Oracle:
The schema user must have the following database roles:
CONNECT
RESOURCE
MS SQL: DBO privilege
Here is a link to the R14.s documentation on DB installs:
https://techdocs.broadcom.com/us/en/symantec-security-software/identity-security/identity-portal/14-2/installing/installing-ca-identity-portal/ca-identity-portal-installation/installing-a-database.html