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WebTier DMS Showing Incorrect Metric Values On And BusyThreads.Value (Doc ID 2160409.1)

Last updated on FEBRUARY 11, 2019

Applies to:

Oracle HTTP Server - Version and later
Enterprise Manager Base Platform - Version and later
Oracle Fusion Middleware - Version and later
Information in this document applies to any platform.


On a standalone WebTier 12.1.3 installation the metrics obtained with the dumpMetrics WLST command shows that there is a incoherent metric value for and busyThreads.value.

Please take a look on the output:

busyThreads.value: 4173 threads
busyProcesses.value: 0 processes
numThreads.value: 256 threads
numProcesses.value: 3 processes
mpm.value: Worker 44991 threads



Checked current connections using netstat command and the output was around 252, which is not close to 44991 (
OHS was being monitored with Cloud Control and such variation on metric output triggers false alerts.

At the same time, it has been observed within the OHS logs the following:

[2016-06-23T00:10:49.0879+01:00] [OHS] [NOTIFICATION:16] [OHS-9999] [core.c] [host_id: <HOSTNAME>] [host_addr: <IP>] [pid: PID] [tid: TID [user: <USERNAME>] [VirtualHost: main] Oracle-HTTP-Server-12c/ (Unix) mod_ssl/ OtherSSL/0.0.0 mod_plsql/ configured -- resuming normal operations

[2016-06-23T00:10:51.0895+01:00] [OHS] [NOTIFICATION:16] [OHS-9999] [core.c] [host_id: <HOSTNAME>] [host_addr: <IP>] [pid: PID] [tid: TID [user: <USERNAME>] [VirtualHost: main] child pid 21567 exit signal Segmentation fault (11)


coredump was parsed with stackx tool (refer to KM <Note:362791.1>), which given the following stack:

Loaded symbols for /lib64/
Core was generated by '/<PATH TO>/wlserver/../ohs/bin/httpd.worker -k star'.
Program terminated with signal 11, Segmentation fault.
#0 0x00007f4b1e75c005 in ssl_scache_remove () from ORACLE_HOME/fmw/ohs/ohs/modules/
(gdb) (gdb) </status>
Thread 1 (Thread 0x7f4b18cfa940 (LWP 28500)):
#0 0x00007f4b1e75c005 in ssl_scache_remove () from /ORACLE_HOME/ohs/ohs/modules/
#1 0x00007f4b1e7524b7 in ssl_callback_DelSessionCacheEntry () from ORACLE_HOME/ohs/ohs/modules/
#2 0x00007f4b2511392f in nzossc_Delete () from ORACLE_HOME/ohs/lib/
#3 0x00007f4b252526af in ssl_ctx_remove_session_nolock () from ORACLE_HOME/ohs/lib/
#4 0x00007f4b25252639 in R_SSL_CTX_remove_session () from ORACLE_HOME/ohs/lib/
#5 0x00007f4b25298a6a in ssl3_send_alert () from ORACLE_HOMElib/
#6 0x00007f4b25299d5c in ssl3_read_bytes () from ORACLE_HOME/ohs/lib/
#7 0x00007f4b252579d6 in ssl3_read () from ORALCE_HOME/ohs/lib/
#8 0x00007f4b2510e6cb in nzos_Read () from ORACLE_HOME/ohs/lib/
#9 0x00007f4b1e7515a9 in ssl_io_input_read () from ORACLE_HOME/ohs/ohs/modules/
#10 0x00007f4b1e751025 in ssl_io_filter_input () from ORACLE_HOME/ohs/ohs/modules/



 None, just upgraded the WebTier to 12.1.3.


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