After an update from 9i

Question

I used this query:
SELECT TABLE_NAME, COLUMN_NAME, DATA_TYPE, DATA_PRECISION "PREC.", DATA_SCALE SCALE
FROM USER_TAB_COLUMNS
WHERE DATA_TYPE = 'NUMBER'
ORDER BY TABLE_NAME, COLUMN_NAME ;
and I got several rows of this garbage:
TABLE_NAME COLUMN_NAME DATA_TYPE PREC. SCALE
BIN$AfddYlcqpBrgQPGE5Y ROUTE# NUMBER 6 0
53UQ==$0
I get this output along with the correct display of my tables at the end. After revising the query to:
SELECT TABLE_NAME, COLUMN_NAME, DATA_TYPE, DATA_PRECISION "PREC.", DATA_SCALE SCALE
FROM USER_TAB_COLUMNS
WHERE DATA_TYPE = 'NUMBER'
AND LENGTH(TABLE_NAME) < 30
ORDER BY TABLE_NAME, COLUMN_NAME ;
my output is normal, listing just what I have in my tables:
TABLE_NAME COLUMN_NAME DATA_TYPE PREC. SCALE
MAINTENANCE_SESSION EMP#_INSPECTOR NUMBER 6 0
What data am I looking at? And why does it still appear even if I remove the tables?
BIN$AfddYlcqpBrgQPGE5Y
53UQ==$0
is not a table name.

Answer 1

Hi,
They are tables from your recycling bin. If you want to undelete a table (possible in 10g) then Oracle recovers data from these tables.
Hope that helps,
Rod West