Error: 948, Severity: 20,
The database ‘%.*ls’ cannot be opened because it is version %d. This server supports version %d and earlier. A downgrade path is not supported.

Error: 949, Severity: 16,
tempdb is skipped. You cannot run a query that requires tempdb

Error: 950, Severity: 20,
Database ‘%.*ls’ cannot be upgraded because its non-release version (%d) is not supported by this version of SQL Server. You cannot open a database that is incompatible with this version of sqlservr.exe. You must re-create the database.

Error: 951, Severity: 10,
Database ‘%.*ls’ running the upgrade step from version %d to version %d.

Error: 952, Severity: 16,
Database ‘%.*ls’ is in transition. Try the statement later.

Error: 954, Severity: 14,
The database “%.*ls” cannot be opened. It is acting as a mirror database.

Error: 955, Severity: 14,
Database %.*ls is enabled for Database Mirroring, but the database lacks quorum: the database cannot be opened. Check the partner and witness connections if configured.

Error: 956, Severity: 14,
Database %.*ls is enabled for Database Mirroring, but has not yet synchronized with its partner. Try the operation again later.

Error: 957, Severity: 17,
Database ‘%.*ls’ is enabled for database mirroring or has joined an availability group. The name of the database cannot be changed.

Error: 958, Severity: 10,
The resource database build version is %.*ls. This is an informational message only. No user action is required.

Error: 959, Severity: 20,
The resource database version is %d and this server supports version %d. Restore the correct version or reinstall SQL Server.

Error: 960, Severity: 10,
Warning: User “sys” (principal_id = %d) in database “%.*ls” has been renamed to “%.*ls”. “sys” is a reserved user or schema name in this version of SQL Server.

Error: 961, Severity: 10,
Warning: Index “%.*ls” (index_id = %d) on object ID %d in database “%.*ls” was renamed to “%.*ls” because its name is a duplicate of another index on the same object.

Error: 962, Severity: 10,
Warning: Primary key or Unique constraint “%.*ls” (object_id = %d) in database “%.*ls” was renamed to “%.*ls” because its index was renamed.

Error: 963, Severity: 10,
Warning: Database “%.*ls” was marked suspect because of actions taken during upgrade. See errorlog or eventlog for more information. Use ALTER DATABASE to bring the database online. The database will come online in restricted_user state.

Error: 964, Severity: 10,
Warning: System user ‘%.*ls’ was found missing from database ‘%.*ls’ and has been restored. This user is required for SQL Server operation.

Error: 965, Severity: 10,
Warning: A column nullability inconsistency was detected in the metadata of index “%.*ls” (index_id = %d) on object ID %d in database “%.*ls”. The index may be corrupt. Run DBCC CHECKTABLE to verify consistency.

Error: 966, Severity: 10,
Warning: Assembly “%.*ls” in database “%.*ls” has been renamed to “%.*ls” because the name of the assembly conflicts with a system assembly in this version of SQL Server.

Error: 967, Severity: 10,
Warning: The index “%.*ls” on “%.*ls”.”%.*ls” is disabled because the XML data bound to it may contain negative values for xs:date and xs:dateTime which are not longer supported.

Error: 968, Severity: 10,
Warning: The XML facet on type “%.*ls” in schema collection “%.*ls” is updated from “%.*ls” to “%.*ls” because Sql Server does not support negative years inside values of type xs:date or xs:dateTime.

This is applicable on below versions of SQL Server

SQL Server 2005
SQL Server 2008 R2
SQL Server 2012
SQL Server 2014

Hope this was helpful.

Thanks,
SQLServerF1 Team
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