Why i need to press the push button twice to complete my action?

Question

in my Push Button at WHEN-BUTTON-PRESSED trigger I wrote this code:
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FORMS_DDL('CREATE TABLE DEMO (DEMO_ID NUMBER ENCRYPT USING ''AES256'' NO SALT NULL, DEMO_DATE DATE ENCRYPT USING ''AES256'' NO SALT NOT NULL)');
FORMS_DDL('CREATE UNIQUE INDEX DEMO_PK ON DEMO(DEMO_ID)');
FORMS_DDL('ALTER TABLE DEMO ADD (CONSTRAINT DEMO_PK PRIMARY KEY (DEMO_ID))');     
FORMS_DDL('alter system set wallet open identified by "zaq1xsw2"');
INSERT INTO demo VALUES (84,SYSDATE);
COMMIT;
FORMS_DDL('ALTER SYSTEM SET WALLET CLOSE');
Message('Thanks for buying our program.');
Message('Thanks for buying our program.');
Go_item('DEPT.DEPTNO');
Replace_content_view('WINDOW1','CANVAS4');
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but I need to press in it twice - two times - to execute the code above.
The Question is : why the code doesn't execute from first press ?

Answer 1

Here are some questions which should help us to help you if you provide detailed answers. Please also provide any other details which may help to illustrate the problem.
1. What is the complete Forms version you are using? Please provide the version number and not the marketing name. A version number looks like this: 10.1.2.3.0 or this 9.0.4.3.0
2. Are you running the form (the client) on the local machine or are you accessing it via something like Citrix, Desktop Sharing, etc?
3. Are you running Forms in a virtual machine (e.g. VMware, Virtual Box, etc)?
4. If you are using Forms 9.x or newer, what is the JRE or Oracle Jinitiator version you are using to run the form on the client?
5. If you are using Forms 9.x or newer, what is the browser and version you are using to run the form on the client?
6. Does any other function within the form cause the same odd behavior? If you have not tested, do so. For example, create a button with a WHEN-BUTTON-PRESSED trigger and code it to perform multiple tasks. Do you find that you have to click it more than once?