Shared pool size
Hi All,
DB:oracle9iR2
os:solaris
how to get the shared_pool usage,free total size and hit ratio in oracle 9i R2?,can any one help to me....
POOL BYTES MB
shared pool used :
shared pool free :
shared pool (Total):
=================
Shared_pool hit ratio:
thanks.
Hi All,
thank you for all the responses..
Db:oracle 9iR2
os :solaris
Actually i am facing below problem..
prob: ORA-00604: error occurred at recursive SQL level 2
ORA-04031: unable to allocate 4224 bytes of shared memory ("shared pool","select obj#,type#,ctime,mtim...","sga heap(1,0)","library ca
che")
Wed Feb 8 19:33:43 2012
Errors in file /ora/admin/cddp/bdump/cddp_cjq0_2601.trc:
ORA-00604: error occurred at recursive SQL level 2
ORA-04031: unable to allocate 4224 bytes of shared memory ("shared pool","select obj#,type#,ctime,mtim...","sga heap(1,0)","library ca
che")
Wed Feb 8 19:33:43 2012
Errors in file /ora/admin/cddp/bdump/cddp_cjq0_2601.trc:
ORA-00604: error occurred at recursive SQL level 2
ORA-04031: unable to allocate 4224 bytes of shared memory ("shared pool","select obj#,type#,ctime,mtim...","sga heap(1,0)","library ca
che")
Wed Feb 8 19:33:48 2012
Errors in file /ora/admin/cddp/bdump/cddp_cjq0_2601.trc:
ORA-00604: error occurred at recursive SQL level 2
ORA-04031: unable to allocate 4224 bytes of shared memory ("shared pool","select obj#,type#,ctime,mtim...","sga heap(1,0)","library ca
che")
========================================
i was running with 200MB size of share pool....couple of days back un expectdly i got above error....for temparory solution i did shared pool flush...
again nexday same error got repeated....for that i increased shared pool size to 420 MB....
while monitoring db it is using shared pool memory up to 400MB with avg shared pool hit ratio of 94.5 %..(database started recently)...
Earlier shared_pool size:200MB
Now:420 MB
Avg usage:up to 400MB
my question is :
1)if we have many different sql statements in shared pool ..won't
oracle flush share pool (ie aged out based on LRU or some alogorithm) if any program need memory in shared pool?
2) Any data Fragmentation will cause@above error?
3)can any one please explain..... how to check whats going on in Shared_pool(internally)...why it is using 400MB while compare to erlier avg usage 170MB .....any idea...(how to find root cause)..?
4)will plan table cause any issue ?
can any one explain to me...
thanks..
Edited by: kk001 on Feb 11, 2012 4:54 PM
Edited by: kk001 on Feb 11, 2012 4:56 PM
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End Snap: 6558 27-Nov-11 17:00:17 130 1.6
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Begin End
Buffer Cache: 40,960M 40,960M Std Block Size: 8K
Shared Pool Size: 4,096M 4,096M Log Buffer: 25,908K
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DB CPU(s): 0.5 1.2 0.00 0.06
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2.2 63.6 0.0
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% Host Mem used for SGA+PGA: 39.30 39.70
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Begin End
Number of Instances: 2 2
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Avg global cache cr block send time (ms): 0.0
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Begin End
Interface IP Address Pub Source IP Pub Src
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Main Report
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Back to Top
Statistic Name Time (s) % of DB Time
sql execute elapsed time 1,925.20 94.38
DB CPU 1,789.38 87.72
connection management call elapsed time 99.65 4.89
