Hi Jose,
sorry i maybe was not specific enough.
Can you please exp(dp) a few sample data sets of the table with the LOB and attach the dump file here (with something like this in the WHERE clause "rownum < 500").
> In addition I have just run the same query in another 11.2.0.3 database with the event where we have not still reorg the table and the ACG_ROW_LEN 46..
Yes, but when were the statistics gathered (this is important)? You can crosscheck the "AVG_ROW_LEN" easily by using the PL/SQL procedure UTL_RAW.LENGTH on field VARDATA and calculate the average length of it. The other columns should not be the main space "causer" here.
Regards
Stefan