Hello Daniel,

I add a look to the db_unixodbc and the presence modules. To correct the
ODBC replace query that is visibly not supported by Oracle, I would like to
add a new parameter in the db_unixodbc module : replaceQuery = {0:1}. 0 =
not supported, 1 = supported (default).

Now, in the presence module, I found this comment :

	if (pa_dbf.replace != NULL)
	{
		if(pa_dbf.replace(pa_db, db_keys, db_vals, n_query_cols,
					2, 0) < 0)
                  ...
	}
	else
	{
		*/* If you use insert() instead of replace() be prepared for some
		 * DB error messages.  There is a lot of time between the
		 * query() that indicated there was no matching entry in the DB
		 * and this insert(), so on a multi-user system it is entirely
		 * possible (even likely) that a record will be added after the
		 * query() but before this insert(). */*
		if(pa_dbf.insert(pa_db, db_keys, db_vals, n_query_cols )< 0)

What will happen if we do inserts only? Will the table grow? Is there a
purge mechanism somewhere?

Would it be possible in the replace method to do an update and in case of
error, do an insert?

What is your opinion?