PL/SQL execution elapsed time 89.81 4.40
parse time elapsed 46.32 2.27
hard parse elapsed time 25.01 1.23
Java execution elapsed time 21.24 1.04
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failed parse elapsed time 9.37 0.46
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sequence load elapsed time 0.06 0.00
repeated bind elapsed time 0.02 0.00
hard parse (bind mismatch) elapsed time 0.01 0.00
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background elapsed time 122.00
background cpu time 113.42
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NUM_LCPUS 0
NUM_VCPUS 0
AVG_BUSY_TIME 12,339
AVG_IDLE_TIME 348,838
AVG_IOWAIT_TIME 221
AVG_SYS_TIME 2,274
AVG_USER_TIME 9,944
BUSY_TIME 299,090
IDLE_TIME 8,375,051
IOWAIT_TIME 6,820
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USER_TIME 241,578
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OS_CPU_WAIT_TIME 312,200
PHYSICAL_MEMORY_BYTES 137,438,953,472
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NUM_CPU_CORES 12
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GLOBAL_SEND_SIZE_MAX 1,310,720
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TCP_RECEIVE_SIZE_MIN 4,096
TCP_SEND_SIZE_DEFAULT 16,384
TCP_SEND_SIZE_MAX 9,223,372,036,854,775,807
TCP_SEND_SIZE_MIN 4,096
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Operating System Statistics - Detail
Snap Time Load %busy %user %sys %idle %iowait
27-Nov 16:00:06 0.58
27-Nov 17:00:17 1.50 3.45 2.79 0.66 96.55 0.08
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Foreground Wait Class
* s - second, ms - millisecond - 1000th of a second
* ordered by wait time desc, waits desc
* %Timeouts: value of 0 indicates value was < .5%. Value of null is truly 0
* Captured Time accounts for 95.7% of Total DB time 2,039.77 (s)
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DB CPU 1,789 87.72
User I/O 61,229 0 92 1 4.49
Other 102,743 40 31 0 1.50
Concurrency 3,169 10 24 7 1.16
Cluster 58,920 0 11 0 0.52
System I/O 45,407 0 6 0 0.29
Configuration 107 7 1 5 0.03
Commit 383 0 0 1 0.01
Network 15,275 0 0 0 0.00
Application 52 8 0 0 0.00
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Foreground Wait Events
* s - second, ms - millisecond - 1000th of a second
* Only events with Total Wait Time (s) >= .001 are shown
* ordered by wait time desc, waits desc (idle events last)
* %Timeouts: value of 0 indicates value was < .5%. Value of null is truly 0
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db file sequential read 27,531 0 50 2 18.93 2.45
db file scattered read 26,322 0 30 1 18.10 1.47
row cache lock 1,798 0 20 11 1.24 0.96
OJVM: Generic 36 42 15 421 0.02 0.74
db file parallel read 394 0 7 19 0.27 0.36
control file sequential read 22,248 0 6 0 15.30 0.28
reliable message 4,439 0 4 1 3.05 0.18
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gc cr grant 2-way 5,151 0 1 0 3.54 0.06
direct path read temp 1,722 0 1 1 1.18 0.05
gc current block 2-way 1,807 0 1 0 1.24 0.03
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name-service call wait 12 0 1 47 0.01 0.03
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gc current multi block request 1,206 0 0 0 0.83 0.01
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enq: FB - contention 131 0 0 0 0.09 0.00
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CSS initialization 8 0 0 6 0.01 0.00
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CSS operation: action 8 0 0 4 0.01 0.00
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latch free 30 0 0 1 0.02 0.00
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SQL*Net more data to client 666 0 0 0 0.46 0.00
