Where is attachment file uploaded via JIRA

[Minju Kim]

I want to know location of attachment (the real file, not DB ID File in JIRA_HOME\Application Data\JIRA\data\attachments)

[Nic Brough -Adaptavist-]

That IS the "real file".  There's no other copies stored.

If you want to read an attachment directly off the file system you read the file under the attachments directory (I'd strongly recommend going through JIRA's API, and there's no way you should ever write here)

[formulardev01]

But, i can't read the file.. in attachments directory..

the file's name maybe DB ID .. where is my attachment file???

[Nic Brough -Adaptavist-]

Your file is the one in the attachment directory.  It's been renamed to fit with JIRA's internal naming scheme

This is why you should not be reading it this way - you're over-complicating what you're doing.  JIRA's storage is not intended for you to access directly.