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Waves dressed in sapphire,
green eyes aglow –
Pulsing through me,
her currents flow –
Deep breath, exhales,
protruding through Icelandic vales –
Наши сердца,
переплетаются в одно.
All posts by Jon Culp
Sailing to Byzantium
That is no country for old men. The young
In one another’s arms, birds in the trees
– Those dying generations – at their song,
The salmon‐falls, the mackerel‐crowded seas,
Fish, flesh, or fowl, commend all summer long
Whatever is begotten, born, and dies.
Caught in that sensual music all neglect
Monuments of unageing intellect.
An aged man is but a paltry thing,
A tattered coat upon a stick, unless
Soul clap its hands and sing, and louder sing
For every tatter in its mortal dress,
Nor is there singing school but studying
Monuments of its own magnificence;
And therefore I have sailed the seas and come
To the holy city of Byzantium.
O sages standing in God’s holy fire
As in the gold mosaic of a wall,
Come from the holy fire, perne in a gyre,
And be the singing‐masters of my soul.
Consume my heart away; sick with desire
And fastened to a dying animal
It knows not what it is; and gather me
Into the artifice of eternity.
Once out of nature I shall never take
My bodily form from any natural thing,
But such a form as Grecian goldsmiths make
Of hammered gold and gold enamelling
To keep a drowsy Emperor awake;
Or set upon a golden bough to sing
To lords and ladies of Byzantium
Of what is past, or passing, or to come.
-William Butler Yeats
My First Podcast Talk
I gave a short talk about PowerBI for our internal company podcast.
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“Interpretation is imposed by others. Paintings are to be admired and contemplated [not named or explained]. If I had something to say I would write it down or say it; I don’t need painting for that.”
-Zdislaw Beksinski
Check Transactional Replication Status
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select [distributionHistory].comments [Comments] , isnull([Last Error].error_text,'') as [Last Error] , convert(datetimeoffset, [distributionHistory].[time]) [Last Synchronized Date] , [distributionAgent].publication [Publication Name] , [distributionAgent].publisher_db as [Publisher Database] , (case when [distributionHistory].runstatus = '1' then 'Start' when [distributionHistory].runstatus = '2' then 'Succeed' when [distributionHistory].runstatus = '3' then 'InProgress' when [distributionHistory].runstatus = '4' then 'Idle' when [distributionHistory].runstatus = '5' then 'Retry' when [distributionHistory].runstatus = '6' then 'Fail' else cast([distributionHistory].runstatus as varchar) end ) [Run Status] , sub.name [Subscriber] , [distributionAgent].subscriber_db [Subscriber Database] , (case when [distributionAgent].subscription_type = '0' then 'Push' when [distributionAgent].subscription_type = '1' then 'Pull' when [distributionAgent].subscription_type = '2' then 'Anonymous' else cast([distributionAgent].subscription_type as varchar) end ) [Subscription Type] , und.UndelivCmdsInDistDB [Undelivered Commands] from [distribution].[dbo].[MSdistribution_agents] as [distributionAgent] with (nolock) left join [distribution].[dbo].[MSdistribution_history] as [distributionHistory] with (nolock) on [distributionHistory].agent_id = [distributionAgent].id join ( select s.agent_id , MaxAgentValue.[time] , sum(case when xact_seqno > MaxAgentValue.maxseq then 1 else 0 end) as UndelivCmdsInDistDB from [distribution].[dbo].[MSrepl_commands] t with (nolock) join [distribution].[dbo].MSsubscriptions as s with (nolock) on ( t.article_id = s.article_id and t.publisher_database_id = s.publisher_database_id ) join ( select hist.agent_id , max(hist.[time]) as [time] , h.maxseq from [distribution].[dbo].MSdistribution_history hist with (nolock) join ( select agent_id , isnull(max(xact_seqno), 0x0) as maxseq from [distribution].[dbo].MSdistribution_history with (nolock) group by agent_id ) as h on ( hist.agent_id = h.agent_id and h.maxseq = hist.xact_seqno ) group by hist.agent_id , h.maxseq ) as MaxAgentValue on MaxAgentValue.agent_id = s.agent_id group by s.agent_id , MaxAgentValue.[time] ) und on [distributionAgent].id = und.agent_id and und.[time] = [distributionHistory].[time] join [master].[sys].[servers] as sub with (nolock) on [distributionAgent].subscriber_id = sub.server_id outer apply ( select top 1 error_text from [distribution].[dbo].MSrepl_errors with (nolock) where id = [distributionHistory].error_id order by time desc ) as [Last Error]; |
T-SQL Rename Logical and Physical Database Files
I used to get really nervous about renaming database files, which I think is an appropriate response. Changing the attributes of the database’s physical objects does sound a bit scary on the surface, but once you’ve done it a few times you’ll realize it’s easy to do, and easy to fix if you make a mistake. This simple script template shows the basic steps of the process.
