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MS-Windows: ORA-7445 On functions: ssbev_env, slzgetevar + no SGA (Doc ID 1305096.1)

Last updated on AUGUST 04, 2018

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 10.2]
Microsoft Windows (32-bit)
Microsoft Windows Itanium (64-bit)
Microsoft Windows x64 (64-bit)


On: 10gR2 versions, Internals Errors (ORA-600 & ORA-7445)

During normal database operation,
the following error occurs.

ORA-07445: exception encountered: core dump [ACCESS_VIOLATION] [unable_to_trans_pc] [PC:0x7C82A0D0] [ADDR:0x63006C] [UNABLE_TO_WRITE] []

Examination of the trace file for the ORA-7445 error shows a Call Stack similar to that below:
----- Call Stack Trace -----
EnumerateLoadedModules64 failed with error -1073741819
7C82A0D0 00000000
7C82AAA3 CALLrel 7C829FD6
7C833D47 CALL??? 00000000
77E70C22 CALL??? 00000000
_ssbev_env+40 CALL??? 00000000
_slzgetevar+233 CALLrel _ssbev_env+0
_kpummpin+385 CALLrel _slzgetevar+0 9ECF69C 4362178 19 9ECF65C 200
_kpupin+96 CALLrel _kpummpin+0 9ECF6FC 0 0 0 0 61E32980 088B4B4
_kpkipgi+83 CALLrel _kpupin+0 2 0 0 0 0 0 88B4B4
_kpkipgn+14 CALLrel _kpkipgi+0 0
_kscnfy+1334 CALLreg 00000000 7 0
_opiino+114 CALLrel _kscnfy+0 7 0
_opiodr+1286 CALLreg 00000000 3C 4 9ECFC28
_opidrv+819 CALLrel _opiodr+0 3C 4 9ECFC28 0
_sou2o+45 CALLrel _opidrv+0 3C 4 9ECFC28
_opimai_real+112 CALLrel _sou2o+0 9ECFC1C 3C 4 9ECFC28
_opimai+92 CALLrel _opimai_real+0 2 9ECFC54
_OracleThreadStart@ CALLrel _opimai+04+2023
77E64826 CALLreg 00000000

Note that the Oracle functions ssbev_env and slzgetevar are on the Call Stack.
Note also that the functions after ssbev_env are HEX rather than function names, indicating a memory corruption.

The trace file may also contain the messages:
Current SQL information unavailable - no SGA.
***** SGA not mapped *****
***** no UGA *****


There may have been changes to the MS-Windows Environment Variable settings.
Typically, PATH may have increased to > 1024 characters.


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