impdp user/password directory=DIR dumpfile=data.dmp logfile=imp.log EXCLUDE=STATISTICS Use code with caution. Solution 3: Filter System Schemas
, it typically points to a failure during the initialization phase of a Data Pump Import ( The Anatomy of the Error
is a generic internal error in Oracle Data Pump that typically indicates an unhandled exception within a worker process. The specific code impdp user/password directory=DIR dumpfile=data
If migrating between different OS types or major versions (e.g., 11g Windows to 12c Linux), avoid importing all schemas at once. Explicitly include only your application schemas and exclude system schemas: EXCLUDE=SCHEMA:"IN ('SYSMAN', 'XDB', 'WMSYS')" .
Oracle Data Pump is a cornerstone utility for database administrators, enabling high-speed movement of data and metadata between Oracle databases. Its reliability is generally exceptional, but encountering an error such as can be a perplexing and frustrating experience. This essay explores the nature of this error, its typical causes, and the systematic approach required to resolve it. Unlike syntax errors or permission denials, this error signals an internal inconsistency within the Data Pump worker process, demanding a deeper diagnostic strategy. Explicitly include only your application schemas and exclude
: While less common for code [71] , an empty or incorrectly configured default temporary tablespace can trigger ORA-39126. Recommended Resolutions 1. Rebuild Data Pump Catalog
This comprehensive technical guide breaks down why this crash happens and provides actionable steps to fix it. 🔍 Root Causes of the Error This essay explores the nature of this error,
Note : You will need to manually transfer the table structure (DDL) separately or ensure the target tables already exist.
Sometimes reducing or increasing PARALLEL helps:
Attempting to import system-related schemas (like SYSMAN ) across different Oracle versions (e.g., 11g to 12c) often triggers internal preparation errors. Troubleshooting and Resolution Steps 1. Rebuild Data Pump Metadata
Now came the moment of truth. You can't just "resume" a dead worker. He had to restart the job, but thankfully, Data Pump is smart. Because he had used the REUSE_DUMPFILE parameter and the job had failed, he knew the master table would allow him to restart from a checkpoint if he attached to the job—or, more safely, simply restart the import command to let it reconcile the partial data.