dbms_aqadm.create_queue_table ORA-00955: name is already used by an existing object

Oracle Database 11g Enterprise Edition Release - 64bit Production
PL/SQL Release - Production
CORE      Production
TNS for 64-bit Windows: Version - Production
NLSRTL Version - Production

I get the following error when running this "create_queue_table" command.  

SQL> begin
  2        sys.dbms_aqadm.create_queue_table (
  3           queue_table             =>   'QUEUEOWNER.REPORT_REQUEST_QT',
  4           queue_payload_type  =>   'SYS.XMLTYPE',
  5           compatible             =>   '10.0.0',
  6           sort_list             =>   'PRIORITY',
  7           multiple_consumers  =>   TRUE,
  8           message_grouping    =>   DBMS_AQADM.NONE,
  9           secure             =>   FALSE,
 10           storage_clause      =>   'NOCOMPRESS
 11                               TABLESPACE QUEUEOWNER
 12                               RESULT_CACHE (MODE DEFAULT)
 13                               PCTUSED 40
 14                               PCTFREE 10
 15                               INITRANS 1
 16                               MAXTRANS 255
 17                               STORAGE (
 18                                       INITIAL 16K
 19                                       NEXT 16K
 20                                       MAXSIZE UNLIMITED
 21                                       MINEXTENTS 1
 22                                       MAXEXTENTS UNLIMITED
 23                                       PCTINCREASE 0
 24                                       FREELISTS 1
 25                                       FREELIST GROUPS 1
 26                                       BUFFER_POOL DEFAULT
 27                                       FLASH_CACHE DEFAULT
 28                                       CELL_FLASH_CACHE DEFAULT)');
 29  end;
 30  /
ERROR at line 1:
ORA-00955: name is already used by an existing object
ORA-06512: at "SYS.DBMS_AQADM", line 81
ORA-06512: at line 2

However, the object does not exist:
SQL> select * from dba_objects where object_name='REPORT_REQUEST_QT';

no rows selected

SQL> select * from sys.obj$ where name='REPORT_REQUEST_QT';

no rows selected
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slightwv (䄆 Netminder) Commented:
Looks like something in the AQ world got confused at some point in the setup.

There are several steps you can follow to get everything cleaned up on Oracle Support:
Procedures to Remove Orphan AQ Objects Which Fail to Drop via DBMS_AQADM (Doc ID 236898.1)
ciphersolAuthor Commented:
I'll take a look at the reference you provided.  

What's weird about my problem is this it is a clean database.  
In fact, after you  made this post, I dropped the entire database and recreated it. I then ran the create scripts and I still get this error.
slightwv (䄆 Netminder) Commented:
That is a little weird.

I ran what you posted against my play database.  I removed the schema and tablespace name but it ran just fine.  I could drop it and recreate it at will.

It is starting to sound like it might be a bug.
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ciphersolAuthor Commented:
The problem was with the scripts themselves.  
A sequence (AQ$_REPORT_REQUEST_QT_N), that shouldn't have been created, was being created by the scripts.   The sequence was the cause of the ORA-00955.

Thanks for the input slightwv.

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slightwv (䄆 Netminder) Commented:
Glad you were able to find it.
ciphersolAuthor Commented:
The problem was unique to the scripts being executed.
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