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ORA-7445[lnxnucoptg] when Selecting Across a Dblink Over OCI (Doc ID 563343.1)

Last updated on MARCH 28, 2019

Applies to:

Oracle Database - Enterprise Edition - Version and later
Information in this document applies to any platform.
This problem can occur on any platform.


This issue was observed on Oracle on a HP Tru64 server

Two databases, for example database A and database B, are involved.
The A database has views with a database link to tables in the B database. 
A front end application sends a query to the A database to read data from the B database through the views in A. This may be done many times successfully.
However, on occasion, a core dump occurs, and when this happens, the application will not process any more queries; it must be restarted. The front end application will also return erroneous data.

The alert log may show these errors:
ORA-07445: exception encountered: core dump [unknown] [SIGSEGV] [Address not mapped to object]
[0x80D0515C4] [] []

The function stack indicates the error occurred while converting a number to a character string.

ksedmp ssexhd
lnxnucoptg lnxnucopt kpudcn2c ttcaGetPiece ttccpwg ttcfour ttcdrv nioqwa upirtrc
kpurcsc kpufch0 kpufch OCIStmtFetch2 oci8 kpnfch
opifch2 opiall0 opial7




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