ORA-39126 during an export of a partition via dbms_datapump

Question

Hi ,
i did export using datapump in command line everything went fine but while exporting via dbms_datapump i got this:
ORA-39126 during an export of a partition via dbms_datapump
ORA-00920
'SELECT FROM DUAL WHERE :1' P20060401
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 95
ORA-06512: at "SYS.KUPW$WORKER", line 6228
the procedure is:
PROCEDURE pr_depura_bitacora
IS
l_job_handle NUMBER;
l_job_state VARCHAR2(30);
l_partition VARCHAR2(30);
v_sql VARCHAR2(2000);
BEGIN
-- Create a user-named Data Pump job to do a "table:partition-level" export
-- Local
select 'P'|| to_char((select min(STP_LOG_DATE) from SAI_AUDITBITACORA),'YYYYMM')||'01'
into l_partition
from user_tab_partitions
where table_name = 'SAI_AUDITBITACORA'
and rownum = 1;
l_partition := rtrim (l_partition,' ');
l_job_handle:= DBMS_DATAPUMP.OPEN
operation=>'EXPORT',
job_mode =>'TABLE',
job_name =>'EXPORT_ORACLENSSA'
-- Schema filter
DBMS_DATAPUMP.METADATA_FILTER
handle => l_job_handle,
name => 'SCHEMA_EXPR',
value => 'IN (''ORACLENSSA'')'
DBMS_OUTPUT.PUT_LINE('Added filter for schema list');
-- Table filter
DBMS_DATAPUMP.METADATA_FILTER
handle => l_job_handle,
name => 'NAME_EXPR',
value => '=''SAI_AUDITBITACORA'''
DBMS_OUTPUT.PUT_LINE('Added filter for table expression');
-- Partition filter
DBMS_DATAPUMP.DATA_FILTER
handle => l_job_handle,
name => 'PARTITION_EXPR',
value => l_partition,
table_name => 'SAI_AUDITBITACORA'
DBMS_OUTPUT.PUT_LINE('Partition filter for schema list');
DBMS_DATAPUMP.ADD_FILE
handle => l_job_handle,
filename => 'EXP'||l_partition||'.DMP',
directory => 'EXP_DATA_PUMP',
filetype => 1
DBMS_DATAPUMP.ADD_FILE
handle => l_job_handle,
filename => 'EXP'||l_partition||'.LOG',
directory => 'EXP_DATA_PUMP',
filetype => 3
DBMS_DATAPUMP.START_JOB
handle => l_job_handle,
skip_current => 0
DBMS_DATAPUMP.WAIT_FOR_JOB
handle => l_job_handle,
job_state => l_job_state
DBMS_OUTPUT.PUT_LINE('Job completed - job state = '||l_job_state);
DBMS_DATAPUMP.DETACH(handle=>l_job_handle);
END;
I've already drop and recreate the directory, granted read, write to public and to user, grant create session, create table, create procedure, exp_full_database to user, restart the database and the listener with the var LD_LIBRARY pointing first to $ORACLE_HOME/lib, and add more space to temporary tablespace.

Answer 1

The basic problem is:
Error: ORA 920
Text: invalid relational operator
Cause: A search condition was entered with an invalid or missing relational
operator.
Action: Include a valid relational operator such as =, !=, ^=, <>, >, <, >=, <=
, ALL, ANY, [NOT] BETWEEN, EXISTS, [NOT] IN, IS [NOT] NULL, or [NOT]
LIKE in the condition.
Obviously this refers to the invalid statement 'SELECT FROM DUAL ...'. I also recommend, you should contact Oracle Support, because it happens inside an Oracle provided package.
Werner