KNOWLEDGE BASE

Error "NO_POOLED_AGENTS_ASSIGNED" Refreshing Pooled Bridge Data Sources


Published: 07 Jan 2022
Last Modified Date: 13 Jan 2022

Issue

When attempting to refresh a relational database data source using a new bridge pool, the following error occurs: 
 
'NO_POOLED_AGENTS_ASSIGNED'

Environment

  • Tableau Bridge
  • Tableau Online
  • Relational Database

Resolution

Use one of the below options to address the issue.

Option 1: Enter the Server Address Used by Each Affected Data Source Connection

  1. In Tableau Online, navigate to an affected data source. 
  2. Select the Connections tab.
  3. Under the Connects to column, highlight and copy the server address specified there. 
  4. Go to the Settings page and select the Bridge tab.
  5. Under Private Network Allowlist, select Add New Domain, and paste the server address from step 3. 
  6. Select the appropriate pool then select Save.

Option 2: Assign Bridge Client(s) to the Default Pool

  1. In Tableau Online, go to the Settings page and select the Bridge tab. 
  2. Under Pooling, expand the named pool(s) to display their assigned Bridge clients. 
  3. Select the Edit (pencil icon) next to each Bridge client and from the Pool drop down, select Default and Save.  
  4. Delete any domains contained in the Private Network Allowlist.
Important: When using the default pool as a workaround, unless you have additional Bridge clients assigned to designated pools, you must delete all domains listed in the Private Network Allowlist domain registry for all Bridge refresh jobs to use the default pool.

Cause

The allowlist registry requires the server address or alias that is specified in each data source connection used to connect to the database.
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