oravis .bash_profile increase the following line:
. /u01/oravis/visdb/9.2.0/VIS_rhel39.env
Re-enter oravis
[oravis@rhel39 oravis]$ set | grep -i ora
ADJVAPRG=/u01/oravis/visdb/9.2.0/jre/1.4.2/bin/java
ADPERLPRG=/u01/oravis/visdb/9.2.0/Apache/perl/bin/perl
CONTEXT_FILE=/u01/oravis/visdb/9.2.0/appsutil/VIS_rhel39.xml
HISTFILE=/home/oravis/.bash_history
HOME=/home/oravis
LD_LIBRARY_PATH=/u01/oravis/visdb/9.2.0/lib:/usr/X11R6/lib:/usr/openwin/lib:/u01/oravis/visdb/9.2.0/ctx/lib
LIBPATH=/u01/oravis/visdb/9.2.0/lib:/usr/X11R6/lib:/usr/openwin/lib:/u01/oravis/visdb/9.2.0/ctx/lib
LOGNAME=oravis
MAIL=/var/spool/mail/oravis
ORACLE_HOME=/u01/oravis/visdb/9.2.0
ORACLE_SID=VIS
ORA_TZFILE=/u01/oravis/visdb/9.2.0/oracore/zoneinfo/timezlrg.dat
PATH=/u01/oravis/visdb/9.2.0/Apache/perl/bin:/u01/oravis/visdb/9.2.0/bin:/usr/bin:/usr/sbin:/u01/oravis/visdb/9.2.0/jre/1.4.2/bin:/usr/ccs/bin:/bin:/usr/bin/X11:/usr/local/bin:/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin:/home/oravis/bin
PERL5LIB=/u01/oravis/visdb/9.2.0/Apache/perl/lib/5.00503:/u01/oravis/visdb/9.2.0/Apache/perl/lib/site_perl/5.005:/u01/oravis/visdb/9.2.0/appsutil/perl
PERLBIN=/u01/oravis/visdb/9.2.0/Apache/perl/bin
PWD=/home/oravis
SHLIB_PATH=/u01/oravis/visdb/9.2.0/lib:/usr/lib:/u01/oravis/visdb/9.2.0/ctx/lib
TNS_ADMIN=/u01/oravis/visdb/9.2.0/network/admin/VIS_rhel39
USER=oravis
CONTEXT_NAME=VIS_rhel39
sqlplus "/ as sysdba"