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What does the message 'Performing consistency check' mean?

Technote (FAQ)


When a Lotus® Domino® server is started, the following message can appear:

Performing consistency check on database <database>.nsf

What does this message indicate?


This message is an indication that Domino is performing a consistency check on a Lotus Notes® database. A consistency check is synonymous with the Fixup server task. Consistency checks are done when a database is found to be in an unknown state, corrupt state, or the integrity is questionable.

  • An unknown state occurs when the database is not closed properly (for example, a server crash or a database file being copied at the operating system level while open, etc.).
  • A corrupt state can occur in several places. These all relate to bad tables, notes, folders, bitmaps, etc.
  • Questionable integrity occurs when a database header or index has entries that appear to be invalid.

There is no way to prevent a consistency check from occurring. When Domino performs a consistency check, it is a good thing, because Domino is proactively maintaining the stability of a Notes database.

Supporting Information:

The NSF file format and detailed information regarding ODS attributes and changes Notes makes between releases are proprietary and will not be generally documented.

NOTE $FIXUP does not delete a document and leave behind a deletion stub, it completely removes it.

Related information

What is a Consistency Check and can the progress of a C
A simplified Chinese translation is available

Cross reference information
Segment Product Component Platform Version Edition
Messaging Applications Lotus End of Support Products Lotus Notes Mac OS, Windows 7.0, 6.5, 6.0

Historical Number


Document information

More support for: Lotus End of Support Products
Lotus Domino

Software version: 5.0, 6.0, 6.5, 7.0

Operating system(s): AIX, IBM i, Platform Independent, Solaris, Windows, z/OS

Reference #: 1086176

Modified date: 27 June 2006

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