The "Cannot connect to datasource" error message is returned when opening the Manage Versions pane after adding a 64-character description to a branch version and when there are 1,300 branch versions in the Oracle geodatabase.

Additional Information

Workaround

The ArcGIS Server Data Management 2026 Update 1 Patch is now live on the support site. The URL is: https://support.esri.com/en-us/patches-updates/2026/arcgis-server-data-management-2026-update-1-patch

11.3 B version of the ArcGIS Server Data Management 2026 Update 1 Patch is live on the support site. The URL is available at https://support.esri.com/en-us/patches-updates/2026/arcgis-server-data-management-2026-update-1-patch.

Important Note – May 27, 2026: The 11.3 version of the ArcGIS Server Data Management 2026 Update 1 Patch has been updated to address BUG-000185094. Please install the new setup by downloading it from this page or using the ArcGIS Enterprise Patch Notification Tool. It is not necessary to uninstall the original patch. The new setup installs and replaces the original patch.

The ArcGIS Enterprise 11.3 version of the ArcGIS Server Data Management 2026 Update 1 Patch is live on the support site. This is a three-version patch. Refer to https://support.esri.com/en-us/patches-updates/2026/arcgis-server-data-management-2026-update-1-patch for more information regarding the announcement of the ArcGIS Server Data Management 2026 Update 1 Patch. This patch addresses several functional issues with the ArcGIS Enterprise 11.5, ArcGIS Enterprise 11.3, and ArcGIS Enterprise 11.1 releases related to data management. Apart from those explicitly listed, the patch targets correctness and performance optimizations for branch versioned data, with an emphasis on enhancing quality and performance. It is recommended for all customers using branch versioning and ArcGIS Server 11.5, ArcGIS Server 11.3, and ArcGIS Server 11.1. The ArcGIS Server Data Management 2026 Update 1 Patch is cumulative and includes all fixes from earlier ArcGIS Utility Network and Data Management patches.

Ensure version descriptions do not exceed 63 characters.

Steps to Reproduce