MongoDB Archives - Virtual-DBA Remote DBA Services & Support - Certified Database Experts https://virtual-dba.com/blog/mongodb/ Remote Database Administration Wed, 18 Feb 2026 16:58:24 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://virtual-dba.com/wp-content/uploads/cropped-VirtualDBA-favicon-32x32.png MongoDB Archives - Virtual-DBA Remote DBA Services & Support - Certified Database Experts https://virtual-dba.com/blog/mongodb/ 32 32 A Case Study: Diagnosing a Stalled MongoDB TTL Monitor https://virtual-dba.com/blog/case-study-diagnosing-a-stalled-mongodb-ttl-monitor/ Tue, 17 Feb 2026 16:00:00 +0000 https://virtual-dba.com/?p=243656 SUMMARY: A comprehensive health check of a MongoDB replica set revealed that severe performance degradation was caused by a stalled TTL (Time-To-Live) Monitor on an undersized cluster, which was successfully resolved by scaling compute instances and manually purging expired data. This case highlights the necessity of correctly sizing database infrastructure to match data volume and […]

The post A Case Study: Diagnosing a Stalled MongoDB TTL Monitor appeared first on Virtual-DBA Remote DBA Services & Support - Certified Database Experts.

]]> When MongoDB Refuses Connections After a Restart — Lessons from a Disk-Full Crash https://virtual-dba.com/blog/when-mongodb-refuses-connections-after-restart-lessons-from-disk-full-crash/ Tue, 14 Oct 2025 22:12:40 +0000 https://virtual-dba.com/?p=243400 Summary When a high-volume insert workload caused a MongoDB server running on Ubuntu to crash due to 100% disk utilization, the WiredTiger storage engine’s inability to complete mandatory recovery prevented the database from binding to its connection port until sufficient disk space was available. To prevent severe database outages, organizations must adopt proactive capacity monitoring and ensure […]

The post When MongoDB Refuses Connections After a Restart — Lessons from a Disk-Full Crash appeared first on Virtual-DBA Remote DBA Services & Support - Certified Database Experts.

]]> Business Benefits of MongoDB Database System for Companies https://virtual-dba.com/blog/business-benefits-of-mongodb-database-system-for-companies/ https://virtual-dba.com/blog/business-benefits-of-mongodb-database-system-for-companies/#respond Fri, 30 Jun 2023 20:27:17 +0000 https://virtual-dba.com/?p=241786 MongoDB is a high-performance, document-oriented database system that provides significant benefits for businesses across a wide range of industries. This is a comprehensive analysis of the business benefits of MongoDB. Use Cases and Industries MongoDB is widely used and accepted in a variety of niches and industries, including: Technical Characteristics and Advantages Concrete and Measurable […]

The post Business Benefits of MongoDB Database System for Companies appeared first on Virtual-DBA Remote DBA Services & Support - Certified Database Experts.

]]> https://virtual-dba.com/blog/business-benefits-of-mongodb-database-system-for-companies/feed/ 0 10 MongoDB Mistakes Companies Should Avoid https://virtual-dba.com/blog/10-mongodb-mistakes-companies-should-avoid/ https://virtual-dba.com/blog/10-mongodb-mistakes-companies-should-avoid/#respond Tue, 02 May 2023 19:42:07 +0000 https://virtual-dba.com/?p=241510 MongoDB is one of the most popular NoSQL databases for modern web applications. It is designed to be scalable, flexible, and easy to use. However, like any technology, it is not immune to misuse or abuse. In this article, we will discuss the top 10 things a company should not do with MongoDB. MongoDB is […]

The post 10 MongoDB Mistakes Companies Should Avoid appeared first on Virtual-DBA Remote DBA Services & Support - Certified Database Experts.

]]> https://virtual-dba.com/blog/10-mongodb-mistakes-companies-should-avoid/feed/ 0 Self-Managed vs Cloud-Managed MongoDB: Pros and Cons https://virtual-dba.com/blog/self-managed-vs-cloud-managed-mongodb-pros-and-cons/ https://virtual-dba.com/blog/self-managed-vs-cloud-managed-mongodb-pros-and-cons/#respond Thu, 20 Apr 2023 20:00:43 +0000 https://virtual-dba.com/?p=241488 MongoDB is a popular NoSQL database management system known for its flexibility, scalability, and ease of use. Developers widely use it to build web applications, mobile applications, and other software systems. In addition, MongoDB can be used as a self-managed solution, where developers need to set up and manage the database themselves, or as a […]

The post Self-Managed vs Cloud-Managed MongoDB: Pros and Cons appeared first on Virtual-DBA Remote DBA Services & Support - Certified Database Experts.

