High CPU Consumption Caused By Oraagent.bin on multiple database environment

(Doc ID 2385803.1)

Last updated on APRIL 12, 2018

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.2 and later
Information in this document applies to any platform.

Symptoms

With multiple database instances running of different versions ,oraagent.bin consuming high amount of CPU.

We need to identify thread of oraagent.bin which is consuming high CPU.

 

-------------------------------- lwpid : 627683 -------------------------------

0: c00000000003a230 : short() + 0x30 (/usr/lib/hpux64/librt.so.1)
1: c00000000025dba0 : __vp_yield() + 0x40 (/usr/lib/hpux64/libpthread.so.1)
2: c00000000027a700 : __spin_lock_spin() + 0x210 (/usr/lib/hpux64/libpthread.so.1)
3: c000000000268270 : pthread_mutex_init() + 0x130 (/usr/lib/hpux64/libpthread.so.1)
4: c00000000066e540 : __libc_mutex_alloc() + 0x100 (/usr/lib/hpux64/libc.so.1)
5: c000000000788130 : _HPMutexWrapper::init()() + 0x90 (/usr/lib/hpux64/libstd_v2.so.1)
6: 40000000005b3ed0 : std::basic_stringbuf<char,std::char_traits<char>,std::allocator<char> >::basic_stringbuf(int)(complete)() at /usr/local/packages/compiler_remote/ansicA.06.20_aCC.A.06.20/opt/aCC/include_std/rw/stdmutex.h:366
7: 40000000005b70e0 : std::basic_stringstream<char,std::char_traits<char>,std::allocator<char> >::basic_stringstream(int)(base)() at /usr/local/packages/compiler_remote/ansicA.06.20_aCC.A.06.20/opt/aCC/include_std/sstream:265
8: 40000000017dea00 : cls::TimerModule::Personality::handleMsgSubmit(cls::Message*)() at framework/clsTimerModule.cpp:249
9: 40000000018a85a0 : cls::ThreadModel::submitNewMsg(cls::Message*)() at framework/clsThreadModel.cpp:189
10: 4000000001a30950 : cls::M2M::processRequestMsg(cls::Message*,cls::ProcessAddress const&)() at framework/clsM2M.cpp:629
11: 4000000001a2fa10 : cls::M2M::processTasks()() at framework/clsM2M.cpp:540
12: 4000000001a5dde0 : cls::M2M::doWork()() at framework/clsM2M.cpp:2026
13: 4000000001808260 : cls::FrameworkManager::doWork()() at framework/clsFrameworkManager.cpp:357
14: 400000000159a680 : cls_agfw::Main::startAgfw()() at /usr/local/packages/compiler_remote/ansicA.06.20_aCC.A.06.20/opt/aCC/include_std/string:997
15: 4000000001585370 : char() at clsAgfwInterface.cpp:576
16: 400000000057e660 : oraagentmain(int,unsigned char**)() at clsnOraAgent.cpp:360
17: c0000000154be450 : char() at clsb.c:435
18: 400000000057ca60 : unsigned long() at s0clsnAgentMain.cpp:141
19: c00000000006fbd0 : unsigned long() + 0x50 (/usr/lib/hpux64/dld.so)

 

Cause

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