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Note

You will only need to do this if you are using MySQL, as other databases already default to "READ-COMMITTED".

Run following queries in MySQL.

SET GLOBAL tx_isolation='READ-COMMITTED';
SET SESSION tx_isolation='READ-COMMITTED';

 

You will also need to set the following in your my.cnf/my.ini file.
[mysqld]
transaction-isolation = READ-COMMITTED


ID Generator Tool allows one to increase value stored in Environment Variable by one. It is very often used to generate/keep a running number (e.g. application reference number).

...

Figure 1: ID Generator Tool Properties

NameDescription
Form Target form. The form selected will be used for "Field ID" attribute below.
Field ID Optional field. You may specify a form field ID to be updated.
Record ID Optional field. You may specify a record ID explicitly, otherwise, the process instance ID will be assumed.
Environment Variable Name 

Name of the environment variable to be used to keep the running number.

Format

Determines the pattern of the generated value (e.g., "REF-?????" will yield "REF-00001")

Format 

Figure 1: ID Generator Tool Properties

NameDescription
Workflow Variable

The value generated can be saved into the corresponding workflow variable named here.

Info
titleUsing a non-existent Workflow Variable
 
name

You will get the following warning with the name printed out (e.g. status) in the server log if you attempt to map to a non-existent Workflow Variable.

Code Block
context attribute status does not exist in process context - adding new attributes to the process context is not allowed