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Don Burleson Blog 







Import ORA-04030 error tips

Oracle Database Tips by Donald BurlesonJuly 25, 2015

Question: I am running a Data Pump import with the impdp program and I get the PRA-04030 error thus:

impdp system/xxxx@xxxx schemas=staging

ORA-39097: Data Pump job encountered unexpected error -1423
ORA-39065: unexpected master process exception in DISPATCH
ORA-01423: error encountered while checking for extra rows in exact fetch
ORA-04030: out of process memory when trying to allocate 123404 bytes (QERHJ has h-joi,kllcqas:kllsltba)

How do I know how much RAM memory to add to remove the ORA-04030 error?

Answer:  There are many permutations of the ORA-040 error, and a complete discussion is in MOSC Note 233869.1 titled "Diagnosing and Resolving ORA-4030 errors".

To resolve a ORA-04030 error, start my querying  v$pgastat and v$pga_target_advice.

The ORA-04030 is common on older 32-bit server that cannot allocate more than 2 gigabytes of RAM.  Depending on your release of Oracle, you have several options:

  • Increase pga_aggregate_target
  • Move to multi-threaded server (a.k.a. MTS or shared servers) to provide more RAM for the PGA
  • Upgrade to a 64-bit server with more RAM.



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