-817 THE SQL STATEMENT CANNOT BE EXECUTED BECAUSE THE STATEMENT WILL RESULT IN A PROHIBITED DATA CHANGE OPERATION.

Explanation
 The application attempted to execute an SQL statement
that would result in updates to user data or to the subsystem catalog.
This is prohibited for one of the following reasons:  
The application is running as an IMS™ inquiry-only
transaction.
The application is an IMS, CICS®, or RRSAF application that
is attempting to update data at a remote DBMS that does not support
two-phase commit.
The application is attempting to update data at multiple locations
and one of the locations does not support two-phase commit.
A trigger defined with activation time BEFORE was activated and
its triggered action caused updates to the database.
A CREATE TABLE statement for an accelerator-only table was followed
by a data change operation for an accelerator-only table.

These SQL statements include INSERT, UPDATE, MERGE, DELETE,
CREATE, ALTER, DROP, GRANT, and REVOKE.

System action
 The statement cannot be processed.

Programmer response
 If the application is running as an IMS inquiry-only transaction, see
your IMS system programmer about
changing the inquiry-only status of the transaction under which your
application is running.
If the IMS, CICS, or RRSAF application is attempting
a remote update, either the application must be changed to run as
a local application on the server DBMS, or the server DBMS must be
upgraded to support two-phase commit.
If the application is
attempting to update data at multiple locations, either the application
must be changed, or all DBMSs involved must be upgraded to support
two-phase commit.
If
the connection to the remote system is through VTAM®, ensure that the VTAM APPL statement specifies SYNCLVL=SYNCPT. 
If
the error is due to an invalid statement during a trigger activation,
contact your system administrator to correct the trigger definition.

SQLSTATE
 25000