Description of problem:
Upgrading 5.6.0 with embedded PostgreSQL including OS upgrade fails on spacewalk-dump-schema with: DBI connect('rhnschema','rhnuser',...) failed: ORA-12154: TNS:could not resolve the connect identifier specified (DBD ERROR: OCIServerAttach) at ./spacewalk 


Version-Release number of selected component (if applicable):
Upgrading from: Satellite 5.6.0 (up2date) @ embedded PostgreSQL @ RHEL5
Using: rhn-upgrade-5.7.0.6-1.el5sat


How reproducible:
always


Steps to Reproduce:
1. Have 5.6.0 with embedded PostgreSQL @ RHEL5
2. Follow upgrade docs and then in satellite-and-os-upgrade-postgresql.txt
   step 1 there is:

| 1. Create database schema export for migration.
| 
| In this step, you will create an export of your current database schema, that
| later in the process you will import into your newly built Satellite.
| 
| Run as root:
| 
|     cd /etc/sysconfig/rhn/satellite-upgrade/scripts
|     ./spacewalk-dump-schema | \
|         bzip2 -7c - | \
|         split -d -b 2147483648 - /some/storage/path/schema-dump-
| 
| Please have the schema dump files ready for import later in the process.


Actual results:
# ./spacewalk-dump-schema | \
>         bzip2 -7c - | \
>         split -d -b 2147483648 - /tmp/BACKUP-
DBI connect('rhnschema','rhnuser',...) failed: ORA-12154: TNS:could not resolve the connect identifier specified (DBD ERROR: OCIServerAttach) at ./spacewalk-dump-schema line 59


Expected results:
Dump should proceed. Probably that step is meant to include pg_dump command? Or maybe I'm mistakenly in incorrect upgrade process branch?