-910 THE SQL STATEMENT CANNOT ACCESS AN OBJECT ON WHICH UNCOMMITTED CHANGES ARE PENDING

Explanation
  The application program attempted
to access an object that has been modified and the changes have not
yet been committed. This error is issued in the following situations: When an application program issues a data definitional statement
(DROP, ALTER, CREATE, or RENAME) against an object, and then attempts
to access that object before the operation is complete. 
 When the application program issues an ALTER or CREATE statement,
and a data manipulative statement (such as INSERT, UPDATE, DELETE,
MERGE, or SELECT) is processed for the same object, in the same commit
scope. 

System action
  The statement cannot be processed.

Programmer response
  Modify the logic of the
application program, other than the logic for DROP, so that a COMMIT
(or the IMS™ or CICS® equivalent) is executed between the data
definitional statement and the failing SQL statement, or between the
data manipulative statement and the data definitional statement. In
cases where open held cursors are associated with the failing SQL
statement, the cursor must be closed prior to COMMIT.
   For
DROP, the logic of the application program should be modified so that
no attempt is made to access an object after the DROP has been executed. Attention: DROP
includes cases when rollback to a savepoint includes rolling back
to a CREATE.

SQLSTATE
  57007