ORA-07445[upduaw()+3019] on update in 18.104.22.168.0
(Doc ID 1119613.1)
Last updated on MARCH 28, 2019
Applies to:Oracle Database - Enterprise Edition - Version 22.214.171.124 to 126.96.36.199 [Release 11.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.
ORA-7445: exception encountered: core dump [upduaw()+3019] during an update statement
Alert.log shows the following on update:
ORA-7445: exception encountered: core dump [upduaw()+3019] [SIGSEGV] [ADDR:0x0] [PC:0x7DA515B] [Address not mapped to object] 
Reproduced from Application as well as SQL*Plus.
skdstdst ksedst1 ksedst dbkedDefDump ksedmp ssexhd restore_rt PGOSF520_upduaw kdusru kauupd updrow qerupFetch updaul updThreePhaseExe updexe
Tested workaround from Note 378334.1:
alter system set "_optimizer_push_pred_cost_based" = FALSE scope=memory but error persists.
Also tried to set alter session set "_unnest_subquery"=false; but problem persisted.
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