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Troubleshooting FAQ

Section 1 - Configuration

1.1 Configuration File Locations

Upon initial launch, SlamData will not have a configuration file. However, once a valid database mount has been configured, a file will be created and used to store mount points. Unless specified on the command line, SlamData will look for its configuration file in the following locations by default:

Operating System File Location
Apple macOS /Applications/SlamData Advanced <ver>.app/Contents/java/app/empty-config.json
Microsoft Windows C:\Program Files (x86)\slamdata-advanced <ver>\empty-config.json
Linux $HOME/slamdata-advanced-<ver>/empty-config.json


Modifying the configuration file

If the configuration file needs to be modified by hand, a backup copy should be created first. Furthermore, if the file is modified while SlamData is running, any changes may be overwritten.

1.1.1 The Metastore

Within the configuration file is a section to specify the location and type of Metastore to use for SlamData.

SlamData relies upon a PostgreSQL or Java H2 database to store metadata. The metastore saves information such as mount points, views and everything related to security.

See the Administration Guide for more information.

1.2 Log File Locations

SlamData has a single log file whose location depends upon the Operating System. Replace version in the table below with the actual version number that you are running.

Operating System File Location
Mac OS /Applications/SlamData <version>.app/Contents/java/app/slamdata-<version>.log
Microsoft Windows C:Program Files (x86)slamdata <version>slamdata-<version>.log
Linux (various vendors) $HOME/slamdata<version>/slamdata-<version>.log

Section 2 - Running SlamData

2.1 SlamData Won’t Start

2.1.1 License Problems

This section is primarily for users experiencing errors when activating a license. If no errors occur during SlamData start up, and none appear in the UI then you may skip this section.

SlamData requires a valid license key to start. Users receive a license key when requesting a trial of SlamData at or when purchasing SlamData.

When signing up for the trial, a user account is also created. This user account and password should be remembered as it is needed to log into SlamData later. (See section 2.1.2 Authentication below) Make sure to note whether the registered email address contains capitalization anywhere.

An email containing the license key will be sent and the license will be displayed in-browser after registration is complete. This license will be entered during installation through the installer or can be entered manually into the VMOptions file after manual installation is complete. The location of this file varies based on OS:

Operating System File Location
macOS /Applications/SlamData <version>.app/Contents/vmoptions.txt
Microsoft Windows C:\Programs Files (x86)\slamdata <version>\SlamData.vmoptions
Linux (various vendors) $HOME/slamdata<version>/SlamData.vmoptions

This file may be located elsewhere if SlamData was installed manually.

The license key is in the form ABCDE-FGHIJ-KLMNO-PQRST-UVWXY.

All license parameters inside of the vmoptions file must be defined even if they do not contain a value, in which case simply use quotation marks. The only field that must contain a value is the license key as shown below:


If any parameter shown above is not defined then the activation of a license will fail.


SlamData must be able to validate the license key against a server located on the public Internet. The http server built into the SlamData product does not allow configuration of a proxy web server. If your network utilizes a proxy server for web traffic, this may require a network administrator to allow the SlamData server to communicate directly with the license server, sometimes referred to as “punching a hole” in the firewall.

License Server Information:

IP Address:
Port      :  443

The SlamData server date and time should also be synchronized with an NTP server. If the date and time are skewed by too much the license check may fail.

You may also check the following URLs to gather more information which may assist in troubleshooting the problem:



2.1.2 Authentication Problems


SlamData requires that users authenticate before using it. This means that the user is proving they are who they say they are. This happens by providing an email address and a password. This action does not determine what the user can do, only if the user is valid.

SlamData utilizes an OAuth2 server located on the Internet to do this. Users will need to authenticate with the exact email address and password used when registering for the trial. Case sensitivity is important with the email address and password. If the registered email address and password contained specific case, it will need to be used here too.

Clicking the “Sign in” icon in the upper right should result in the option to log into If it is not listed as an option this typically means SlamData is unable to contact the authentication server.

Connectivity between the SlamData server and the public authentication server should be verified. Again if a proxy server is used on the network then a network administrator will need to open a route to the authentication server:

IP Address:
Port      :  443

Once connectivity has been verified SlamData may need to be restarted.

2.1.3 Authorization Problems

Once a user has authenticated against the authentication server then the internal SlamData authorization model controls what the user has access to. Note that a user may successfully log into SlamData but not have any authorization permissions to perform actions.

The email address provided by the user during installation is automatically configured as part of the Admin group in the local SlamData installation. Members in the Admin group are allowed to perform all actions. If the user email address does not exactly match what was entered during both during registration AND installation then the user may not be able to perform any actions.

Check to make sure that the same email address, including proper case, was used:

  1. During registration
  2. In the UI during installation
  3. When logging in

2.1.4 Less Common Errors

  1. If an older version of SlamData (3.x and older) is installed in a Virtual Machine (VM), it may require more than one CPU core before it will launch. If you are experiencing problems running an older version of SlamData in a VM, try increasing the number of cores and restarting.
  2. In older versions of SlamData (3.x and older), an invalid database mount may prevent SlamData from starting. An invalid database mount could be a database that was previously available but is no longer available, credentials may have changed, port number changed, or any other configuration change that does not allow previously validated configurations to successfully connect.

2.2 Accessing SlamData

The default SlamData URL is http://<servername>:20223

Example: http://localhost:20223

2.3 How do I see which version I’m running?

SlamData’s version will be displayed in the browser title bar or tab title.

The version of the SlamData analytics compiler can be obtained by browsing to http://<servername>:20223/server/info

Example: http://localhost:20223/server/info

2.4 Running SlamData in the Cloud

When running SlamData with a hosting provider, such as Amazon EC2, the most common error encountered is a security policy misconfiguration. SlamData will need to connect to a data source over the same port as a standard database client.

A data source or database server and the SlamData server do not need to run on the same system.

Use the following checklist to ensure network problems are minimized.

  1. Verify the security policy for the data source or database server is:
  • Accepting incoming connections from the SlamData server IP address.
  • Accepting incoming connections on the correct port.
  1. If you are still unable to connect to your hosted data source or database system:
  • Verify that you can connect with a standard database client from any system.
  • Connect with a standard database client from the same system SlamData is running on.