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Software > Lotus > |
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Domino Server hangs with error "Unable to create Server task: Insufficient memory - server executive pool is full"
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| | | | Problem | | Your Lotus Domino server hangs intermittently at a rate of about once every 2-3 days after seeing the following error on the Domino Server console:
"Unable to create Server task: Insufficient memory - server executive pool is full"
| | | | Symptom |
An initial NSD will show the following memory usage for shared memory:
<@@ ------ Notes Memory -> Usage Summary -> Top 10 Memory Block Usage ->
16 bit Handles By Size :: (Shared) (Time 07:29:57) ------ @@>
Type TotalSize Count Typename
-----------------------------------------------------------
0x890b 134283242 2053 BLK_EXECPOOL
0x0a0a 4511458 138 ???
0x824b 3612320 60 BLK_OPENED_NOTE
0x8291 3466414 53 BLK_NSF_FOLDERPOOL
0x8a01 3139530 48 BLK_NETPOOL
0x8001 2229704 1549 ???
0x892e 1975000 1 BLK_TASK_TABLE
0x826c 1242676 19 BLK_EXTMGR
0x8141 1111868 17 BLK_STATICPOOL
0x8405 1089836 1862 BLK_IDTABLE
Notice that BLK_EXEC_POOL is at its limit of 128 MB and 2053 handles.
From the memory dumps, one sees that this block increased roughly at a rate of 3 million bytes per hour after a server restart.
This also occurs on Linux. This is an example of a Linux stack exhibiting this error:
Thread 190 (Thread 4002020256 (LWP 4420)):
#0 0xffffe405 in __kernel_vsyscall ()
#1 0xf61c4101 in __gxx_personality_v0 () from /lib/libc.so.6
#2 0xf64d0cbc in FRDoSleep ()
from /domino/lotus/notes/latest/linux/libnotes.so
#3 0xf64d1eb0 in OSRunExternalScript ()
from /domino/lotus/notes/latest/linux/libnotes.so
#4 0xf64d34ca in OSFaultCleanupExt ()
from /domino/lotus/notes/latest/linux/libnotes.so
#5 0xf64d35b4 in OSFaultCleanup ()
from /domino/lotus/notes/latest/linux/libnotes.so
#6 0xf64a4030 in fatal_error ()
from /domino/lotus/notes/latest/linux/libnotes.so
#7 <signal handler called>
#8 0xffffe405 in __kernel_vsyscall ()
#9 0xf635bfc1 in raise () from /lib/libpthread.so.0
#10 0xf64ec323 in Panic () from /domino/lotus/notes/latest/linux/libnotes.so
#11 0xf6521a9d in OSVBlockAddr ()
from /domino/lotus/notes/latest/linux/libnotes.so
#12 0x080caee7 in DequeueOpenCollection ()
#13 0x080a9daf in ServerCloseCollection ()
#14 0x080ab369 in ServerMiscFunction ()
#15 0x0809ab0b in DbServer ()
#16 0x080bb9c8 in WorkThreadTask ()
#17 0x0806f058 in Scheduler ()
#18 0xf64c8ec2 in ThreadWrapper ()
from /domino/lotus/notes/latest/linux/libnotes.so
#19 0xf63542ab in start_thread () from /lib/libpthread.so.0
#20 0xf61caa4e in clone () from /lib/libc.so.6 | | |  | | | Cause | | Investigated by the development team, this error was proven to be a memory leak. | | | | | Resolving the problem | | This issue is now fixed in Lotus Notes and Domino 8.0.2 FP2, 8.5 FP1 and 8.5.1.
Fix details: SPR#TLAM7NGJXY
Refer to the Upgrade Central site for details on upgrading Notes/Domino.
For immediate relief, restart the Domino server.
If the server is unresponsive to server commands, issue the "NSD -kill" command and start the server back up to recycle the BLK_EXECPOOL memory block.
If you have not yet upgraded, as a workaround, you may add enable_collection_clean_queue=0 to the notes.ini. Then restart the Domino server. | | | | | | | | |
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| Product categories: |
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| | Software | |
| | Messaging Applications | |
| | Advanced Messaging | |
| | Lotus Domino | |
| | Lotus Domino Server | |
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| Operating system(s): |
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AIX, IBM i, Linux, Solaris, Windows
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| Software version: |
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8.0, 8.5
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| Software edition: |
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All Editions
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| Reference #: |
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1376091
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| IBM Group: |
| | Software Group |
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| Modified date: |
| | 2009-10-11 |
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