Oracle SQL Developer - Errors in Copying a View From One Database to Another


I'm trying to copy a view from one database to another. I'm exporting the view using 'Quick DDL > save to worksheet' to generate the script. At the top of the script i get the message:

"-- Unable to render VIEW DDL for object <view name> with DBMS_METADATA attempting internal generator."

Both the databases are identical, the view I'm trying to copy existed in both databases but was dropped in error in one of them.

When I try to run the script on my second database i get the error

Error report:

SQL Error: ORA-00604: error occurred at recursive SQL level 1
ORA-00001: unique constraint (SYS.I_COL1) violated
00604. 00000 -  "error occurred at recursive SQL level %s"
*Cause:    An error occurred while processing a recursive SQL statement
           (a statement applying to internal dictionary tables).
*Action:   If the situation described in the next error on the stack
           can be corrected, do so; otherwise contact Oracle Support.

Has anyone any idea what I might be doing wrong?

The message

-- Unable to render VIEW DDL for object with DBMS_METADATA attempting internal

gives the SQL Developer. This is due to the fact that he can not use dbms_metadata.get_ddl. If everything is fine with the privileges, most likely due to the type of error (on execute dbms_metadata.get_ddl):

 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 615
 ORA-06512: at "SYS.DBMS_METADATA", line 1221
 ORA-06512: at line 1

Try to reload the XML API:

1. enable restricted database session
2. run:
(from $ORACLE_HOME/rdbms/admin):
to remove the xml subsystem and after that: catxml
to reload it.