asynch descriptor resize 3,179 100 0 0 2.19 0.00
latch: shared pool 3 0 0 3 0.00 0.00
CSS operation: query 24 0 0 0 0.02 0.00
PX Deq: Signal ACK EXT 72 0 0 0 0.05 0.00
KJC: Wait for msg sends to complete 269 0 0 0 0.19 0.00
latch: object queue header operation 4 0 0 1 0.00 0.00
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utl_file I/O 11 0 0 0 0.01 0.00
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PX Deq: Execute Reply 2,946 31 27 9 2.03
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PX Deq: Join ACK 2,976 28 2 1 2.05
PX Deq Credit: send blkd 7 14 0 4 0.00
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Background Wait Events
* ordered by wait time desc, waits desc (idle events last)
* Only events with Total Wait Time (s) >= .001 are shown
* %Timeouts: value of 0 indicates value was < .5%. Value of null is truly 0
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db file parallel write 8,233 0 6 1 5.66 5.08
log file parallel write 3,906 0 6 1 2.69 4.62
log file sequential read 350 0 5 16 0.24 4.49
control file sequential read 13,737 0 5 0 9.45 3.72
DFS lock handle 2,990 27 2 1 2.06 1.43
db file sequential read 921 0 2 2 0.63 1.39
SQL*Net break/reset to client 18 0 1 81 0.01 1.19
control file parallel write 2,455 0 1 1 1.69 1.12
ges lms sync during dynamic remastering and reconfig 24 100 1 50 0.02 0.98
library cache load lock 35 0 1 24 0.02 0.68
ASM file metadata operation 3,483 0 1 0 2.40 0.65
enq: CO - master slave det 1,203 100 1 0 0.83 0.46
kjbdrmcvtq lmon drm quiesce: ping completion 9 0 1 62 0.01 0.46
enq: WF - contention 11 0 0 35 0.01 0.31
CGS wait for IPC msg 32,702 100 0 0 22.49 0.19
gc object scan 28,788 100 0 0 19.80 0.15
row cache lock 535 0 0 0 0.37 0.14
library cache pin 370 55 0 0 0.25 0.12
ksxr poll remote instances 19,119 100 0 0 13.15 0.11
name-service call wait 6 0 0 19 0.00 0.10
gc current block 2-way 304 0 0 0 0.21 0.09
gc cr block 2-way 267 0 0 0 0.18 0.08
gc cr grant 2-way 355 0 0 0 0.24 0.08
ges LMON to get to FTDONE 3 100 0 24 0.00 0.06
enq: CF - contention 145 76 0 0 0.10 0.05
PX Deq: reap credit 8,842 100 0 0 6.08 0.05
reliable message 126 0 0 0 0.09 0.05
db file scattered read 19 0 0 3 0.01 0.05
library cache lock 162 1 0 0 0.11 0.04
latch: shared pool 2 0 0 27 0.00 0.04
Disk file operations I/O 504 0 0 0 0.35 0.04
gc current grant busy 148 0 0 0 0.10 0.04
gcs log flush sync 84 0 0 1 0.06 0.04
ges message buffer allocation 24,934 0 0 0 17.15 0.02
enq: CR - block range reuse ckpt 83 0 0 0 0.06 0.02
latch free 22 0 0 1 0.02 0.02
CSS operation: action 13 0 0 2 0.01 0.02
CSS initialization 4 0 0 6 0.00 0.02
direct path read 1 0 0 21 0.00 0.02
rdbms ipc reply 153 0 0 0 0.11 0.01
db file parallel read 2 0 0 8 0.00 0.01
direct path write 5 0 0 3 0.00 0.01
gc current multi block request 49 0 0 0 0.03 0.01
gc current block busy 5 0 0 2 0.00 0.01
enq: PS - contention 24 50 0 0 0.02 0.01
gc cr multi block request 54 0 0 0 0.04 0.01
ges generic event 1 100 0 10 0.00 0.01
gc current grant 2-way 35 0 0 0 0.02 0.01
kfk: async disk IO 183 0 0 0 0.13 0.01
Log archive I/O 3 0 0 2 0.00 0.01
gc buffer busy acquire 2 0 0 3 0.00 0.00
LGWR wait for redo copy 123 0 0 0 0.08 0.00
IPC send completion sync 18 0 0 0 0.01 0.00
enq: TA - contention 11 0 0 0 0.01 0.00
read by other session 2 0 0 2 0.00 0.00
enq: TM - contention 9 89 0 0 0.01 0.00
latch: ges resource hash list 135 0 0 0 0.09 0.00
PX Deq: Slave Session Stats 12 0 0 0 0.01 0.00
KJC: Wait for msg sends to complete 89 0 0 0 0.06 0.00
enq: TD - KTF dump entries 8 0 0 0 0.01 0.00
