Dbcc file location

One possible cause is that a stored file ID is not valid. Since the forwarded record in a row references another page, when that page is accessed and the file ID is invalid, a error could be encountered. This condition would be a database corruption error on the page with the forwarded record. This field is used to link a series of pages such as in a clustered index. If the file ID is invalid for the prev or next page, when the engine must reference this to traverse to the next or previous page, a error can be encountered.

If you find errors, you should restore from a known good Backup. In most cases, a repair of this type of error will result in a data loss. Be prepared to provide the query that is encountering the error.

The more you tell us the more we can help. Can you help us improve? Resolved my issue. Clear instructions. Easy to follow. No jargon. Pictures helped. Didn't match my screen. Incorrect instructions. Too technical. Not enough information. The Database Engine dynamically chooses the virtual file log size when log files are created or extended. A shrink operation is most effective after an operation that creates a large amount of unused space, such as a truncate table or a drop table operation.

Most databases require some available free space for regular day-to-day operations. If you shrink a database repeatedly and its size grows again, then it's likely that regular operations require the shrunk space.

In these cases, repeatedly shrinking the database is a wasted operation. A shrink operation doesn't preserve the fragmentation state of indexes in the database, and generally increases fragmentation to a degree. This fragmentation is another reason not to repeatedly shrink the database. Shrink multiple files in the same database sequentially instead of concurrently. Contention on system tables can cause blocking and lead to delays.

If the file size doesn't change after an error-less shrink operation, try the following to verify that the file has adequate free space:. The shrink operation can't reduce the file size any further if there's insufficient free space available. Typically it's the log file that appears not to shrink. This non-shrinking is usually the result of a log file that hasn't been truncated. A transaction running under a row versioning-based isolation level can block shrink operations.

This message is logged every five minutes in the first hour and then every hour. For example, if the error log contains the following error message then the following error will occur:.