_POLICY = OFFДЄLTER SERVER ROLE ADD MEMBER In SQL Server 2014, create a login, create a database and then table inside it.Here are the steps to reproduce the error: Data source is created for SQL Server running 2016 or above.105082 Generic ODBC error: TCP Provider: An existing connection was forcibly closed by the remote host.ДЄdditional error : ErrorMsg: Communication link failure, SqlState: 08S01, NativeError: 10054. They informed us that when they query large amount of data by creating an external table in SQL Server 2019 with data source as a table in SQL Server 2014, they get below error.Д¬annot execute the query 'Remote Query' against OLE DB provider 'MSOLEDBSQL' for linked server '(null)'. While working with PolyBase feature, few of our customer reported an interesting issue. The error message which comes back is вЂњTCP Provider: An existing connection was forcibly closed by the remote hostвЂќ In this blog we are sharing an issue which can be seen while querying external table created in SQL 2019 with data source pointing to SQL Server 2014.