I have an application that runs certain jobs in oem11g directly from the oem-database using the sysman.mgmt_jobs package and the submit_job_from_library procedure. After moving to oem13c, I tried to do a similar job launch using the sysman package.gc_job (as oracle advises in the package comments), a job is created, but with the credentials missing error. I don't know what else to try :(
I looked through all the procedures, compared jobs that work without errors with my own. I checked the MGMT_CREDENTIALS2_E table, tried to run it directly through the sysman.em_job_ops package. I did not find any information about the use of these packages