User is using Schema Browser Data tab filter icon to filter table data containing "_" underscore character. He is using LIKE '%_%' and LIKE "%/_%" criteria, however, all rows are still displayed with filter.
Oracle configuration on treating and searching for underscores. Query with same criteria has the same results in SQLPlus.
Use REGEXP_LIKE function to search for underscores. Copy and paste the below criteria in the Filter code pane of Filter window. Modify the Column_Name to reflect correct table column:
regexp_like (Column_name,'[/_]')
