0x00760009 (7733257) The program could not disconnect from the DB2 subsystem, subsystem-name. The return and reason code (return-code, reason code') values were returned.

Explanation
An error was reported when the disconnect request was issued
to stop a connection with the DB2 subsystem, subsystem-name.
The DB2 return and reason code information is displayed in the message. 

User response
Refer to the appropriate IBM DB2 for z/OS manual for a
description of the error condition. Generally, no immediate action is required.
The most common reason for this kind of error is a DB2 time-out. The metadata
utility does not update any DB2 resources during its operation.