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High CPU Consumption Ocssd.bin in multiple database environment (Doc ID 2385800.1)

Last updated on FEBRUARY 25, 2019

Applies to:

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
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.

Symptoms


High CPU consumption ocssd.bin with large number of database instances running on each nodes.
There is mix of database versions 12c and 11gR2.

gdb of ocssd.bin shows as ,

 

Thread 12 (system thread 6600):
#0 0xc000000000650930:0 in _poll_sys+0x30 () from /usr/lib/hpux64/libc.so.1
#1 0xc000000000664fc0:0 in poll+0xe0 () from /usr/lib/hpux64/libc.so.1
#2 0xc000000015ace050:0 in sgipcwWaitHelper+0x1b60 ()
from $GI_HOME/lib/libhasgen12.so
#3 0xc000000015acc3d0:0 in sgipcwWait+0x340 ()
from $GI_HOME/lib/libhasgen12.so
#4 0xc0000000156a4d10:0 in gipcWaitOsd+0x1e0 ()
from $GI_HOME/lib/libhasgen12.so
#5 0xc000000015695b20:0 in gipcInternalWait+0x8810 ()
from $GI_HOME/lib/libhasgen12.so
#6 0xc0000000155ea880:0 in gipcWaitF+0x1360 ()
from $GI_HOME/lib/libhasgen12.so
#7 0x40000000002407b0:0 in clssscSelect+0x100 ()
warning:
ERROR: Use the "objectdir" command to specify the search
path for objectfile libcsscld12.a(clssgmc.o).
If NOT specified will behave as a non -g compiled binary.

#8 0x40000000001b95f0:0 in clssgmProcClientReqs+0x430 ()
#9 0x40000000001b8d20:0 in clssgmclientlsnr+0xa90 ()
#10 0x400000000023cd20:0 in clssscthrdmain+0x200 ()
#11 0xc0000000002400e0:0 in __pthread_bound_body+0x1c0 ()
---Type <return> to continue, or q <return> to quit---
from /usr/lib/hpux64/libpthread.so.1

File_name :: gdb_ocssd.log

 

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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