With
these exceptions, multiple libref joins are passed to DB2
z/OS.
-
If you specify the SERVER= option
for one libref, you must also specify it for the others, and its value
must be the same for all librefs.
-
If you specify the DIRECT_SQL=
option for one or multiple librefs, you must not set it to NO, NONE,
or NOGENSQL.
For completeness, the
portable code checks these options, regardless of the engine: