Considering that you are familiar with the Korn shell, there's no reason to give up on that knowledge. Use nested here documents, one in Perl, the other in the shell (untested code): 
my $output = <<`EOT1`;
sqlplus.exe -s uid/pwd\@myserver <<EOT
select * from emp;
exit
EOT
EOT1

... do something with $output ...

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In reply to Re: Question on inline redirection by JavaFan
in thread Question on inline redirection by jujiro_eb

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