客户的Oracle10204 RAC FOR Hp数据库执行EXPDP并行导出时出现了这个错误信息。
导出报错如下：
Export: Release 10.2.0.4.0 - 64bit Production on Thursday, 12 January, 2012 6:10:00
Copyright (c) 2003, 2007, Oracle. All rights reserved.
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, Oracle Label Security, Data Mining
and Real Application Testing options
Starting "SYSTEM"."SYS_EXPORT_SCHEMA_01": parfile=/home/oracle/backup/moddb_par_mesadmin
Estimate in progress using BLOCKS method...
Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
Total estimation using BLOCKS method: 72.74 GB
Processing object type SCHEMA_EXPORT/USER
Processing object type SCHEMA_EXPORT/SYSTEM_GRANT
Processing object type SCHEMA_EXPORT/ROLE_GRANT
Processing object type SCHEMA_EXPORT/DEFAULT_ROLE
Processing object type SCHEMA_EXPORT/TABLESPACE_QUOTA
Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA
.
.
.
Processing object type SCHEMA_EXPORT/TABLE/CONSTRAINT/REF_CONSTRAINT
Processing object type SCHEMA_EXPORT/TABLE/TRIGGER
ORA-31693: Table data object "MESADMIN"."S_IFCPRODUCT" failed to load/unload and is being skipped due to error:
ORA-29913: error in executing ODCIEXTTABLEPOPULATE callout
ORA-31617: unable to open dump file "/archive/temp_exp/moddb_exp_mesadmin_3.dmp" for wr
Processing object type SCHEMA_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS
ORA-31693: Table data object "MESADMIN"."PRODUCTHISTORY" failed to load/unload and is being skipped due to error:
ORA-29913: error in executing ODCIEXTTABLEPOPULATE callout
ORA-31617: unable to open dump file "/archive/temp_exp/moddb_exp_mesadmin_2.dmp" for wr
Processing object type SCHEMA_EXPORT/JOB
Processing object type SCHEMA_EXPORT/POST_SCHEMA/PROCACT_SCHEMA
ORA-31693: Table data object "MESADMIN"."S_R_WIP" failed to load/unload and is being skipped due to error:
ORA-29913: error in executing ODCIEXTTABLEPOPULATE callout
ORA-31617: unable to open dump file "/archive/temp_exp/moddb_exp_mesadmin_2.dmp" for wr
ORA-31693: Table data object "MESADMIN"."C_FGMSIF_PANELINFO" failed to load/unload and is being skipped due to error:
ORA-29913: error in executing ODCIEXTTABLEPOPULATE callout
ORA-31617: unable to open dump file "/archive/temp_exp/moddb_exp_mesadmin_5.dmp" for wr
ORA-31693: Table data object "MESADMIN"."C_AC_PANEL_GRADE" failed to load/unload and is being skipped due to error:
ORA-29913: error in executing ODCIEXTTABLEPOPULATE callout
ORA-31617: unable to open dump file "/archive/temp_exp/moddb_exp_mesadmin_2.dmp" for wr
. . exported "MESADMIN"."S_R_MOVEMENT" 191.2 MB 2070491 rows
.
.
.
. . exported "MESADMIN"."USERPROFILEATTRIBUTEHISTORY" 0 KB 0 rows
. . exported "MESADMIN"."RTDRULETRACEHISTORY" 1.627 GB 3812462 rows
. . exported "MESADMIN"."PRODUCT" 1.057 GB 2593517 rows
Master table "SYSTEM"."SYS_EXPORT_SCHEMA_01" successfully loaded/unloaded
******************************************************************************
Dump file set for SYSTEM.SYS_EXPORT_SCHEMA_01 is:
/archive/temp_exp/moddb_exp_mesadmin_1.dmp
/archive/temp_exp/moddb_exp_mesadmin_2.dmp
/archive/temp_exp/moddb_exp_mesadmin_3.dmp
/archive/temp_exp/moddb_exp_mesadmin_4.dmp
/archive/temp_exp/moddb_exp_mesadmin_5.dmp
/archive/temp_exp/moddb_exp_mesadmin_6.dmp
/archive/temp_exp/moddb_exp_mesadmin_7.dmp
/archive/temp_exp/moddb_exp_mesadmin_8.dmp
/archive/temp_exp/moddb_exp_mesadmin_9.dmp
/archive/temp_exp/moddb_exp_mesadmin_10.dmp
Job "SYSTEM"."SYS_EXPORT_SCHEMA_01" completed with 5 error(s) at 06:22:57
数据泵的并行度设置为10，同时向10个DUMPFILE中写入数据。在写入时出现ORA-31693、ORA-29913和ORA-31617错误。
发现对于RAC环境而言，Oracle会尝试将并行导出放到两个节点上，而由于DIRECTORY是本地磁盘，且在另外一个节点上没有建立同样的目录，因此打开文件报错的信息。
那么如果想要使用RAC上的并行导出，确保相同的目录在两个节点上同时存在。如果只想在一个节点上执行数据泵的导出那么就不要使用并行方式。