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-- USE [master]; GO --Change logical file names. ALTER DATABASE [My_Database] MODIFY FILE(NAME = [old_name_data], NEWNAME = [new_name_data]); ALTER DATABASE [My_Database] MODIFY FILE(NAME = [old_name_log], NEWNAME = [new_name_log]); GO --Disconnect all existing sessions. ALTER DATABASE [My_Database] SET SINGLE_-- USER WITH ROLLBACK IMMEDIATE; GO --Change database to OFFLINE mode. ALTER DATABASE [My_Database] SET OFFLINE; GO /****************************************** STOP! NOW RENAME THE PHYSICAL FILES ON DISK ******************************************/ --Point databases at new phyisical files. ALTER DATABASE [My_Database] MODIFY FILE(NAME = 'new_name_data', FILENAME = 'D:\MSSQL13.MSSQLSERVER\MSSQL\DATA\new_name_data.mdf'); ALTER DATABASE [My_Database] MODIFY FILE(NAME = 'new_name_log', FILENAME = 'L:\MSSQL13.MSSQLSERVER\MSSQL\DATA\new_name_log.ldf'); GO --Change database to ONLINE mode. ALTER DATABASE [My_Database] SET ONLINE; GO --Reopen connections to all users ALTER DATABASE [My_Database] SET MULTI_-- USER; GO |
Machine Learning Explained in Interactive Visualizations
I came across this website that has an excellent explanation for introduction to machine learning. The visualizations are very nice and easy to understand.
Example Manufacturing Dashboard in PowerBI
Can’t RDP to Server after Windows Patch (CredSSP)
I was preparing to remote into a virtual machine to do some maintenance when I encountered an error.
“An authentication error has occurred.
The function requested is not supportedRemote computer: [Computer Name]
This could be due to CredSSP encryption oracle remediation.
For more information, see https://go.microsoft.com/fwlink/?linkid=866660”
Information from the link in the error:
Credential Security Support Provider protocol (CredSSP) is an authentication provider that processes authentication requests for other applications.
A remote code execution vulnerability exists in unpatched versions of CredSSP. An attacker who successfully exploits this vulnerability could relay user credentials to execute code on the target system. Any application that depends on CredSSP for authentication may be vulnerable to this type of attack.
This security update addresses the vulnerability by correcting how CredSSP validates requests during the authentication process.
Options:
The bottom line is that in order to RDP into the target server both computers need to have the update installed. In my case, my local machine was updated, but the target machine was not yet updated. This target machine did not have automatic updates turned on and was an Azure VM. I could have contacted support, or turned on automatic updates from the portal, but the reality was I needed to get into the machine quickly to handle an emergency fix. Due to the simple architecture (stand-alone VM) I could not push the patch via SCCM or GPO.
Work-around 1:
Continue reading Can’t RDP to Server after Windows Patch (CredSSP)
Power BI On-Premises Data Gateway Service Failures
Power BI On-Premises Data Gateway is a windows service (PBIEgwService) that moves data from on-premises to the cloud, and also is used by Power BI Report Server. The data gateway has been failing nearly daily. I’ve changed the service settings to restart upon failure with a 3 minute buffer. If this does not resolve the issue I might set up a heart-beat process that checks the health of the service and if it’s ever not running it will start it.
