Skip to content
DataMiner DoJo

More results...

Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors
Search in posts
Search in pages
Search in posts
Search in pages
Log in
Menu
  • Blog
  • Questions
  • Learning
    • E-learning Courses
    • Open Classroom Training
    • Certification
      • DataMiner Fundamentals
      • DataMiner Configurator
      • DataMiner Automation
      • Scripts & Connectors Developer: HTTP Basics
      • Scripts & Connectors Developer: SNMP Basics
      • Visual Overview – Level 1
      • Verify a certificate
    • Tutorials
    • Video Library
    • Books We Like
    • >> Go to DataMiner Docs
  • Expert Center
    • Solutions & Use Cases
      • Solutions
      • Use Case Library
    • Markets & Industries
      • Media production
      • Government & defense
      • Content distribution
      • Service providers
      • Partners
      • OSS/BSS
    • DataMiner Insights
      • Security
      • Integration Studio
      • System Architecture
      • DataMiner Releases & Updates
      • DataMiner Apps
    • Agile
      • Agile Webspace
      • Everything Agile
        • The Agile Manifesto
        • Best Practices
        • Retro Recipes
      • Methodologies
        • The Scrum Framework
        • Kanban
        • Extreme Programming
      • Roles
        • The Product Owner
        • The Agile Coach
        • The Quality & UX Coach (QX)
    • DataMiner DevOps Professional Program
  • Downloads
  • More
    • Feature Suggestions
    • Climb the leaderboard!
    • Swag Shop
    • Contact
      • General Inquiries
      • DataMiner DevOps Support
      • Commercial Requests
    • Global Feedback Survey
  • PARTNERS
    • All Partners
    • Technology Partners
    • Strategic Partner Program
    • Deal Registration
  • >> Go to dataminer.services

Dataminer problem: Database connection switched to file offload.

Solved1.17K views7th July 2021
1
Javier Gordon30 3rd July 2021 2 Comments

Good Morning,

Today we had this error on our DMA: Database connection switched to file offload, we review the dma and we see that the elements dont charge the trending, we restart the dma but always the dma get freeze on 99%, any idea or troubleshooting for this issue?

Regards

Javier Gordon Selected answer as best 7th July 2021
Carlos Trejo commented 5th July 2021

Hi Javier,

I would suggest you go to the Local folder and verify the size of this folder. You can find this at C:/Skyline DataMiner/system cache/.

Right click on that folder and if it has thousands of files, rename it to something else (e.g Local_old) then restart your DMA, this should allow your agent to start.

Cheers!

Javier Gordon commented 5th July 2021

Hi Carlos,

On saturday we don´t review the size of the folder, but on this moment the folder are empty.

Regards

2 Answers

  • Active
  • Voted
  • Newest
  • Oldest
2
Alexander Verriest [SLC] [DevOps Advocate]424 Posted 7th July 2021 0 Comments

Hi Javier,

Switching to file offload occurs when the connection to the database is severed. DataMiner will dump all the incoming data to files (located in C:\Skyline DataMiner\Offload), and will try to write these files back to the database once the connection is restored. During this time you will not be able to request data from the database (such as trending).

When starting up, DataMiner will delay its startup until it can write all the offload files to the database, so if a lot of data was offloaded this way, it can take a while to start up fully.

If DataMiner does not start up still, you can try to remove the files in the offload folder and see if it then starts up normally again. Note that data that could not be replayed to the database will be missing then, so for example trend graphs will show gaps during the time DataMiner was in offload mode.

Javier Gordon Selected answer as best 7th July 2021
2
Ben Vandenberghe [SLC] [DevOps Enabler]9.06K Posted 3rd July 2021 0 Comments

Hi Javier,

I'm not an expert, but it sounds like the DMA cannot reach the designated database, and hence it started putting its data into offload files, and hence you cannot charge trend data for elements.  That would be my first intuitive thinking.

Ben

Ben Vandenberghe [SLC] [DevOps Enabler] Answered question 3rd July 2021
Please login to be able to comment or post an answer.

My DevOps rank

DevOps Members get more insights on their profile page.

My user earnings

0 Dojo credits

Spend your credits in our swag shop.

0 Reputation points

Boost your reputation, climb the leaderboard.

Promo banner DataMiner DevOps Professiona Program
DataMiner Integration Studio (DIS)
Empower Katas

Recent questions

Web Applications exception in Cube due to invalid certificate 0 Answers | 0 Votes
Redundancy Groups and Alarming – Duplicate Alarms 0 Answers | 0 Votes
Correlation Engine: “Test rule” doesn’t result in a hit, despite functional rule 1 Answer | 3 Votes

Question Tags

adl2099 (115) alarm (62) Alarm Console (82) alarms (100) alarm template (83) Automation (223) automation scipt (111) Automation script (167) backup (71) Cassandra (180) Connector (109) Correlation (69) Correlation rule (52) Cube (151) Dashboard (194) Dashboards (188) database (83) DataMiner Cube (57) DIS (81) DMS (71) DOM (140) driver (65) DVE (56) Elastic (83) Elasticsearch (115) elements (80) Failover (104) GQI (159) HTTP (76) IDP (74) LCA (152) low code app (166) low code apps (93) lowcodeapps (75) MySQL (53) protocol (203) QAction (83) security (88) SNMP (86) SRM (337) table (54) trending (87) upgrade (62) Visio (539) Visual Overview (345)
Privacy Policy • Terms & Conditions • Contact

© 2025 Skyline Communications. All rights reserved.

DOJO Q&A widget

Can't find what you need?

? Explore the Q&A DataMiner Docs

[ Placeholder content for popup link ] WordPress Download Manager - Best Download Management Plugin