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select p.spid,
       a.serial#,
       c.object_name,
       b.session_id,
       b.oracle_username,
       b.os_user_name
  from v$process       p,
          v$session       a,
          v$locked_object b,
          all_objects     c
 where p.addr = a.paddr
   and a.process = b.process
   and c.object_id = b.object_id


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is
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try
{
con.Open();
}
catch
{}
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{
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