$ pkill tnslsnr
sql> connect / as sysdba sql> startup force RESTRICTED pfile=hoge.ora sql> shutdown immediate sql> exit;
参考
http://tomclegg.net/oracle9i-bsd5
http://otndnld.oracle.co.jp/document/products/oracle11g/111/doc_dvd/server.111/E05784-01/ch12045.htm