Swapping increase
Hi All,
my DEV system is running very slow and Swap size increased.
while i run the following command for reset the buffer.
/$SYNC This resets all buffers of the application server
/$CUA This resets the CUA buffer of the application server
/$TAB This resets the TABLE buffers of the application server
/$NAM This resets the nametab buffer of the application server
i did restart the system after run above command then ST02 went to normal swap while swap is
increasing once again. I am send you ST02 status and Parameters and please have a look and
guide me.
while here window server 2003 with ECC 6.0 SR3 and oracle 10.2.
I am waiting your respons.
Regards,
jamil
STO2 StatusSystem: DEVQAS_DEV_00 Tune summary
Date + Time of Snapshot: 05.06.2009 17:29:47 Startup: 03.06.2009 08:55:27
Buffer
HitRatio %
Alloc. KB
Freesp. KB
% Free Sp.
Dir. Size
FreeDirEnt
% Free Dir
Swaps
DB Accs
Nametab (NTAB)
0
Table definition
95,85
6.799
20.000
1.341.692
1.750.297
Field definition
95,83
31.563
8.427
28,09
20.000
13.682
68,41
690.429
697.825
Short NTAB
99,27
3.625
1.871
62,37
5.000
1.190
23,80
0
3.831
Initial records
73,84
6.625
4.018
66,97
5.000
303
6,06
306.360
311.206
0
program
72,69
300.000
1.132
0,39
75.000
67.969
90,63
732.729
2.224.962
CUA
97,19
3.000
328
13,34
1.500
1.383
92,20
176.277
5.549
Screen
96,54
4.297
9
0,22
2.000
1.581
79,05
2.834
9.744
Calendar
99,93
488
365
76,36
200
49
24,50
0
151
OTR
100,00
4.096
3.375
100,00
2.000
2.000
100,00
0
0
Tables
0
Generic Key
98,50
29.297
2.542
9,16
5.000
569
11,38
985
499.486
Single record
82,98
10.000
471
4,79
500
359
71,80
172
391.479
0
Export/import
68,57
4.096
331
9,81
2.000
1.130
56,50
202.578
Exp./ Imp. SHM
91,26
4.096
3.179
94,19
2.000
1.999
99,95
0
SAP Memory
Curr.Use %
CurUse[KB]
MaxUse[KB]
In Mem[KB]
OnDisk[KB]
SAPCurCach
HitRatio %
Roll area
0,99
2.592
6.048
262.144
0
IDs
99,63
Page area
1,13
2.950
96.584
131.072
131.072
Statement
91,00
Extended memory
2,90
729.088
1.826.816
25.161.728
0
0,00
Heap memory
0
0
0
0
0,00
Call Stati
HitRatio %
ABAP/4 Req
ABAP Fails
DBTotCalls
AvTime[ms]
DBRowsAff.
Select single
90,05
4.696.725
836.510
351.994
0
3.860.215
Select
82,59
16.964.115
0
815.771
0
11.741.945
Insert
0,00
35.170
1.598
39.302
0
226.530
Update
0,00
15.252
7.933
18.947
0
12.524
Delete
0,00
27.722
22.117
33.445
0
108.091
Total
86,32
21.738.984
868.158
1.259.459
0
15.949.305
while profile parameter is:
System: DEVQAS_DEV_00 Profile Parameters for SAP Buffers
Date and Time: 05.06.2009 19:27:14
Buffer Name Comment
Profile Parameter Value Unit Comment
Program buffer PXA
abap/buffersize 300000 kB Size of program buffer
abap/pxa shared Program buffer mode
|
CUA buffer CUA
rsdb/cua/buffersize 3000 kB Size of CUA buffer
The number of max. buffered CUA objects is always: size / (2 kB)
|
Screen buffer PRES
zcsa/presentation_buffer_area 4400000 Byte Size of screen buffer
sap/bufdir_entries 2000 Max. number of buffered screens
|
Generic key table buffer TABL
zcsa/table_buffer_area 30000000 Byte Size of generic key table buffer
zcsa/db_max_buftab 5000 Max. number of buffered objects
|
Single record table buffer TABLP
rtbb/buffer_length 10000 kB Size of single record table buffer
rtbb/max_tables 500 Max. number of buffered tables
|
Export/import buffer EIBUF
rsdb/obj/buffersize 4096 kB Size of export/import buffer
rsdb/obj/max_objects 2000 Max. number of objects in the buffer
rsdb/obj/large_object_size 8192 Bytes Estimation for the size of the largest object
rsdb/obj/mutex_n 0 Number of mutexes in Export/Import buffer
|
OTR buffer OTR
rsdb/otr/buffersize_kb 4096 kB Size of OTR buffer
rsdb/otr/max_objects 2000 Max. number of objects in the buffer
rsdb/otr/mutex_n 0 Number of mutexes in OTR buffer
|
Exp/Imp SHM buffer ESM
rsdb/esm/buffersize_kb 4096 kB Size of exp/imp SHM buffer
rsdb/esm/max_objects 2000 Max. number of objects in the buffer
rsdb/esm/large_object_size 8192 Bytes Estimation for the size of the largest object
rsdb/esm/mutex_n 0 Number of mutexes in Exp/Imp SHM buffer
|
Table definition buffer TTAB
rsdb/ntab/entrycount 20000 Max. number of table definitions buffered
The size of the TTAB is nearly 100 bytes * rsdb/ntab/entrycount
|
Field description buffer FTAB
rsdb/ntab/ftabsize 30000 kB Size of field description buffer
rsdb/ntab/entrycount 20000 Max. number / 2 of table descriptions buffered
FTAB needs about 700 bytes per used entry
|
Initial record buffer IRBD
rsdb/ntab/irbdsize 6000 kB Size of initial record buffer
rsdb/ntab/entrycount 20000 Max. number / 2 of initial records buffered
IRBD needs about 300 bytes per used entry
|
Short nametab (NTAB) SNTAB
rsdb/ntab/sntabsize 3000 kB Size of short nametab
rsdb/ntab/entrycount 20000 Max. number / 2 of entries buffered
SNTAB needs about 150 bytes per used entry
|
Calendar buffer CALE
zcsa/calendar_area 500000 Byte Size of calendar buffer
zcsa/calendar_ids 200 Max. number of directory entries
|
Roll, extended and heap memory EXTM
ztta/roll_area 3000000 Byte Roll area per workprocess (total)
ztta/roll_first 1 Byte First amount of roll area used in a dialog WP
ztta/short_area 3200000 Byte Short area per workprocess
rdisp/ROLL_SHM 32768 8 kB Part of roll file in shared memory
rdisp/PG_SHM 16384 8 kB Part of paging file in shared memory
rdisp/PG_LOCAL 150 8 kB Paging buffer per workprocess
em/initial_size_MB 24574 MB Initial size of extended memory
em/blocksize_KB 4096 kB Size of one extended memory block
em/address_space_MB 4096 MB Address space reserved for ext. mem. (NT only)
ztta/roll_extension 2000000000 Byte Max. extended mem. per session (external mode)
abap/heap_area_dia 2000000000 Byte Max. heap memory for dialog workprocesses
abap/heap_area_nondia 0 Byte Max. heap memory for non-dialog workprocesses
abap/heap_area_total 25767706624 Byte Max. usable heap memory
abap/heaplimit 40000000 Byte Workprocess restart limit of heap memory
abap/use_paging 0 Paging for flat tables used (1) or not (0)
|
Statistic parameters
rsdb/staton 1 Statistic turned on (1) or off (0)
rsdb/stattime 0 Times for statistic turned on (1) or off (0)
In order to change one of the above parameters...
1) Edit your system profile F:\usr\sap\DEV\SYS\profile\DEV_DVEBMGS00_DEVQAS
(You can use the buttons Profile Maintenance or @0Z@ Profile Parameter above)
2) Activate the parameter by restarting your local SAP system
plz now guide me which parameter i have to increase..
