Conventions Make for Easy Automation

#!/bin/bash -e
 check_dg()
 {
  dgmgrl -echo << EOF
  connect /
  show configuration
  show database ${ORACLE_SID}a
  show database ${ORACLE_SID}b
  exit
 EOF
 }
 check_dg
 exit

#!/bin/bash -e
 DN=`dirname $0`
 BN=`basename $0`
 ST=${2:?"---> USAGE: $DN/$BN ORACLE_UNQNAME <ON|OFF>"}
 check_dg()
 {
  dgmgrl -echo << EOF
  connect /
  show configuration
  edit database ${ORACLE_UNQNAME} set state=TRANSPORT-${ST};
  show database ${ORACLE_UNQNAME}
  exit
 EOF
 }
 check_dg
 exit