> For the complete documentation index, see [llms.txt](https://docs.thousandeyes.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.thousandeyes.com/product-documentation/global-vantage-points/enterprise-agents/troubleshooting/what-to-do-if-te-agent-stops-running-due-to-a-vacuum-error.md). # What to Do If te-agent Stops Running Due to a VACUUM Error The ThousandEyes Enterprise Agent stores results of tests in a local database. When the agent checks in with the ThousandEyes collector, the contents of the database are uploaded to the collector, and the database is purged. In certain circumstances, the local copy of the database can become corrupted, due in large part to disk I/O errors associated with the filesystem storing the database. This phenomenon is documented at . When database corruption occurs the Agent will stop, and an error message will be seen in /var/log/te-agent.log, similar to the following: ``` 2013-02-06 18:30:06.232 INFO [te] - Agent version 0.12.1 starting. Setting max core size to ... 2013-02-06 18:30:06.236 FATAL [te] - Unable to set up agent tables: Error executing "VACUUM", err=11. Please contact support@thousandeyes.com for assistance. 2013-02-06 18:30:06.237 ERROR [te] - Error updating agent status: Error preparing query UPDATE agent_status SET time = datetime('now'), status = 'Unable to set up agent tables: Error executing "VACUUM", err=11. Please contact support@thousandeyes.com for assistance.': err=1 ``` As a result, the local database will be stopped and the Agent will be unable to operate. The Agent's status will be shown as "Offline" in the Agent Settings page, with a last contacted date of whenever the first VACUUM error occurred. ![](/files/-M5xtNP86f-n3uBM6aqX) In order to resolve this, follow the instructions below, per the type of Enterprise Agent (Linux package or Virtual Appliance). ## Linux Package **As root**, stop the te-agent process, then go to the /var/lib/te-agent/ directory and remove the te-agent.sqlite file, then restart the te-agent process: **Ubuntu 18.04 and 20.04, Red Hat Enterprise Linux 7 and 8, CentOS 7:** ``` systemctl stop te-agent cd /var/lib/te-agent rm te-agent.sqlite systemctl start te-agent ``` Alternative method when package "initscripts" (RHEL 7, CentOS 7) is installed: ``` service te-agent stop cd /var/lib/te-agent rm te-agent.sqlite service te-agent start ``` ## Virtual Appliance Log into the Virtual Appliance web console and click on the Advanced Settings tab. Click the **Clear Result Cache** button and confirm. ## Contacting ThousandEyes Support If steps described above do not resolve the issue or if the issue keeps reoccurring, please contact ThousandEyes Customer Engineering team using chat or email address. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.thousandeyes.com/product-documentation/global-vantage-points/enterprise-agents/troubleshooting/what-to-do-if-te-agent-stops-running-due-to-a-vacuum-error.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.