PFS Corruption When Moving From SQL Server 2014

Paul Randal notes a bug in SQL Server 2014:

I’m seeing reports from a few people of DBCC CHECKDB reporting PFS corruption after an upgrade from SQL Server 2014 to SQL Server 2016 or later. The symptoms are that you run DBCC CHECKDB after the upgrade and get output similar to this:

Msg 8948, Level 16, State 6, Line 5
Database error: Page (3:3863) is marked with the wrong type in PFS page (1:1). PFS status 0x40 expected 0x60.
Msg 8948, Level 16, State 6, Line 5
Database error: Page (3:3864) is marked with the wrong type in PFS page (1:1). PFS status 0x40 expected 0x60.
CHECKDB found 2 allocation errors and 0 consistency errors not associated with any single object.
CHECKDB found 2 allocation errors and 0 consistency errors in database 'MyProdDB'.
repair_allow_data_loss is the minimum repair level for the errors found by DBCC CHECKDB (MyProdDB).

I’ve discussed with the SQL Server team and this is a known bug in SQL Server 2014.

Read on for the fix and additional good advice.

Related Posts

Proposed Max Server Memory Defaults

Randolph West has a proposal for default max server memory on a SQL Server instance: As noted in the previous post in this series, memory in SQL Server is generally divided between query plans in the plan cache, and data in the buffer pool (other uses for memory in SQL Server are listed later in this post). The official documentation tells us:[T]he […]

Read More

Power BI Connection String Capitalization

Slava Murygin ran into a problem with capitalization on connection strings with Power BI Report Server: The message actually says:“Several errors occurred during data refresh. Please try again later or contact your administrator.”SessionID: 1b80301e-3898-417a-af9c-2e77ec490728[0] -1055784932: Credentials are required to connect to the SQL source. (Source at SQLServerName;DBA_Pro.). The exception was raised by the IDbCommand interface.[1] […]

Read More

Categories

September 2018
MTWTFSS
« Aug Oct »
 12
3456789
10111213141516
17181920212223
24252627282930