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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"?

2 answers

1 accepted

0 votes
Answer accepted
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"?

As of April 2013, the officially recognized media type for SQL code is application/sql. See RFC6922 and IANA Media Types .

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