EM agent Generating Core Dumps After Integration with OUD/Kerberos (Doc ID 2288007.1)

Last updated on JULY 19, 2017

Applies to:

Enterprise Manager Base Platform - Version 13.1.0.0.0 and later
Information in this document applies to any platform.

Symptoms

Having a 12.1 db target configured to authenticate users both locally and with OUD though Kerberos, as soon as the Kerberos ticket expires, core dumps are generated under agent_inst/sysman/emd directory similarly to:

oracle@myhost:/u01/app/oracle/product/emagent/agent_inst/sysman/emd$ ll
.......
-rw------- 1 oracle oinstall 9809920 Mar 10 10:21 core.10260
-rw------- 1 oracle oinstall 11825152 Mar 10 10:22 core.10860
-rw------- 1 oracle oinstall 9809920 Mar 10 10:26 core.12030
-rw------- 1 oracle oinstall 9809920 Mar 10 10:31 core.13054
-rw------- 1 oracle oinstall 9412608 Mar 10 10:33 core.14352
-rw------- 1 oracle oinstall 9412608 Mar 10 10:33 core.14383
-rw------- 1 oracle oinstall 9412608 Mar 10 10:33 core.14405
-rw------- 1 oracle oinstall 9445376 Mar 10 10:33 core.14449

The stack trace for the core dumps will show:

Program terminated with signal 11, Segmentation fault.
#0 0x00007ffff707723b in raise () from /lib64/libpthread.so.0
Missing separate debuginfos, use: debuginfo-install
glibc-2.17-157.el7_3.1.x86_64 libaio-0.3.109-13.el7.x86_64
libgcc-4.8.5-11.el7.x86_64 nss-softokn-freebl-3.16.2.3-14.4.el7.x86_64
numactl-libs-2.0.9-6.el7_2.x86_64
(gdb) bt
#0 0x00007ffff707723b in raise () from /lib64/libpthread.so.0
#1 0x00007fffee6d56c6 in skgesigOSCrash ()
from /u01/app/oracle/product/emagent/agent_13.1.0.0.0/instantclient/libclntsh.so.1
1.1
#2 0x00007fffee986f79 in kpeDbgSignalHandler ()
....
#11 0x00007fffedf7d068 in nauk5agtgt_from_cache ()
from /u01/app/oracle/product/emagent/agent_13.1.0.0.0/instantclient/libclntsh.so.1
1.1
#12 0x00007fffedf7be19 in nauk5a2sendcreds ()
from /u01/app/oracle/product/emagent/agent_13.1.0.0.0/instantclient/libclntsh.so.1
1.1
#13 0x00007fffedf74af9 in nauk5aauthent ()
from /u01/app/oracle/product/emagent/agent_13.1.0.0.0/instantclient/libclntsh.so.1

Cause

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