Debug error: Errors while executing step

Question

Hi gurus:
While debugging a complex mapping, I received the following error.
DEPENDENCY: EXPR executing...
Errors while executing step
DEBUG INPUT ROW: 1
TABLE: DBG$ID2_MTL_SYSTEM_ITEM_B_GR
STATEMENT: TRACE177:TRACE180:
"GE_8_SY"
("DBG$ID2_MTL_SYSTEM_ITEM_B_GR_I$1"):=
""DW_PG".GET_COURSE("MT_1_IN$2"
("DBG$ID2_MTL_SYSTEM_ITEM_B_GR_I$1"), "MT_2_OR$2"
("DBG$ID2_MTL_SYSTEM_ITEM_B_GR_I$1"), 'CATEGORIES', 5)/*ATTRIBUTE EXPR.OUTGRP1.ID2:EXPRESSION*/;
ORA-29280: invalid directory path
ORA-06512: at "SYS.UTL_FILE", line 41
ORA-06512: at "SYS.UTL_FILE", line 478
ORA-06512: at "DW_PKG", line 377
ORA-06512: at "DW_PKG", line 3424
ORA-01403: no data found
As a background, the error occurred at EXPR step which is calling a function. Function calls additional tables in the source schema (tables not brought into Staging) I have imported the Package from the DB (Target) Do I need to do something special for the function to be able to access the tables in the source schema?
Thanks in advance for your help.

Answer 1

I ran into a similar problem about a year ago.  Very random, but kept happening at least once a week.  Finally figured out that the static IP address for our server was left in the dynamic IP address pool.  So every so often, the address was dynamically assigned to a second machine.  Which caused a similar type of problem that you are seeing.  I don't know if this is your problem.  But it sounds familiar.
Hope it helps.
Mike