]]> https://virtual-dba.com/blog/self-managed-vs-cloud-managed-mongodb-pros-and-cons/feed/ 0 MongoDB – WARNING: This replica set was configured with protocol version 0 https://virtual-dba.com/blog/mongodb-warning-this-replica-set-was-configured-with-protocol-version-0/ https://virtual-dba.com/blog/mongodb-warning-this-replica-set-was-configured-with-protocol-version-0/#respond Tue, 21 Apr 2020 19:38:08 +0000 https://virtual-dba.com/?p=37323 If you’re upgrading a ReplicaSet from a version before 3.2 of MongoDB to a new version, you will run into this warning when connecting to the shell. Protocol Version 0 is not supported in MongoDB 4.0. Checking Protocol Compatibility To verify which protocol version the ReplicaSet is using, run the below command: rs.status().optimes.lastCommittedOpTime.t If the […]

The post MongoDB – WARNING: This replica set was configured with protocol version 0 appeared first on Virtual-DBA Remote DBA Services & Support - Certified Database Experts.

]]> https://virtual-dba.com/blog/mongodb-warning-this-replica-set-was-configured-with-protocol-version-0/feed/ 0 MongoDB – WARNING: readConcern:majority is enabled https://virtual-dba.com/blog/mongodb-warning-readconcern-majority-is-enabled/ https://virtual-dba.com/blog/mongodb-warning-readconcern-majority-is-enabled/#respond Thu, 02 Apr 2020 20:07:46 +0000 https://virtual-dba.com/?p=37264 If you’re running a 3 member ReplicaSet that uses an Arbiter as its third member, then you will be presented with this warning when you connect to the shell. When a node goes down in a PSA architecture (Primary, Secondary, Arbiter) the wiredTiger storage engine starts generating what’s known as cache pressure. If your readConcern […]

The post MongoDB – WARNING: readConcern:majority is enabled appeared first on Virtual-DBA Remote DBA Services & Support - Certified Database Experts.

]]> https://virtual-dba.com/blog/mongodb-warning-readconcern-majority-is-enabled/feed/ 0 MongoDB – WARNING: This server is using MONGODB-CR https://virtual-dba.com/blog/mongodb-warning-this-server-using-mongodb-cr/ https://virtual-dba.com/blog/mongodb-warning-this-server-using-mongodb-cr/#respond Thu, 26 Mar 2020 21:37:21 +0000 https://virtual-dba.com/?p=37237 MongoDB-CR is the challenge response authentication mechanism used in MongoDB versions before 4.0. In version 4.0 this mechanism is removed and you must upgrade to the new mechanism SCRAM before you upgrade to 4.0. You will receive this warning if you have launched your instance and you have credentials that are stored with MongoDB-CR. **This […]

The post MongoDB – WARNING: This server is using MONGODB-CR appeared first on Virtual-DBA Remote DBA Services & Support - Certified Database Experts.

]]> https://virtual-dba.com/blog/mongodb-warning-this-server-using-mongodb-cr/feed/ 0 MongoDB – WARNING: This Server is bound to localhost https://virtual-dba.com/blog/mongodb-warning-this-server-is-bound-to-localhost/ https://virtual-dba.com/blog/mongodb-warning-this-server-is-bound-to-localhost/#respond Fri, 20 Mar 2020 20:06:17 +0000 https://virtual-dba.com/?p=37216 When you’re upgrading from previous versions before 3.6 you might notice this warning showing up in the shell when you start the server for the first time. This warning is telling you that you don’t have an IP bound to your instance, preventing any connections to the instance. BindIP There are two ways to apply […]

The post MongoDB – WARNING: This Server is bound to localhost appeared first on Virtual-DBA Remote DBA Services & Support - Certified Database Experts.

]]> https://virtual-dba.com/blog/mongodb-warning-this-server-is-bound-to-localhost/feed/ 0 MongoDB – Disabling Transparent Huge Pages Ubuntu 16.04+ https://virtual-dba.com/blog/mongodb-disabling-transparent-huge-pages-ubuntu-16-04/ https://virtual-dba.com/blog/mongodb-disabling-transparent-huge-pages-ubuntu-16-04/#respond Thu, 12 Mar 2020 18:59:50 +0000 https://virtual-dba.com/?p=37189 When running a MongoDB instance, it’s always important and even recommended to disable Transparent Huge Pages. Database workload can be poor when THP is enabled. Service File This service will allow you to disable THP during startup. Create the service file we’ll use. sudo touch /etc/systemd/system/mongodb-thp-never.service Edit the file and insert the text below, your […]

The post MongoDB – Disabling Transparent Huge Pages Ubuntu 16.04+ appeared first on Virtual-DBA Remote DBA Services & Support - Certified Database Experts.

]]> https://virtual-dba.com/blog/mongodb-disabling-transparent-huge-pages-ubuntu-16-04/feed/ 0