ORA-7445 [kdzdcol_agg_cols_imc_generic()+24] Is Raised when Querying INMEMORY MEMCOMPRESS Table

(Doc ID 2080334.1)

Last updated on DECEMBER 24, 2015

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 12.1]
Information in this document applies to any platform.


When querying a table with INMEMORY MEMCOMPRESS attribute, an ORA-3113 error may be returned to the session, while ORA-7445 error is reported in the alert.log.

User session may show:

SELECT sum ( col1) FROM tab1 WHERE col2 = '201510'
ERROR at line 1:
ORA-03113: end-of-file on communication channel
Process ID: 8957
Session ID: 11 Serial number: 49894

The error in the alert log is like:

ORA-07445: exception encountered: core dump [kdzdcol_agg_cols_imc_generic()+24] [SIGSEGV] [ADDR:0xFFFFFFFF7FDB7C08] [PC:0x10C865838] [Stack Overflow] []

The call stack in the trace file shows functions like:

... kdzdcol_agg_cols_imc_generic kdzdcol_agg kdpProjEval kdzt_acmp_fetch kdstf11101010001101km kdsttgr qertbFetch qergiFetch qergsFetch opifch2 kpoal8 opiodr ...



Meeting all of the following conditions may trigger this error.



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