Key Takeaways

✓60%+ of Odoo performance issues are caused by "data obesity," not server issues

✓Use the built-in Data Cleaning app to merge duplicates (set threshold 90%+)

✓Archive old records instead of deleting—deleting breaks accounting links

✓Clean attachments quarterly—they're the #1 cause of bloated backups

✓Uninstall unused apps—every extra app adds columns that slow read/write

Quick Answer: You Don't Need to Be a Coder to Speed Up Odoo

When your Odoo system starts to lag—when searching for a customer takes 5 seconds instead of 1—the natural reaction is to blame the server or call a developer. But the truth? Over 60% of performance issues are caused by "data obesity." Just like a phone gets slow if you never delete old photos, your ERP gets sluggish if you hoard years of useless data. This guide focuses purely on the safe, functional tools built right into Odoo that anyone can use.

Step 1: The "Duplicate Data" Audit

Using the Data Cleaning App

The silent killer of database speed. Every duplicate contact or product forces Odoo to work harder during searches. In Odoo Enterprise, there is a dedicated app for this that most people ignore.

🔧 How to Fix It

Install the App

Go to Apps and search for "Data Cleaning" (official Odoo module)

Open the Dashboard

It automatically scans for duplicate Partners (customers/vendors)

Review & Merge

Odoo gives you a "similarity score" (e.g., 95% match). Click Merge to combine into one record.

Why this helps: It reduces the number of rows Odoo has to scan every time you create a quote.

💡 Pro Tip: Don't just auto-merge everything. Set the threshold to 90%+ to avoid accidental merges.

Need help configuring automated deduplication rules?

Step 2: The "Archive" Strategy

Stop Deleting, Start Hiding

The #1 mistake non-tech users make is trying to DELETE old data. In an ERP, you can rarely delete used data (e.g., an old sales order) because it's linked to accounting entries. If you try, you get an error.

📦 What Archiving Does

It flips a "switch" on the record from Active to Inactive. The data stays in the database for history, but Odoo stops loading it in daily searches and dropdown menus.

🎯 What to Archive Today

Old Products: Items you haven't sold in 2 years
Inactive Customers: Leads that went cold in 2022
Completed Projects: Tasks from finished jobs

📋 How to Bulk Archive

Go to Sales > Orders (or any list view like Contacts or Products)

Filter by date (e.g., "Order Date < 2023")

Select all records (click the checkbox at the top)

Click Action > Archive

✨ Result: Your "Search Customer" dropdown just got 40% faster.

Step 3: Clean Up Attachments

The Storage Hog

"Why is my backup 50GB?" If your team attaches high-res photos or PDF contracts directly to Odoo records, your database size explodes. This makes backups slow and everyday operations heavy.

🗑️ The Non-Tech Fix

Go to Settings > Technical > Database Structure > Attachments (requires Developer Mode)

Group by Mimetype or sort by File Size

Identify massive files (e.g., a 50MB video attached to a task)

Download them to your PC/Cloud storage and delete them from Odoo

⚠️ Warning: Be careful not to delete system assets (like your company logo). Only delete user-uploaded content.

Step 4: Automate Maintenance with Scheduled Actions

Set It and Forget It

Odoo has a built-in robot called "Scheduled Actions" that runs maintenance tasks at night. Often, these are turned off or set to run too frequently (slowing you down during the day).

⚙️ How to Check

Type "Scheduled Actions" in the main dashboard search

Look for "Base: Auto-vacuum internal data"

Ensure it is Active and set to run once per day (preferably at 3:00 AM)

✨ This action clears out temporary data and "dead" sessions that clog up memory.

Step 5: Uninstall Unused Apps

If You Aren't Using It, Kill It

Did you install "Fleet Management" just to look at it? Every installed app adds columns to your database tables. Even if empty, these extra columns slow down every read/write operation slightly.

🗑️ The Fix

Go to Apps

Filter by Installed

Ask your team: "Are we using the 'Gamification' module? What about 'Lunch'?"

If the answer is no, click Uninstall

⚠️ Note: Uninstalling is permanent. Backup your database first!

Frequently Asked Questions

Does archiving data reduce database size?

No, it does not reduce storage size (GB) because the data is still there. However, it significantly increases speed because Odoo filters out archived records from memory during daily operations.

Can I delete old Sales Orders to save space?

Generally, no. You should not delete confirmed Sales Orders as they are linked to Invoices and Stock Moves. Deleting them breaks your accounting trail. Always Archive them instead.

How often should I clean my Odoo database?

We recommend a "Spring Cleaning" once per quarter. Schedule a reminder to review duplicates, archive old products, and check attachment sizes every 3 months.

Why is my Odoo search so slow?

Slow searches are usually caused by: (1) Too many active records (archive old ones). (2) Duplicate contacts. (3) Missing database indexes (needs technical review). Start with archiving and deduplication—they solve 80% of search slowness.

Is it safe to do these optimizations myself?

Yes, for all 5 steps in this guide. They use Odoo's built-in tools and don't require code. However, always backup before uninstalling apps or doing bulk operations.

Conclusion: Maintenance is Performance

You don't need to be a database administrator to have a fast Odoo system. By simply being disciplined with your data—archiving the old, merging the duplicates, and removing the unused—you can keep your ERP running like a sports car.

Afraid to touch the "Delete" button? We understand. Data is precious. If you want a professional to audit your database safety before you clean it, we are here to help.

Want a Professional Database Audit First?

We'll guide you screen-by-screen to ensure zero data loss.

No-code solutions • Guided walkthrough • Zero data loss guarantee

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