Out of Memory Errors

By default, the max Java heap size for the Mirth® Connect server is set to 256 MB. For large production instances you typically want to increase this value. You can do this from the Server Manager:

Or, you can edit the appropriate *.vmoptions file in your installation directory.

Out of memory errors can also happen on the client-side, usually when attempting to view very large messages through the message browser:

If this is the case, first you may want to consider using attachment handlers on your channel. To change the max heap size for the client-side Administrator, open the 8080 launch page in a browser:

Select the cog icon next to the Launch button, and change the max heap size. Then select the launch button. The JNLP file you download will have the "max-heap-size" attribute set to the value you chose.

The default value for the client-side max heap size is 512 MB. To change this default, edit the administrator.maxheapsize setting in the mirth.properties file. To change the options that show up in the drop-down on the 8080 launch page, change the administrator.maxheapsizeoptions setting.