Hi Satoshi,

Please take a look on this documentation.

https://success.outsystems.com/Documentation/11/Managing_the_Applications_Lifecycle/Monitor_and_Troubleshoot/Logging_database_and_architecture/The_log_tables_and_views

Outsystems has a set of error log tables that has a cycle.

Hope this helps.

Kind regards,

Chris

Hi @satoshi seki ,

It depends:

1. How old are the logs. 
   1. They are retained no more than 10 weeks but that will depend of environments configurations.
      1. For on-premises they are by default saved 4 weeks. And can be extended till 10.
      2. For OutSystems PaaS they are saved 9 weeks by default.
2. How are "you" running OutSystems. On-premises or in the PaaS.
   1. If you are in PaaS you can:
      1. Use something like MonitorProbe Forge tool: https://www.outsystems.com/forge/component-overview/4559/monitorprobe
      2. Or request access to DBMS OutSystems.
   2. If you are on-premises. You can:
      1. Also use MonitorProbe Forge tool: https://www.outsystems.com/forge/component-
      2. Ask your DBA or who manage the DBMS to provide you access.
3. The volume of data that you want to access.
4. If you access the logs to 3rd party tool.

For the last 2 points check how we propose our customer do it with a tool like Elastic - https://github.com/OutSystems/outsystems-elastic-integration

Hope this helps,

Urbano