When "File Descendant" i.e. v_metadata_descendant is opened from a related lists, it loads/builds the entire sys_metadata tree from the call "AbstractMetadataTreeTableData.loadFileDataIfQueryHasOnlyOneNonTreeCondition"DescriptionWhen a user loads one of the Related List (Descendants) which is available part of certain form in a new window (Right Clicking on the related list >>> Open in new window), it builds the sys_metadata tree (loading all the sys_metadata records) causing high memory consumption for the transactionSteps to Reproduce Navigate to any base instance.Load the sys_metadata list. It should approximately yield 450k+ records.Navigate to sysevent_email_action.LIST and open a record (For example, Email assigned to group (sc_task)).Check if any related lists already exist for the form. If yes, go to next step. If not, configure the "Descendants" related list to the form.After the related list loads, right click on the related list filter and click on Open new window.Follow the thread stack trace or capture a heap dump.WorkaroundThis problem has been fixed. If you are able to upgrade, review the Fixed In or Intended Fix Version fields to determine whether any versions have a planned or permanent fix. Delete the following records below and restart the node: sys_relationship_b5596613bf1021000ba9dc2ecf0739c5sys_ui_list_control_a6335b10bf3021000ba9dc2ecf07399csys_ui_list_sys_db_object_b5596613bf1021000ba9dc2ecf0739c5_nullsys_ui_list_sys_metadata_b5596613bf1021000ba9dc2ecf0739c5_nullRelated Problem: PRB1317351