Cannot see the XML datatype column in Schema Browser | Data Tab. The whole column and header is missing or is not displayed. If I query the same table in SQL Editor, I am able to see the XML data type column.
Oracle Client software Oracle Data Access Components (ODAC) or Oracle Database On-line Analytical Processing (OLAP) is not fully supported in Toad for Oracle.
Use the standard Oracle Database 11g Release 1 Client OR Oracle Database 10g Client Release 2. See the Oracle downloads link below.
Alternatively, use the Oracle Instant Client 11g that is installed with an Oracle Client (ODAC) although this is also not fully supported in Toad for Oracle.