ORA-00942 when creating external table under 10g with AQ

Question

I have an application that runs with AQ. The front-end queues up batch-type
tasks in a queue. When one particular kind of message is dequeued, it
initiates a data load. That load requires the creation of an external
table.
The schema in question is owned by user BL (bulkload). The queue
is owned by BLB (bulkload batch), primarily to simplify some of the
rules needed by the resource manager in order to limit the total CPU
a batch process can consume. The BLB user has full access to the
BL schema, along with the following rights:
CREATE TYPE
CREATE TABLE
CREATE SEQUENCE
CREATE PROCEDURE
CREATE VIEW
CREATE SYNONYM
CREATE SEQUENCE
ALTER SESSION
CREATE SESSION
QUERY REWRITE
CREATE ANY CONTEXT
EXECUTE_CATALOG_ROLE
CREATE MATERIALIZED VIEW
CREATE ANY DIRECTORY
DROP ANY DIRECTORY
The table creation works fine under 9.2.0.8 (our current required
version). However the application generates an ORA-00942 table or view does
not exist when run under 10g (10.2.0.1 and 10.2.0.3).
The following statement is the problem:
CREATE TABLE bulkload33 (
          field1 VARCHAR2(2000),field2 VARCHAR2(2000),field3 VARCHAR2(2000))
          ORGANIZATION EXTERNAL (
          TYPE oracle_loader DEFAULT DIRECTORY EXT_100
          ACCESS PARAMETERS ( RECORDS DELIMITED BY "\r\n"
          CHARACTERSET 'WE8ISO8859P1'
          BADFILE EXT_100:'bulkload_bad.csv'
          LOGFILE EXT_100:'bulkload_log.csv'
          FIELDS TERMINATED BY ','
          OPTIONALLY ENCLOSED BY '"' MISSING FIELD VALUES ARE NULL REJECT ROWS WITH ALL NULL FIELDS (
          field1 CHAR(2000),field2 CHAR(2000),field3 CHAR(2000),field4 CHAR(2000)))
          LOCATION ('bulkload.csv')
          ) REJECT LIMIT UNLIMITED PARALLEL;
To clarify, the preceding statement, when handled by the process
for a queue message, failes with an ORA-00942.
Note that I can issue the command directly, as BLB or SYS, against
the BL schema with no problems. Further, as user BLB or SYS, I can do
the following:
CREATE OR REPLACE PROCEDURE dotest
IS
     l_sql varchar2(2000);
BEGIN
     l_sql := 'CREATE TABLE bulkload33 (
          field1 VARCHAR2(2000),field2 VARCHAR2(2000),field3 VARCHAR2(2000))
          ORGANIZATION EXTERNAL (
          TYPE oracle_loader DEFAULT DIRECTORY EXT_100
          ACCESS PARAMETERS ( RECORDS DELIMITED BY "\r\n"
          CHARACTERSET ''WE8ISO8859P1''
          BADFILE EXT_100:''bulkload_bad.csv''
          LOGFILE EXT_100:''bulkload_log.csv''
          FIELDS TERMINATED BY '',''
          OPTIONALLY ENCLOSED BY ''"'' MISSING FIELD VALUES ARE NULL REJECT ROWS WITH ALL NULL FIELDS (
          field1 CHAR(2000),field2 CHAR(2000),field3 CHAR(2000),field4 CHAR(2000)))
          LOCATION (''bulkload.csv'')
          ) REJECT LIMIT UNLIMITED PARALLEL';
     EXECUTE IMMEDIATE l_sql;
END;
show errors
EXEC dotest
Does anyone have any ideas of why this doesn't work under 10g? Metalink
has yielded no clues so far.
Thanks.

Answer 1

Define "has full access to the BL schema" given that it is impossible to grant access rights, in Oracle, by schema. What was done and how was it done?
My guess is that the privs were granted in a role, rather than explicitly, as is required for PL/SQL.