regards,
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global memory bound 104857600 bytes
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total PGA allocated 4612293632 bytes
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total PGA used for manual workareas 0 bytes
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syncd 45402 0.7 0.5 root ClientV2 0 Press:
oracle 164312 0.3 16.5 oratst ServerV3 0 "h" for help
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Edited by: user3308982 on Jul 25, 2011 11:13 AM -
Hey,
Im using Solaris 10:
-bash-3.00$ cat /etc/release
Solaris 10 10/08 s10x_u6wos_07b X86
-bash-3.00$ uname -a
SunOS arrow 5.10 Generic_137138-09 i86pc i386 i86pcI've install the system using ZFS as the root filesystem:
bash-3.00# zfs list
NAME USED AVAIL REFER MOUNTPOINT
rpool 9.16G 20.1G 35.5K /rpool
rpool/ROOT 5.15G 20.1G 18K legacy
rpool/ROOT/s10x_u6wos_07b 5.15G 20.1G 5.15G /
rpool/dump 1.00G 20.1G 1.00G -
rpool/export 1.34G 20.1G 300M /export
rpool/export/home 1.05G 20.1G 1.05G /export/home
rpool/swap 790M 20.2G 730M -
....So my question is, is there an easy way to increase the swap space in this configuration? If so, what is the command to do that?
The docs pointed me to this: http://docs.sun.com/app/docs/doc/819-5461/gazss?a=view, but I'm uncertain what properties to change. Am I on the right track or am I embarrassingly wrong here?Be careful with changing a running system like that.. You changed the size of the pool but did you also make sure that the new swap space was initialized? iow; does "swap -l" really show more swap ? Its not the recommended way to do this, thats for sure..
So just for possible future reference..
The easiest approach (IMO) is to simply create a new swap filesystem, then tell the system to start using it, then turn off your old swapspace.. So something in the likes of...
zfs create -o volsize=2G rpool/swap2
swap -a /dev/zvol/dsk/rpool/swap2
swap -d /dev/zvol/dsk/rpool/swapAnd bingo.
Off course if you're a detail nut like myself then having a name "swap2" really won't do. So you could also simply use swap2 as temporary space and then resize your initial swap while also re-initializing the swapspace on it. I'm not too sure if that is also performed during boot.. So something like this:
zfs create -o volsize=2G rpool/swap2
swap -a /dev/zvol/dsk/rpool/swap2
swap -d /dev/zvol/dsk/rpool/swap
zfs set -o volsize=2G rpool/swap
swap -a /dev/zvol/dsk/rpool/swap
swap -d /dev/zvol/dsk/rpool/swap2Ofcourse all of this will put a little load on the disks, and if you're going to reboot anyway then it might make more sense to use a rescue cd of some sort and perform the change manually. However, I'd still advice you to double check since I'm not too sure about swap space getting re-initialized during boot. All the docs I've found regarding this subject all speak of re-creating the swap space itself as well.
Edit: And if you'd be a ZFS nut unlike myself you'd realize that its also perfectly possible to rename a dataset. So instead of creating a new dataset and moving the swap again it would be sufficient to simply rename it from swap2 to swap again. IMO this is really the easiest and safest way to resize swap. And it doesn't even require a reboot! -
Can I increase swap size by just adding a swap file for permanent?
Hello,
I am doing installation of oracle 11gR2 database on Linux.
the swap area size is not enough. so can't go thought OUI's pre-system check before installation.
the system administrator says, he really feel hard to find out any free uppartitioned disk space for adding more to current swap.
he wants me to see if he can add a swap file (rather than an entire device/partition) for swap space.
I checked docs:
How to Create a Swap Device on Enterprise Linux [ID 432991.1]
it says,
"If no free, unpartitioned disk space exists, a swap file (rather than an entire device/partition) can be used for swap space as a *temporary*"
but why temporary? why not permanent (I don't want to have trouble in future) is there anyone can help me to confirm?
Thank you very much in advance.995137 wrote:
HI Osama,
thank you for answering.
To my understanding, there should be no harm for database in future, f we increase swap size by adding a swap file, right?
many thanks !!!Right!
add another swap file -
Prime Infrastructure v2 - want to increase Swap space
Hello,
How can we increase Swap space at Prime Infrastructure v2.x? Do we keep TAC support? Will the installations with increased swapspace be still upgradeable?
We monitor customer systems and there are CPI's as well via CA Spectrum. Some of them get into our attentention with Swap-Space alerts indicating to us we need to increase its Swapspace to improve the performance of the CPI's in question.
thx for hints, SteffenYes Terry
I did, but when iam restarting system at the time of initialization that is showing swapon: no such device or address [Failed]
why
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