How does log backup with caching differ from traditional transaction log backups in Commvault?

Traditional transaction log backups require the Command Center to initiate each job, which creates job manager congestion and stops backups during control plane outages. Log backup with caching uses background dump processes that write logs to a temporary cache independently of the control plane, then sweep jobs periodically commit cached logs to storage. This architecture continues protecting databases even when Command Center is unavailable and reduces job manager visibility clutter.

Will I lose visibility into transaction log backup failures with dump processes running in the background?

No. While dump processes don't appear in the job manager, failures are tracked through SLA reports in Command Center and can trigger configured alerts. Sweep jobs that commit cached logs to storage remain fully visible in the job manager, providing tracking and progress monitoring for the final commit stage.

Commvault: Log Backup with Caching...A Step-by-Step Database Guide

Name: Commvault: Log Backup with Caching...A Step-by-Step Database Guide
Uploaded: 2026-02-12T10:56:25-05:00
Duration: 5 min 32 s
Description: This tutorial demonstrates how to configure and use log backup with caching in Commvault Command Center, a feature designed to improve the reliability and performance of transaction log backups for databases including SQL Server, Oracle, SAP HANA, and ...

commvault

02/12/2026

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TL;DR

Log backup with caching will become the default behavior in Commvault 11.38.26, introducing a two-stage backup process that writes transaction logs to a temporary cache before committing them to final storage.
The new architecture uses background dump processes and scheduled sweep jobs to reduce job manager congestion and prevent backup gaps when the Command Center control plane is unavailable.
Configuration is straightforward through Command Center backup plans, where administrators can enable disk caching and set sweep job frequency in hourly increments starting at one hour minimum.

This tutorial demonstrates how to configure and use log backup with caching in Commvault Command Center, a feature designed to improve the reliability and performance of transaction log backups for databases including SQL Server, Oracle, SAP HANA, and DB2. The video explains how traditional transaction log backups can create job manager congestion and leave databases vulnerable to backup gaps when the Command Center control plane experiences downtime. Log backup with caching addresses these challenges by introducing a two-stage process: dump processes that run in the background and write transaction logs to a temporary cache, followed by sweep jobs that commit cached logs to final storage on a scheduled basis. This architecture ensures continuous database protection even during control plane outages, prevents job backlogs, and reduces visibility clutter in the job manager. The presenter walks through the configuration process in Command Center, showing how to enable caching within backup plans and adjust sweep job frequency. The video also covers monitoring and alerting capabilities through SLA reports, ensuring administrators maintain visibility into backup health despite the background nature of dump processes. With this feature becoming the default behavior in Commvault version 11.38.26, the tutorial provides essential guidance for database and backup administrators preparing for this architectural shift in transaction log protection.

Chapters

0:00 - Introduction to Log Backup with Caching
1:01 - Traditional Transaction Log Backup Process
1:35 - How Caching Changes the Workflow
2:56 - Enabling Caching in Command Center
4:27 - Monitoring and SLA Reporting

Key Quotes

0:07 - this feature already does exist and helps to manage transaction log backups, but because it is so useful, as I mentioned, it's going to become the default
0:41 - if the control plane has any issues and the comm serve goes down, well, unfortunately, those jobs start running and that can create a very large backlog
2:38 - The biggest benefit of this is that, if there is a failure with command center, then your jobs will still continue to run on the backend. There's no downtime and there's no getting a large backlog of transaction logs to chew through when everything is back up.

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