svrmgrl returns errors on startup

svrmgrl runs fine from the command line, but when called from a shell script returns the following errors:

ORA-00205: error in identifying control file '/dbf07/uaprorafiles/control/control01.dbf' ORA-09782: sfifi: another instance has the same database mounted.

The (simplified) script looks like so:

svrmgrl << EOF
connect internal
startup
EOF All environment variables and permissions seem to be fine. Any ideas?

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