Connect to a PA source database first.
Explanation
A PA query is being run before a suitable PA connection
has been established. This can occur when you attempt to use the Performance
History menu option from within another perspective, for example SM.
It is not known which database connection is intended and therefore
an automatic connection is not attempted.
System action
None.
User response
Switch to the PA perspective and connect to the desired
database before attempting the operation again.