https://community.esri.com/t5/arcgis-pro-questions/performance-index/m-p/1675397#M100982 <P>Yes, and this usually isn’t about index syntax, it’s about what you’re indexing and where.</P><P>A few things that commonly cause Block Group index failures:</P><P>Too many fields / wide tables (especially stats-heavy joins) → the database engine chokes.</P><P>Indexes on calculated or text-heavy fields that aren’t selective.</P><P>File GDB limits — large Block Group tables + multiple indexes can hit internal limits and crash Pro.</P><P>What works reliably</P><P>Index only the join key (e.g., GEOID) and one or two highly selective numeric fields — not everything.</P><P>Create indexes before joining large stats tables, not after.</P><P>If this is a File GDB and the table is large, try:</P><P>Exporting to a new FGDB, then indexing</P><P>Or moving to Enterprise GDB if this is production-scale</P><P>Indexing everything hurts more than it helps. Keep indexes minimal, selective, and created early, and the crashes usually disappear.</P> Tue, 30 Dec 2025 22:57:40 GMT VenkataKondepati 2025-12-30T22:57:40Z https://community.esri.com/t5/arcgis-pro-questions/performance-index/m-p/1675396#M100981 <P>I'm hitting a persistent error when trying to index my Block Group statistical data. The goal is to improve performance, but th<FONT color="#000000">e index creation fails repeatedly. Is there a specific way to configure the index to</FONT> prevent these crashes?</P> Tue, 30 Dec 2025 22:55:31 GMT https://community.esri.com/t5/arcgis-pro-questions/performance-index/m-p/1675396#M100981 HaileyTimmons 2025-12-30T22:55:31Z https://community.esri.com/t5/arcgis-pro-questions/performance-index/m-p/1675397#M100982 <P>Yes, and this usually isn’t about index syntax, it’s about what you’re indexing and where.</P><P>A few things that commonly cause Block Group index failures:</P><P>Too many fields / wide tables (especially stats-heavy joins) → the database engine chokes.</P><P>Indexes on calculated or text-heavy fields that aren’t selective.</P><P>File GDB limits — large Block Group tables + multiple indexes can hit internal limits and crash Pro.</P><P>What works reliably</P><P>Index only the join key (e.g., GEOID) and one or two highly selective numeric fields — not everything.</P><P>Create indexes before joining large stats tables, not after.</P><P>If this is a File GDB and the table is large, try:</P><P>Exporting to a new FGDB, then indexing</P><P>Or moving to Enterprise GDB if this is production-scale</P><P>Indexing everything hurts more than it helps. Keep indexes minimal, selective, and created early, and the crashes usually disappear.</P> Tue, 30 Dec 2025 22:57:40 GMT https://community.esri.com/t5/arcgis-pro-questions/performance-index/m-p/1675397#M100982 VenkataKondepati 2025-12-30T22:57:40Z