DBCC INTEGRITY CHECK ERROR:Msg 8948, Sev 16, State 6, Line 1 : Database error: Page (1:36729) is marked with the wrong type in PFS page (1:32352). PFS status 0x40 expected 0x60. [SQLSTATE 42000]

I got the below when on one of the Always on Databases while we are running DBCC INTEGRITY CHECK job.
We need to bring the database to single user mode and need to execute REPAIR_ALLOW_DATA_LOSS. However this is not going to delete any data.

(https://www.sqlskills.com/blogs/paul/pfs-corruption-after-upgrading-from-sql-server-2014/)







Comments

Post a Comment

Popular posts from this blog

System.Data.SqlClient.SqlException (0x80131904): Execution Timeout Expired. The timeout period elapsed prior to completion of the operation or the server is not responding. ---> System.ComponentModel.Win32Exception (0x80004005): The wait operation timed out

I got this error in one of my client's production environment, this type of issues might come up when we are not properly updating statistics. System.Data.SqlClient.SqlException (0x80131904): Execution Timeout Expired.  The timeout period elapsed prior to completion of the operation or the server is not responding. ---> System.ComponentModel.Win32Exception (0x80004005): The wait operation timed out Workaround: Please run UPDATE STATISTICS command in all the tables on a particular database EXEC sp_updatestats So in my scenario UPDATE STATISTICS on all the tables resolved the issue.
Read more

Pre login Handshake or Connection Timeout Period

Image
Service was unable to open new database connection when requested. SqlException: Connection Timeout Expired.  The timeout period elapsed while attempting to consume the pre-login handshake acknowledgement.  This could be because the pre-login handshake failed or the server was unable to respond back in time.  The duration spent while attempting to connect to this server was - [Pre-Login] initialization=16225; handshake=14840; Connection string - Data Source=sqlserverintancenamehere;Initial Catalog=CatalogNamehere;Integrated Security=True;Persist Security Info=False;Max Pool Size=1000;Connect Timeout=20;Load Balance Timeout=120;Packet Size=4096;Application Name=Applicationname hereBusinessLayerHost.exe;Workstation ID=HostnameHere setspn -a MSSQLSvc/hostname.doaminname.net:1433 ServiceAccountNameHere need to run the above command in a command prompt, most of the time you would NOT have permissions to run this, please check with Active Directory Team or Wi...
Read more

Transparent Data Encryption(TDE) with Master Key and Certificate in SQL Server

Image
/*  There is only one master key, you can not create  multiple */ use master go CREATE MASTER KEY ENCRYPTION BY PASSWORD = 'StrongPasswordHere' GO /*  Creating certificate in the master database, after creating  master key */ use master GO CREATE CERTIFICATE MyFirstCert WITH SUBJECT = 'TDECertificate' ; GO /* Enable databse encryption key but you can not see under this specific user database. */ USE G GO CREATE DATABASE ENCRYPTION KEY WITH ALGORITHM = AES_128 ENCRYPTION BY SERVER CERTIFICATE MyFirstCert GO ALTER DATABASE G SET ENCRYPTION ON;  /*  Backing up certificate */ use master go BACKUP CERTIFICATE MyFirstCert TO FILE = 'C:\Certificates\MyFirstCert' WITH PRIVATE KEY ( FILE = 'C:\Certificates\MyFirstCertKey' , ENCRYPTION ...
Read more