%META:TOPICPARENT{name="TroubleshootingVirtuosoProblemCategories"}%
==Problems By Category==
===Permissions & Access Control Issues===

* [[SettingPerGraphPermissions|Setting per-graph read/write permissions]]
* [[SettingUpSeparatePartitionsQuadStores|Setting up separate partitions or quad stores for querying models]]
* [[Permissions problems associated with execution of SPARUL_CLEAR]]
* [[Permissions problems associated with EC2exts Ui]]
* [[SPARQL SELECT COUNT(*) queries are slow]]