Stash is now known as Bitbucket Server.
See the

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of this page, or visit the Bitbucket Server documentation home page.

This page lists the supported platforms for Stash 3.4.x.

See Integrating Stash with Atlassian applications for information about supported versions of JIRA.


Key: (tick) = Supported  (warning) = Deprecated  (error) = Not Supported



Oracle Java

(tick) 1.8
(warning) 1.7
(error) 1.6

  • We recommend using Oracle JRE 8, which you can download from the Oracle website.
  • For Java 8 we recommend 1.8.0u40+ to avoid critical defects in older versions.
  • Stash only requires the Java JRE, not the JDK.
  • For OpenJDK, download and install instructions for Linux flavors are at
  • Note that the Stash installer will install a supported version of the Oracle Java JRE, which is only available to Stash, if necessary. See Running the Stash installer.
  • (error) OpenJDK >= 1.8u25 and < 1.8u40 are not supported due to a severe defect, Bug 1167153. This was fixed in 1.8u40.
  • (error) Support for Java 6 was removed in Stash 3.0, as previously announced.
  • (warning) Support for Java 7 is deprecated, and will be removed in Stash 4.0. See End of support announcements for Stash.

Pre-installed Java on some AWS EC2 Linux instances might be installed with a subset of features. See  SSH server fails to start on AWS EC2 instance for more information.


(tick) 1.8u0 - 1.8u20

(tick) 1.8u40+

(error) 1.8u25+
(warning) 1.7 
(error) 1.6

Operating systems


Apple Mac OS X(tick) (Evaluation only, not supported for production deployment)
  • Stash is a pure Java application and should run on any platform, provided all the Java requirements are satisfied.
  • In production environments Stash should be run from a dedicated user account.
  • Although Stash can be run in virtualised environments, Atlassian is not yet able to provide technical support for performance-related problems in a virtualised environment. If you do chose to run Stash in a virtual machine, please ensure that you choose a VM with good IO throughput and sufficient free memory. See hardware requirements below.

Microsoft Windows

(tick) (Not supported for 500+ Enterprise tiers)

HSQLDB(tick) (bundled; for evaluation only)
Microsoft SQL Server / Microsoft SQL Server Express

(tick) 2014
(tick) 2012
(tick) 2008 R2
(tick) 2008

(tick) 2005


(tick) 5.6.16+
(tick) 5.5.x
(tick) 5.1.x

(error) 5.7+
(error) 5.6.0 – 5.6.15


MySQL, while supported by Stash, is currently not recommended especially in larger instances, due to inherent performance and deadlock issues that occur in this database engine under heavy load.

Affected systems may experience slow response times, deadlock errors and in extreme cases errors due to running out of database connections. These issues are intrinsic to MySQL (no other database engine supported by Stash shares this behavior) and are due to the way MySQL performs row-level locking in transactions. See for some general information on this.

Stash does its best to work around the MySQL behavior - see issues STASH-4517, STASH-4701 and others for example. However, under very heavy load you will generally get better performance with any of the other database engines supported by Stash (such as PostgreSQL which is also freely available) than you will with MySQL.

  • (error) MySQL 5.6.15 and earlier: Note that Stash does not support versions of MySQL 5.6 earlier than 5.6.16 at all, because of bugs in its query optimizer (#68424, #69005). See Connecting Stash to MySQL for more information.

  • (error) MySQL 5.7+ is not supported.


(tick) 12c
(tick) 11g



(tick) 9.0, 9.1, 9.2, 9.3
(tick) 8.2, 8.3, 8.4


Web browsers


Chrome(tick) Latest stable version supported


Firefox(tick) Latest stable version supported  

Internet Explorer

(tick) 11
(tick) 10
(tick) 9
(error) 8


(tick) Latest stable version supported

DVCS clients  
Git - server side

(tick) 2.1.0+
(tick) 2.0.0 – 2.0.1, 2.0.4+ 
(tick) 1.9.0+
(tick) 1.8.0 –,
(tick) 1.7.6+

(error) 2.0.2, 2.0.3
(error) 1.7.1
(error) Cygwin

  • The version of Git installed on machines that interact with Stash must be compatible with the version of Git installed for use by the Stash server.
  • (error) Git 1.7.1 is not supported.
  • (warning) Git 1.8.3.x has some performance regressions which may cause problems in Stash with large repositories
  • (error) is not supported due to a critical bug in how symbolic refs are handled which breaks pushing and pulling for repositories with pull requests. (Details)
    STASH-4101 - Getting issue details... STATUS
  • (error) 2.0.2 and 2.0.3 are not supported due to a critical bug in git diff-tree which breaks Stash's commit page. (Details)
    STASH-5052 - Getting issue details... STATUS
  • (error) Cygwin: Cygwin Git is not supported for use on Windows servers, regardless of version.
  • (warning) XenServer can cause msysgit to crash when XenServer Tools is installed. (Details)
Git - client side(tick) 1.6.6+
Additional tools  
Perl(tick) 5.8.8+ 
Mail clients  
Apple Mail(tick) Apple Mail 4 
Gmail(tick) Latest 
iOS Devices(tick) iPhone, iPad 
Microsoft Outlook(tick) Express, 2007, 2010 / Hotmail / Windows Live Mail
(tick) Latest 

Hardware requirements

Stash needs a minimum of 720 MB of free memory to start up. Additional memory is required to support Git operations, depending on the number and frequency of Git operations and the number of users. See Scaling Stash for further discussion of hardware requirements.


Deploying multiple Atlassian applications in a single Tomcat container is not supported. We do not test this configuration and upgrading any of the applications (even for point releases) is likely to break it.

Finally, we recommend not deploying any other applications to the same Tomcat container that runs Stash, especially if these other applications have large memory requirements or require additional libraries in Tomcat's lib subdirectory.

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