Data Pump Network Link Import from 11.2 to 12c Fails with ORA-39126 ORA-06502 ORA-06512 when Using High Parallelism
Last updated on MARCH 21, 2016
Applies to:Oracle Database - Standard Edition - Version 18.104.22.168 to 22.214.171.124 [Release 12.1]
Information in this document applies to any platform.
You are performing a data pump import (impdp) using a NETWORK_LINK and when specifying PARALLEL = n+1 where "n" is the number of workers, it terminates with the following errors:
ORA-39126: Worker unexpected fatal error in KUPW$WORKER.MAIN [SELECT UNIQUE object_type FROM sys.ku$_oracle_supplied_obj_view]
ORA-06502: PL/SQL: numeric or value error: character string buffer too small
ORA-06512: at "SYS.DBMS_SYS_ERROR", line 95
ORA-06512: at "SYS.KUPW$WORKER", line 11259
Setting PARALLEL=n (for example 64), it works without issue.
For example: if n=64 then 64+1 = 65 workers fails with the above error during a datapump network link import operation
The database has just been upgraded to 12c. This was not an issue in previous version.
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