On Solaris 2.8

DB21085I Instance "db2wps50" uses "32" bits and DB2 code release "SQL08013"
with level identifier "02040106".
Informational tokens are "DB2 v8.1.0.24", "s030728", "U488482", and FixPak "3".
Product is installed at "/opt/IBM/db2/V8.1".

The instance(s) were created under /export/home. We would like to
them to a separate filesystem. Is it as simple as shutting the instance
down and using mv? The databases for the instance are already on
a dedicated filesystem so it's just the binaries etc.