Graph

Handling Insufficient Disk Space in Ontotext GraphDB Desktop Edition

Overview When using the desktop edition of Ontotext GraphDB, https://www.ontotext.com/products/graphdb/ I encountered a situation where data imports and other operations could not be performed due to insufficient disk space: File not loaded; Insufficient disk space to start a transaction for repository ‘xxx’ due to: The repository ‘abc’ is critically low on free disk space with 4.6% (xxx GB) free left This article introduces one temporary workaround for this issue. ...

July 16, 2025 · Updated: July 16, 2025 · 1 min · Nakamura

Trying AllegroGraph

Overview I had the opportunity to try AllegroGraph, so this is a memo of my experience. https://allegrograph.com/ Usage There appear to be several setup methods, but I will try the following cloud version. https://allegrograph.cloud/ After setup, the following screen is displayed. After logging in, multiple repositories are displayed. Enabling Anonymous Access For example, the SPARQL endpoint for the “actors” repository is: https://ag1edt2www58hzzy.allegrograph.cloud/repositories/actors/sparql By default, Basic authentication is required. ...

July 16, 2025 · Updated: July 16, 2025 · 4 min · Nakamura