RDS is not listing down lambda RDS proxy creation page

Hi there!

I'm not sure I understand your question, but let's start with this: I understand you have already an RDS Instance for PostgreSQL 15.2 and you want to create a proxy for this RDS instance so that your Lambda functions can connect to the database. If this is the case, you should be able to:

1. Open the RDS Console
2. Select Proxies on the left menu
3. Click the Create Proxy orange button on the top right corner
4. Select PostgreSQL
5. Enter the name (identifier) of the proxy
6. Select as the target database your PostgreSQL database from the dropdown
7. Add any other configuration settings
8. Scroll down and select the Create Proxy button at the end of the page

This will create the proxy targeting your database and should be listed in the proxies page. Once the status is Available, then you can use the proxy endpoint from your Lambda to connect to your database.

I hope this helps.