Start/notes.ini Parameters/FT_FLY_INDEX_OFF

FT_FLY_INDEX_OFF

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Parameter: FT_FLY_INDEX_OFF
Short description: Disables automatic on-the-fly creation of a full-text index when a FT search is run against a database that has no FT index.

Profile

Parameter
FT_FLY_INDEX_OFF
Category
Performance / Memory
Component
Server
Available since
9.0.1
Supported versions
9.0.1, 10.0, 11.0, 12.0, 14.0, 14.5, 14.5.1
GUI equivalent
notes.ini only (no GUI)
Possible values
0 = on-the-fly indexing allowed (default), 1 = disabled

Description

When a full-text search is run against a database that does not yet have a FT index, Domino builds a temporary index at runtime if needed ("FT search on the fly"). On large databases, this can cause massive I/O and CPU load and noticeably slow down production workloads. FT_FLY_INDEX_OFF=1 prevents this spontaneous indexing – the search either fails or runs (very slowly) as a linear search scan, without temporarily building an index.

Example configuration

FT_FLY_INDEX_OFF=1

Notes & pitfalls

  • Useful on production servers where FT indexes are intentionally maintained only via updall / load updall -f.
  • Applications that rely on on-the-fly FT searches may return empty results at the platform level – check beforehand.
  • Takes effect immediately, no restart required.
  • Recommended companion: Updall_NoFulltext=0 – so that updall regularly maintains the FTI.