SQL holds a lot of cached information in tempdb. Until it’s cleared it won’t allow tempdb to be shrunk. So here’s a quick script you might have some joy with (obviously be aware that you will suffer the cost of losing this cached information) (thanks to MSDN);
DBCC FREESYSTEMCACHE ( ‘ALL’)
DBCC SHRINKDATABASE (tempdb,10)
SELECT GetDate(),percent_complete, start_time, status, command, estimated_completion_time, cpu_time, total_elapsed_time
FROM sys.dm_exec_requests where command = ‘DbccFilesCompact’
SQL Server 2016 allows you to backup a database to Azure Storage. I found the information about this to be disjoint at best. So, if you want to do an old style (non-snapshot) backup of a database this is how I achieved it;
My Server is running on a Virtual Machine in on the same Azure Resource Group as the storage account, I’m not too concerned about SQL knowing the storage account keys, so I’m going to show the shortest path to getting this working
Assume we’re backing up a Database called Products.
- Create Storage Account – Create a ‘standard’ non premium storage account. Don’t be tempted to use premium, it will not work. Let’s call it sqlnoprembackup
- Create a container in the blob storage, perhaps ‘backupsql1’. Grab the full path to the container, if you’re using the portal select the container and view the properties. In this example it is; ‘https://sqlnoprembackup.blob.core.windows.net/backupsql1’
- Grab the account name and key for the storage account (Access Keys if you’re using the portal). Here it is sqlnoprembackup and the first long key.
- Create the certificate on SQL Server, let’s call it backupstorage;
IF NOT EXISTS
(SELECT * FROM sys.credentials
WHERE name = ‘backupstorage’)
CREATE CREDENTIAL [backupstorage] WITH IDENTITY = ‘sqlnoprembackup’
,SECRET = ‘<insert secret storage key from (3) here>’;
- Backup the database, use the full path to the container from (2). Note stats=5 will display the % progress at 5% internals in the messages tab;
BACKUP DATABASE Products
TO URL = ‘https://sqlnoprembackup.blob.core.windows.net/backupsql1/products.bak’
WITH CREDENTIAL = ‘backupstorage’
,STATS = 5;
- Run it. Yay.
Restoring the database
To do a full restore of the database;
- Take the database offline;
ALTER DATABASE Products SET OFFLINE WITH NO_WAIT
- To restore the database;
RESTORE DATABASE Products FROM URL = ‘https://sqlnoprembackup.blob.core.windows.net/backupsql1/products.bak’
WITH CREDENTIAL = ‘backupstorage’, REPLACE, STATS=5
NB, take a look at Snapshot backups, it’s a much better solution. Sometimes, as in my case, it’s not available and this hybrid approach works quite nicely.
I had the blood-drawn-from-face moments when a database stated is was ‘pending recovery’. Ultimately the transaction log file was broken. Actually I didn’t care about that because I knew it was pretty much all read-only data. So how to recover it? I tried various recovery techniques but the server was adamant, ‘restore from backup’. Well, I couldn’t do that either. So finally I found this little nugget of DDL, create a new database using the existing data files but with a new transaction log;
CREATE DATABASE [<new dbname>]
( NAME = N'<filename>’, FILENAME = N'<path to>.mdf’ ),
( NAME = N'<filename2>’, FILENAME = N'<path to 2nd>.mdf’ )
Whilst trying to insert a new row via a TableEntity derived class I hit a strange error;
‘one of the request inputs is out of range’
Looking at my object it all seemed fine to me. The problem was that I had a DateTime property that I had not set. Although it was defaulting to the minimum date time Azure did not enjoy that. So I simply ensure that date property has a reasonable value in it and problem solved.
I’ve no insight into what is in or out of the Microsoft Surface Phone or if it even exists. However, I was thinking what could it realistically do to be game changing. Well how about this. When undocked you can use UWP apps. Fine, that 1% of the apps the world wants but typically enough to read your emails and surf the odd web page. When you the dock the phone is able to run win32 apps. So you really would get a “full”, if maybe slightly underpowered, laptop. That really would be a legitimate reason to own one.
Jen Simmons CSS Grid