Troubleshooting - 10%

Question 1

What are the requirements of third party cookies in a browser?

Answer 1

Tableau Server stores a session cookie in a user’s local browser after they sign in. That’s how it knows the user has been authenticated. If the browser blocks first-party cookies, they can’t sign in to Server.

When a user signs into TS via:
- an embedded view
- trusted authentication environment
then this cookie is stored as a third-party cookie, because the cookie’s domain is different from the one in the browser’s address bar. Must allow third-party cookies.

Question 2

What are the steps to reset passwords for a Tableau user or Tableau Run-As user?

Answer 2

Tableau user password can only be reset when using local authentication. Can edit in the GUI. OR tabadmin passwd

Run-As User: do it in the Server Config dialog

Question 3

What are the steps to packaging log files for reporting?

Answer 3

tabadmin ziplogs

Generate snapshot from Status

Question 4

What does Tabadmin “Validate” command do, and how do you use it?

Answer 4

It confirms that minimum hardware requirements are met for the 32-bit version of TS. adding -x validates 64-bit reqs. The -x version can help you confirm whether your current cores, disk space, and RAM are sufficient for an upgrade to 64.

Question 5

How do you rebuild the search index?

Answer 5

Best way: stop the Server, then tabadmin reindex

You can also click a button on the Server Status tab. This may result in sites, projects, and content temporarily disappearing from Server.

Question 6

How do you create or open a support request?

Answer 6

1. support@tableau.com

2. tableau.com/support/request

Question 7

How can we use data engine vectorization to troubleshoot performance?

Answer 7

Data Engine vectorization is a new feature in 9.0 that speeds up the performance of extract-based workbooks by optimizing CPU utilization. (They rewrote the code)

Question 8

How can we use external query caching to troubleshoot performance?

Answer 8

Stored in the Cache Server. Any query that is issued from Server, the results as stored here, and gets materialized to disk. Another user issuing a same/similar query can get results from this cache, which is faster than issuing a new query to the database.

Question 9

How do shadow extracts impact performance?

Answer 9

faster data source access for large text files and Excel files

Question 10

How can we use parallel aggregation to troubleshoot performance?

Answer 10

Uses multiple cores in Tableau Extracts and other file-based data sources