I use Alfresco 4.2.c and I have access to the database. Is it possible to change a simple user (I have integration with LDAP) to admin one (through the databbase)? Or I specificly need to do that by using the admin user?
If there's alfrescoNtlm in your authentication chain, you can add your simple user to ALFRESCO_ADMINISTRATORS group with the admin user. If not, you can add the login of your simple user in the ldap.authentication.defaultAdministratorUserNames parameter of your LDAP configuration.