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Intermittent LoginFailure -1

Hoping you could assist with a LoginFailure -1 issue. our Tomcat service makes requests to Denodo: 1. Application information: Tomcat REST service utilizing Spring MVC framework and Spring Boot 2. Request format: A GET request is sent to Denodo REST service with query parameters to retrieve data from a Denodo View. Requests always ask for the response in JSON format. a. Example request url:$format=json&effective_date=2022-01-10&source_code=1. b. Username and password are sent via HTTP Basic Authentication. 3. Occasional error response received: “401 Unauthorized: [ <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" ""> <html xmlns=""> <head> <meta http-equiv="Content-Type" co... (1241 bytes)]” Next attempts are successful Any assistance would be appreciated. Thanks I should also add we just started seeing this issue since migrating to AWS.
18-01-2022 12:40:27 -0500

1 Answer

Hi, I am not able to reproduce your error. The 401 typically means unauthorized access but you have mentioned this looks to be an intermittent error. What I would suggest is to log the incoming web requests and analyze when this error occurs and then analyze the vdp.log and the catalina log file created on the day when the error occurred under <**Denodo_Home**>\resources\apache-tomcat\logs. To log incoming requests, you can follow the steps mentioned in the following Knowledge Base article[ Logging incoming web requests]( In case you need further assistance and if you have a valid Support Account then you can reach out to Denodo Support by raising a support case on [Denodo Support Site]( and the Support Team will assist you. Hope this helps!
Denodo Team
19-01-2022 07:57:19 -0500
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