Datapump network import from 10g to 11g database is not progressing

Question

We have an 11.2.0.3 shell database in RedHat Linux 5 64-bit platform, and we are pulling data from its 10g database (10.2.0.4) HP-UX platform using datapump via NETWORK_LINK. However, the import seems to be not progressing and completing. We have left it run for almost 13 hours and did not even import a single row to the 11g database. We even try to import only one table with 0 rows but still it is not completing, the logfile just continue to be lopping on the following:
Worker 1 Status:
Process Name: DW00
State: EXECUTING
Estimate in progress using BLOCKS method...
Job: IMP_NONLONG4_5
Operation: IMPORT
Mode: TABLE
State: EXECUTING
Bytes Processed: 0
Current Parallelism: 1
Job Error Count: 0
Worker 1 Status:
Process Name: DW00
State: EXECUTING
We also see this:
EVENT SECONDS_IN_WAIT STATUS STATE ACTION
SQL*Net message from dblink 4408 ACTIVE WAITING IMP_NONLONG4_5
Below is our par file:
NETWORK_LINK=DATABASE_10G
DIRECTORY=MOS_UPGRADE_DUMPLOC1
LOGFILE=imp_nonlong_grp-4_5.log
STATUS=300
CONTENT=DATA_ONLY
JOB_NAME=IMP_NONLONG4_5
TABLES=SYSADM.TEST_TBL
Any ideas? Thanks.

Answer 1

Thanks a lot for all who have looked and responded to this, I appreciate you giving time for suggestions. As a recap, datapump export and import via dumpfile works on both 10g and 11g databases, we are only having issue pulling data from the 10g database by executing datapump network import (using dblink) from the 11g database.
SOLUTION: The culprit was the parameter optimizer_features_enable='8.1.7' that is currently set on the 10g database, we have taken that out of the parameter file of the 10g database and network import worked flawlessly.
HOW DID WE FIGURE OUT: We turned on a trace to the datapump sessions and trace file shows something about optimizer (see below). So we have taken one by one any parameter that has something to do with optimizer and found out it was optimizer_features_enable='8.1.7' parameter that when removed makes the network import successful.
SELECT /* OPT_DYN_SAMP */ /*+ ALL_ROWS opt_param('parallel_execution_enabled',
'false') NO_PARALLEL(SAMPLESUB) NO_PARALLEL_INDEX(SAMPLESUB) NO_SQL_TUNE
*/ NVL(SUM(C1),0), NVL(SUM(C2),0), NVL(SUM(C3),0)
FROM
(SELECT /*+ NO_PARALLEL("SYS_IMPORT_TABLE_02") INDEX("SYS_IMPORT_TABLE_02"
SYS_C00638241) NO_PARALLEL_INDEX("SYS_IMPORT_TABLE_02") */ 1 AS C1, 1 AS C2,
1 AS C3 FROM "DBSCHEDUSER"."SYS_IMPORT_TABLE_02" "SYS_IMPORT_TABLE_02"
WHERE "SYS_IMPORT_TABLE_02"."PROCESS_ORDER"=:B1 AND ROWNUM <= 2500)
SAMPLESUB
SELECT /* OPT_DYN_SAMP */ /*+ ALL_ROWS IGNORE_WHERE_CLAUSE
NO_PARALLEL(SAMPLESUB) opt_param('parallel_execution_enabled', 'false')
NO_PARALLEL_INDEX(SAMPLESUB) NO_SQL_TUNE */ NVL(SUM(C1),0), NVL(SUM(C2),0)
FROM
(SELECT /*+ IGNORE_WHERE_CLAUSE NO_PARALLEL("SYS_IMPORT_TABLE_02")
FULL("SYS_IMPORT_TABLE_02") NO_PARALLEL_INDEX("SYS_IMPORT_TABLE_02") */ 1
AS C1, CASE WHEN "SYS_IMPORT_TABLE_02"."PROCESS_ORDER"=:B1 THEN 1 ELSE 0
END AS C2 FROM "DBSCHEDUSER"."SYS_IMPORT_TABLE_02" "SYS_IMPORT_TABLE_02")
SAMPLESUB