org.postgresql.util.PSQLException: ERROR: column "file" is of type oid but expression is of type bytea

I want to implement file upload into PostgreSQL using JSF page. I tried this
code:

public void upload() throws SQLException, GSSException
{
if (file != null)
{
try
{
InputStream inputStream = file.getInputStream();
Connection conn = ds.getConnection();
PreparedStatement ps = null;
boolean committed = false;
try
{
conn.setAutoCommit(false);

ps = conn.prepareStatement("INSERT INTO PROCEDURE_FILES (ID,
PROCEDURE_ID, FILE_NAME, FILE) "
+ " VALUES (?, ?, ?, ?)");
ps.setInt(1, obj.number);
ps.setInt(2, obj.number);
ps.setString(3, file.getSubmittedFileName());

ps.setBinaryStream(4, inputStream, inputStream.available());

ps.executeUpdate();
ps.close();

conn.commit();
committed = true;
}
catch (SQLException e)
{
e.printStackTrace();
}

finally
{
if (!committed)
{
conn.rollback();
}

if (ps != null)
{
ps.close();
}
conn.close();
}

FacesContext.getCurrentInstance().addMessage(null, new
FacesMessage("Upload successfully ended!"));
}
catch (IOException e)
{
FacesContext.getCurrentInstance().addMessage(null, new
FacesMessage("Upload failed!"));
}
}
}

But I get error error:

org.postgresql.util.PSQLException: ERROR: column "file" is of type oid but
expression is of type bytea
Hint: You will need to rewrite or cast the expression.
Position: 86

What is the proper way to cast the Object?

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