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Server and Client Forms having same Voucher Numbers [message #637574]

Wed, 20 May 2015 06:22

manisngpl
Messages: 42
Registered: December 2014
Location: Faisalabad, Pakistan

Member

Dear Members,

I'am generating voucher numbers using the WHEN-VALIDATE-ITEM Trigger with following Query:

Select nvl(max(field_name,0)+1) into :form_field from Table;

On server it works fine, but whenever both the server and client running the same form and entering data then same voucher numbers are generating on both the machines resulting unable to commit record.

Please help me in the matter.

Regards,

Muhammad Usman

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Re: Server and Client Forms having same Voucher Numbers [message #637576 is a reply to message #637574]

Wed, 20 May 2015 06:24

Littlefoot
Messages: 21808
Registered: June 2005
Location: Croatia, Europe

Senior Member
Account Moderator

That's expected in a multi-user environment. Switch to a sequence.

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Re: Server and Client Forms having same Voucher Numbers [message #637577 is a reply to message #637576]

Wed, 20 May 2015 06:28

manisngpl
Messages: 42
Registered: December 2014
Location: Faisalabad, Pakistan

Member

Dear littlefoot would you please brief in detail

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Re: Server and Client Forms having same Voucher Numbers [message #637579 is a reply to message #637577]

Wed, 20 May 2015 06:39

Littlefoot
Messages: 21808
Registered: June 2005
Location: Croatia, Europe

Senior Member
Account Moderator

In SQL*Plus:

create sequence my_seq;

In a form:

select my_seq.nextval into :form_field from dual;

[EDIT] Modified form code as

:form_field := my_seq.nextval;

won't work in Forms

[Updated on: Wed, 20 May 2015 06:52]

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