As mentioned in the offical DB2 [documentation](https://www.ibm.com/support/knowledgecenter/en/SSFMBX/com.ibm.swg.im.dashdb.sql.ref.doc/doc/r0003272.html), these types of (GLOBAL TEMPORARY TABLE) tables are defined for the current session and cannot be shared with other sessions. i.e,
> DECLARE GLOBAL TEMPORARY TABLE statement defines a temporary table for the current session.
> The declared temporary table description does not appear in the system catalog. It is not persistent and cannot be shared with other sessions. Each session that defines a declared global temporary table of the same name has its own unique description of the temporary table. When the session terminates, the rows of the table are deleted, and the description of the temporary table is dropped.
Hence, you will be able to introspect normal tables and create views as required apart from 'GLOBAL TEMPORARY TABLE' type of tables.
Hope this helps!