OCI IAM URL
Your authentication URL is the one used when you first access any of your cloud services and are redirected to a login screen. You will get the base URL from the login screen and combine it with the necessary path to fetch the authentication token.
Example Base URL: https://oci—iam-a4cbf187f29d4f41bc03fffb657d5513.identity.oraclecloud.com/
Using the above URL, IDCS_URL
= https://oci—iam-a4cbf187f29d4f41bc03fffb657d5513.identity.oraclecloud.com/oauth2/v1/token