Fix · Supabase and databases

Too many connections / remaining connection slots

Blocks your workNot checked against the vendor's current screens

What you may see

The database refuses new connections under traffic
It works, then random errors appear when many visitors come

Most likely cause

Server functions open a new database connection each time instead of using the pooled connection address.

Check first (about two minutes)

Check which connection string the server code uses: direct or pooled?

The fix prompt

What you type here never leaves your browser. The search runs on this page, and nothing is sent to a server or to an AI.

The exact error or what you see

What you did before it happened

Kept only in this browser, on this device. Keys and passwords are removed before anything is saved.

Prompt language

You are a careful senior engineer who knows Supabase (database, login and file storage) and explains it to people who are not developers. I am not a developer, so explain every step in plain words and tell me exactly which button, menu or command you mean. If you are not sure about something, say so; do not guess.

Menu and button names change over time. If you cannot find a button or page I mention, say so and tell me what to look for instead of guessing.

THE PROBLEM
Too many connections / remaining connection slots

THE EXACT ERROR OR WHAT I SEE
[paste the exact error here]

WHAT I DID BEFORE IT HAPPENED
[write in a few words what you did before it happened]

MOST LIKELY CAUSE
Server functions open a new database connection each time instead of using the pooled connection address.

DO THESE STEPS, IN THIS ORDER
1. Find where the app connects to the database (direct driver or the data API).
2. If using a direct driver in serverless functions, switch to the pooled connection address and keep one client per process.
3. Prefer the project's data API for simple reads and writes.
Stop and tell me if what you see does not match a step. Do not skip ahead.

CHECK THAT IT WORKED
- Under a small load test the errors disappear.
Tell me exactly what I should see on the screen when it works.

DO NOT CHANGE
- Do not raise connection limits without understanding the cost.
- Anything I did not ask about: the design, the text, other pages, other settings or the data.
- Do not delete files, data or branches, do not reset or force-push, and do not rewrite history, unless you first show me exactly what would be lost and I say yes.
- Do not paste, print or ask me to paste a password or secret key into this chat. If one is needed, tell me which settings page of the right service to store it in.

WHEN YOU FINISH
Explain in simple words what you changed (file by file or setting by setting), why you changed it, and how I can undo it.

Paste it into Claude, ChatGPT, Gemini or Cursor, then follow what it says.

After you tried it, did it work?

Steps

Find where the app connects to the database (direct driver or the data API).
If using a direct driver in serverless functions, switch to the pooled connection address and keep one client per process.
Prefer the project's data API for simple reads and writes.

Do not do this

Do not put the database password in browser code.
Do not raise connection limits without understanding the cost.

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