Scheduling failed

In the Central Configeration manager check whether Job Server is running?

yes, all the servers are up and running.

Infact, there is no problem with scheduling other reports. It is just this particular I am having problem while scheduling it and ends up with error: Failed to retrieve data from the database. Details: [Database Vendor Code: 18456 ]
 
 

When you run the report in Infoview does it prompt you for a DB username and password?  Or have you managed the report and saved the information there?  

It's located under the process tab and then under database.  Also what option do you have under "When Viewing Report:" at the bottom of the page.  When we want the report to be scheduled, we save the password, and change the bottom option to 'Use same database logon as when report is run"  

No it does not prompt DB username password as I have set up all the credentials under a process tab in database option. This is really weird issue. If it runs while previewing, why it is failing while scheduling?

Does anyone know what should i be checking to tackle this error relating with scheduling error:
Error in File C:\Program Files\Business Objects\BusinessObjects Enterprise 11.5\Data\procSched\IGSAPP03.reportjobserver\~tmp1518566028e42a2c.rpt: Failed to retrieve data from the database. Details: [Database Vendor Code: 18456 ]

Thanks

Hi again,
Could anybody help me with this issue?

No objections.