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Errors in the Alert Log: ORA-7445[ktaftt()+76] (Doc ID 2415213.1)

Last updated on FEBRUARY 20, 2019

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 12.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud 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
Information in this document applies to any platform.


After logoff from WebForms sessions, sometimes a shared server crashes:

Found dead shared server 'S000'

The associated error in the alert log:

ORA-07445: exception encountered: core dump [ktaftt()+76] [SIGSEGV] [ADDR:0x7FFE8176DB98] [PC:0x1683EAC] [Address not mapped to object] []


The Call Stack Trace in the associated incident trace file shows:

sslssSynchHdlr <- sslsshandler <- __sighandler <- ktaftt <- ktafat
 <- ktuTempsoClnUp_pdcbk <- ktuTempsoClnUp <- kss_del_cb <- kssdel <- kssdch_int <- ksuxds
  <- kss_del_cb <- kssdel <- kssdch_int <- kmcdlc <- kss_del_cb <- kssdel <- kmcddsc <- opitsk
   <- opiino <- opiodr <- opirip <- opidrv <- sou2o <- opimai_real <- ssthrdmain <- main





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