A.sqlplus secnet/secnet@192.168.110.200/1521/ora11gB.sqlplus secnet/secnet@192.168.110.200:ora11gC.sqlplus secnet/secnet@192.168.110.200:1521D.sqlplus secnet/secnet@192.168.110.200:1521/ora11g
A.comitB.commitC.submitD.refer
A.drop tablespace tablespace_name;B.drop tablespace tablespace_name including contents;C.drop tablespace tablespace_name including contents and datafiles;D.drop tablespace tablespace_name including datafiles;