Problem with SQL attachments

We have recently noticed a problem with SQL attachments.

Some attachments with extension .sql cannot be accessed. After click on attachment browser (Mozilla 19, Mozilla 25, Chrome, IE 11, Safari 5.1.7, Opera 11.60) open empty window. Right click/Save as results in empty file (size 0 byte).

Attachments are stored correctly in file system.

We have come to conclusion that problem is in mime type.

In database (mysql) .sql attachments are saved as following mime types:

mysql> select distinct(mimetype), count(*) from fileattachment where id>='45230' and filename like'%sql' group by 1;


| mimetype | count(*) |


| application/octet-stream | 325 |

| application/x-sql | 20 |

| text/plain | 14 |

| text/x-sql | 4 |

| text\plain/octet-stream | 225 |


5 rows in set (0.03 sec)

Attachments that are inaccessible have type "text\plain/octet-stream".

I have tried solution found in

I have added following in /opt/atlassian/jira/conf/web.xml (and restarted jira)













And have manually changed mimetype for existing attachments and they are ok.

New attachments are created with wrong mimetype.

How can I force that new sql attachments are created as mime "text/plain" and not "text\plain/octet-stream"?

1 answer

1 accepted

0 votes
Accepted answer
Pedro Cora Atlassian Team Nov 26, 2013

Check this knowledge base article that contains a fix for this problem:

Thank You,

this have solved our problem.

On affected computer registry was changed

HKEY_CLASSES_ROOT\.sql\Content Type from "text\plain" to "text/plain"

Can I force jira that any *.sql attachment have mime type set to "text/plain"?

Suggest an answer

Log in or Sign up to answer
Community showcase
Published Jan 08, 2019 in Jira

How to Jira for designers

I’m a designer on the Jira team. For a long time, I’ve fielded questions from other designers about how they should be using Jira Software with their design team. I’ve also heard feedback from other ...

1,088 views 4 9
Read article

Atlassian User Groups

Connect with like-minded Atlassian users at free events near you!

Find a group

Connect with like-minded Atlassian users at free events near you!

Find my local user group

Unfortunately there are no AUG chapters near you at the moment.

Start an AUG

You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs

Groups near you