Seaquel
SQL Server error code

SQL Server error 2579

SQL Server raises error 2579 at severity 16, which marks a problem with the query or data that you can correct.

Table error: Extent %S_PGID in object ID %d, index ID %d, partition ID %I64d, alloc unit ID %I64d (type %.*ls) is beyond the range of this database.
Msg2579
NameDBCC_EXTENT_OUT_OF_RANGE
Severity16
Group2000–2999

What it means

P_ID is a PageID of the form (filenum:pageinfile). The pageinfile of this extent is greater than the physical size of the file (filenum) of the database. The extent is marked as being allocated in an IAM page for the indicated allocation unit ID.

Source: Database Engine events and errors