Today, we were encountered with this internal error on One of our test environment.

On Our Database ,we have 2 temporary table-spaces with a Temporary table space group.
While we are performing Data pump Import (IMPDP) into another machine , The job was failed multiple times with following error on screen ….
Screen Error :

Processing object type DATABASE_EXPORT/SCHEMA/TYPE/TYPE_SPEC
ORA-39014: One or more workers have prematurely exited.
ORA-39029: worker 1 with process name “DW01” prematurely terminated
ORA-31672: Worker process DW01 died unexpectedly.

When I verified for the cause, on alert log,  found an Internal error only after Temporary tablespace creation ..

Alert log Content :

CREATE TEMPORARY TABLESPACE “TEMP_TWO” TEMPFILE ‘/u01/app/oracle/oracle/product/10.2.0/oradata/*****/temp02.dbf’SIZE 844103680 AUTOEXTEND ON NEXT 8192 MAXSIZE 32767M TABLESPACE GROUP TBS_GROUP EXTENT MANAGEMENT LOCAL UNIFORM SIZE 1048576

ORA-1119 signalled during CREATE TEMPORARY TABLESPACE “TEMP_TWO” TEMPFILE ‘/u01/app/oracle/oracle/product/10.2.0/oradata/********/temp02.dbf’ SIZE 844103680 AUTOEXTEND ON NEXT 8192 MAXSIZE 32767M TABLESPACE GROUP TBS_GROUP EXTENT MANAGEMENT LOCAL UNIFORM SIZE 1048576 …

Sun Feb 17 13:18:26 PST 2013

Thread 1 advanced to log sequence 47 (LGWR switch)

Current log# 2 seq# 47 mem# 0: /u01/app/oracle/*****/*****/redo02.log

Sun Feb 17 13:18:32 PST 2013
Errors in file /u01/app/oracle/******/admin/******/bdump/*****_dw01_24538.trc:

ORA-07445: exception encountered: core dump [kttuser0()+272] [SIGFPE] [Integer divide by zero] [0x8949718] [] []

Creating the temp tablespaces manually before IMPDP process will avoid such errors.

For More info please read metalink document ID 1259393.1