Call now: 252-767-6166  
Oracle Training Oracle Support Development Oracle Apps

 E-mail Us
 Oracle Articles
New Oracle Articles

 Oracle Training
 Oracle Tips

 Oracle Forum
 Class Catalog

 Remote DBA
 Oracle Tuning
 Emergency 911
 RAC Support
 Apps Support
 Oracle Support

 SQL Tuning

 Oracle UNIX
 Oracle Linux
 Remote s
 Remote plans
 Application Server

 Oracle Forms
 Oracle Portal
 App Upgrades
 SQL Server
 Oracle Concepts
 Software Support

 Remote S


 Consulting Staff
 Consulting Prices
 Help Wanted!


 Oracle Posters
 Oracle Books

 Oracle Scripts

Don Burleson Blog 







EXP-00056: ORACLE error 6502 encountered

Oracle Database Tips by Donald BurlesonDecember 10,  2015


The error "EXP-00056: ORACLE error 6502 encountered" looks like this in export log files:

EXP-00056: ORACLE error 6502 encountered
ORA-06502: PL/SQL: numeric or value error
LPX-00210: expected '<' instead of 'n'
ORA-06512: at "SYS.UTL_XML", line 0
ORA-06512: at "SYS.DBMS_METADATA_INT", line 3296
ORA-06512: at "SYS.DBMS_METADATA_INT", line 4148
ORA-06512: at "SYS.DBMS_METADATA", line 458
ORA-06512: at "SYS.DBMS_METADATA", line 1156
ORA-06512: at "SYS.DBMS_METADATA", line 1141
ORA-06512: at line 1

Sometime this error will be due to invalid packages, and the first step is to check:

      select comp_id, version, status from dba_registry;

The exp-00056 with the 6502 error happens under several circumstances:

1 - Bugs - See Oracle patch Patch 3361288, and MOSC note 334473.1. There may be missing XDB views;

select * from sys.metastylesheet;

If the stylesheet column shows "not initialized" , there is a problem, and run this to fix:

SQL> @$ORACLE_HOME/rdbms/admin/initmeta.sql

2 - Conflicting releases - The target and local databases must be on exactly the same release of Oracle.  The EXP-00056 with 6502 has happened when the target database is Oracle9i Enterprise Edition Release and local database is Oracle9i Enterprise Edition Release

3 - Using incorrect data type variables - Dave Herring noted the EXP-00056 with 6502: " started getting the same error after upgrading from to, when setting a VARCHAR2(4000) variable to output from DBMS_METADATA.GET_DDL ...  I changed the statement to do a SUBSTR(...1,4000) and that resolved it.

Get the Complete
Oracle Utility Information 

The landmark book "Advanced Oracle Utilities The Definitive Reference"  contains over 600 pages of filled with valuable information on Oracle's secret utilities. This book includes scripts and tools to hypercharge Oracle 11g performance and you can buy it for 30% off directly from the publisher.




Oracle Training at Sea
oracle dba poster

Follow us on Twitter 
Oracle performance tuning software 
Oracle Linux poster


Burleson is the American Team

Note: This Oracle documentation was created as a support and Oracle training reference for use by our DBA performance tuning consulting professionals.  Feel free to ask questions on our Oracle forum.

Verify experience! Anyone considering using the services of an Oracle support expert should independently investigate their credentials and experience, and not rely on advertisements and self-proclaimed expertise. All legitimate Oracle experts publish their Oracle qualifications.

Errata?  Oracle technology is changing and we strive to update our BC Oracle support information.  If you find an error or have a suggestion for improving our content, we would appreciate your feedback.  Just  e-mail:  

and include the URL for the page.


Burleson Consulting

The Oracle of Database Support

Oracle Performance Tuning

Remote DBA Services


Copyright © 1996 -  2020

All rights reserved by Burleson

Oracle ® is the registered trademark of Oracle Corporation.