SYSFILE file_name column after a RESTORE [CR 403817]

Add the following paragraph to the section “Restore accommodates dbspace changes” in the section “Restoring your databases” in Chapter 14, “Backup and Data Recovery”:

Note that the file_name column in the SYSFILE system table for the SYSTEM dbspace is not updated during a restore. For the SYSTEM dbspace, the file_name column always reflects the name when the database was created. The filename of the SYSTEM dbspace is the name of the database file.