12c expdp character string buffer too small

[oracle@waipio1 WAILUA dpump]$ cat expdp.brian.texpdp.par
directory=dpump
logfile=expdp.brian.texpdp.log
dumpfile=expdp.brian.texpdp.%U.dat
logtime=all
compression=all
reuse_dumpfiles=yes
tables=
brian.texpdp
[oracle@waipio1 WAILUA dpump]$ export NLS_DATE_FORMAT='YYYY-MM-DD HH24:MI'
[oracle@waipio1 WAILUA dpump]$ expdp "'/ as sysdba'" parfile=expdp.brian.texpdp.par

Export: Release 12.1.0.1.0 - Production on Sun Sep 29 15:32:45 2013

Copyright (c) 1982, 2013, Oracle and/or its affiliates.  All rights reserved.

Connected to: Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
With the Partitioning, Automatic Storage Management, OLAP, Advanced Analytics
and Real Application Testing options

UDE-31623: operation generated ORACLE error 31623
ORA-31623: a job is not attached to this session via the specified handle
ORA-06512: at "SYS.DBMS_DATAPUMP", line 3874
ORA-06512: at "SYS.DBMS_DATAPUMP", line 5161
ORA-06512: at line 1


[oracle@waipio1 WAILUA trace]$ cat  WAILUA_dm00_16678.trc
Trace file /app/oracle/diag/rdbms/wailua/WAILUA/trace/WAILUA_dm00_16678.trc
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
With the Partitioning, Automatic Storage Management, OLAP, Advanced Analytics
and Real Application Testing options
ORACLE_HOME = /app/oracle/product/12.1.0/db_1
System name:    Linux
Node name:      waipio1
Release:        3.8.13-13.el6uek.x86_64
Version:        #1 SMP Wed Aug 21 14:28:36 PDT 2013
Machine:        x86_64
Instance name: WAILUA
Redo thread mounted by this instance: 1
Oracle process number: 39
Unix process pid: 16678, image: oracle@waipio1 (DM00)


*** 2013-09-29 15:32:46.642
*** SESSION ID:(418.77) 2013-09-29 15:32:46.642
*** CLIENT ID:() 2013-09-29 15:32:46.642
*** SERVICE NAME:(SYS$USERS) 2013-09-29 15:32:46.642
*** MODULE NAME:(Data Pump Master) 2013-09-29 15:32:46.642
*** ACTION NAME:(SYS_EXPORT_TABLE_06) 2013-09-29 15:32:46.642

KUPC: Setting remote flag for this process to FALSE
KUPP: Initialization complete for master process DM00

*** 2013-09-29 15:32:47.774
ksvp2penabled: ep->flg = 0, rpr->slv_flg = 0
ksvp2penabled: ep = 0x7f9fa0b80e30, rpr = 0x1eee90910
KUPP: Error 6502 detected in master process DM00
OPIRIP: Uncaught error 447. Error stack:
ORA-00447: fatal error in background process
ORA-31666: Master process DM00 had an unhandled exception.
ORA-06502: PL/SQL: numeric or value error: character string buffer too small
ORA-06512: at "SYS.KUPM$MCP", line 16913
ORA-06512: at "SYS.KUPM$MCP", line 16804
ORA-06512: at "SYS.KUPM$MCP", line 16599
ORA-06512: at "SYS.KUPM$MCP", line 1104
ORA-06502: PL/SQL: numeric or value error: character string buffer too small
ORA-06512: at "SYS.KUPM$MCP", line 16913
ORA-06512: at "SYS.KUPM$MCP", line 16804
ORA-06512: at "SYS.KUPM$MCP", line 16599
ORA-06512: at "SYS.KUPM$MCP", line 1622
ORA-06502: PL/SQL: numeric or value error: character string buffer too small
ORA-06512: at line 2

[oracle@waipio1 WAILUA dpump]$ export NLS_DATE_FORMAT='YYYYMMDD HH24:MI'
[oracle@waipio1 WAILUA dpump]$ expdp "'/ as sysdba'" parfile=expdp.brian.texpdp.par

Export: Release 12.1.0.1.0 - Production on Sun Sep 29 15:33:10 2013

Copyright (c) 1982, 2013, Oracle and/or its affiliates.  All rights reserved.

Connected to: Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 - 64bit Production
With the Partitioning, Automatic Storage Management, OLAP, Advanced Analytics
and Real Application Testing options
20130929 15:33 15:33:13.526: Starting "SYS"."SYS_EXPORT_TABLE_07":  "/******** AS SYSDBA" parfile=expdp.brian.texpdp.par
20130929 15:33 15:33:13.864: Estimate in progress using BLOCKS method...
20130929 15:33 15:33:14.575: Processing object type TABLE_EXPORT/TABLE/TABLE_DATA
20130929 15:33 15:33:14.595: Total estimation using BLOCKS method: 64 KB
20130929 15:33 15:33:16.697: Processing object type TABLE_EXPORT/TABLE/TABLE
20130929 15:33 15:33:17.015: Processing object type TABLE_EXPORT/TABLE/IDENTITY_COLUMN
20130929 15:33 15:33:17.357: Processing object type TABLE_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS
20130929 15:33 15:33:17.361: Processing object type TABLE_EXPORT/TABLE/STATISTICS/MARKER
20130929 15:33 15:33:31.716: . . exported "BRIAN"."TEXPDP"                            4.703 KB       1 rows
20130929 15:33 15:33:31.969: Master table "SYS"."SYS_EXPORT_TABLE_07" successfully loaded/unloaded
20130929 15:33 15:33:31.972: ******************************************************************************
20130929 15:33 15:33:31.973: Dump file set for SYS.SYS_EXPORT_TABLE_07 is:
20130929 15:33 15:33:31.975:   /home/oracle/sql/dpump/expdp.brian.texpdp.01.dat
20130929 15:33 15:33:31.977: Job "SYS"."SYS_EXPORT_TABLE_07" successfully completed at Sun Sep 29 15:33:31 2013 elapsed 0 00:00:20