enq: US - contention 7 0 0 0 0.00 0.00
CSS operation: query 12 0 0 0 0.01 0.00
enq: TK - Auto Task Serialization 6 100 0 0 0.00 0.00
PX Deq: Signal ACK RSG 24 50 0 0 0.02 0.00
log file single write 6 0 0 0 0.00 0.00
enq: WL - contention 2 100 0 1 0.00 0.00
ADR block file read 13 0 0 0 0.01 0.00
ADR block file write 5 0 0 0 0.00 0.00
latch: object queue header operation 1 0 0 1 0.00 0.00
gc cr block busy 1 0 0 1 0.00 0.00
rdbms ipc message 103,276 67 126,259 1223 71.03
PX Idle Wait 6,467 67 12,719 1967 4.45
wait for unread message on broadcast channel 7,240 100 7,221 997 4.98
gcs remote message 218,809 84 7,213 33 150.49
DIAG idle wait 203,228 95 7,185 35 139.77
shared server idle wait 121 100 3,630 30000 0.08
ASM background timer 3,343 0 3,611 1080 2.30
Space Manager: slave idle wait 723 100 3,610 4993 0.50
heartbeat monitor sleep 722 100 3,610 5000 0.50
ges remote message 73,089 52 3,609 49 50.27
dispatcher timer 66 88 3,608 54660 0.05
pmon timer 1,474 82 3,607 2447 1.01
PING 1,487 19 3,607 2426 1.02
Streams AQ: qmn slave idle wait 125 0 3,594 28754 0.09
Streams AQ: qmn coordinator idle wait 250 50 3,594 14377 0.17
smon timer 18 50 3,505 194740 0.01
JOX Jit Process Sleep 73 100 976 13370 0.05
class slave wait 56 0 605 10806 0.04
KSV master wait 2,215 98 1 0 1.52
SQL*Net message from client 109 0 0 2 0.07
PX Deq: Parse Reply 27 44 0 1 0.02
PX Deq: Join ACK 30 40 0 1 0.02
PX Deq: Execute Reply 20 30 0 0 0.01
Streams AQ: RAC qmn coordinator idle wait 259 100 0 0 0.18
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Wait Event Histogram
* Units for Total Waits column: K is 1000, M is 1000000, G is 1000000000
* % of Waits: value of .0 indicates value was <.05%; value of null is truly 0
* % of Waits: column heading of <=1s is truly <1024ms, >1s is truly >=1024ms
* Ordered by Event (idle events last)
% of Waits
Event Total Waits <1ms <2ms <4ms <8ms <16ms <32ms <=1s >1s
ADR block file read 13 100.0
ADR block file write 5 100.0
ADR file lock 6 100.0
ARCH wait for archivelog lock 3 100.0
ASM file metadata operation 3483 99.6 .1 .1 .2
CGS wait for IPC msg 32.7K 100.0
CSS initialization 12 50.0 50.0
CSS operation: action 21 28.6 9.5 61.9
CSS operation: query 36 86.1 5.6 8.3
DFS lock handle 6198 98.6 1.2 .1 .1
Disk file operations I/O 909 95.7 3.6 .7
IPC send completion sync 5469 99.9 .1 .0 .0
KJC: Wait for msg sends to complete 313 100.0
LGWR wait for redo copy 122 100.0
Log archive I/O 3 66.7 33.3
OJVM: Generic 36 55.6 44.4
PX Deq: Signal ACK EXT 72 98.6 1.4
PX Deq: Signal ACK RSG 2070 99.7 .0 .1 .0 .1
PX Deq: Slave Session Stats 2673 99.7 .2 .1 .0
PX Deq: reap credit 44.7K 100.0
SQL*Net break/reset to client 20 95.0 5.0
SQL*Net message to client 14.7K 100.0
SQL*Net more data from client 32 100.0
SQL*Net more data to client 689 100.0
asynch descriptor resize 3387 100.0
buffer busy waits 2 100.0
control file parallel write 2455 96.6 2.2 .6 .6 .1
control file sequential read 36K 99.4 .3 .1 .1 .1 .1 .0
db file parallel read 397 8.8 .8 5.5 12.6 17.4 46.3 8.6
db file parallel write 8233 85.4 10.3 2.3 1.4 .4 .1
db file scattered read 26.3K 79.2 1.5 8.2 10.5 .6 .1 .0
db file sequential read 28.4K 60.2 3.3 18.0 18.1 .3 .1 .0
db file single write 2 100.0
direct path read 2 50.0 50.0
direct path read temp 1722 95.8 2.8 .1 .5 .8 .1
direct path write 6 83.3 16.7
direct path write temp 4842 96.3 2.7 .5 .2 .0 .0 .2
enq: AF - task serialization 1 100.0
enq: CF - contention 145 99.3 .7
enq: CO - master slave det 1203 98.9 .8 .2
enq: CR - block range reuse ckpt 83 100.0
enq: DR - contention 2 100.0
enq: FB - contention 131 100.0
enq: HW - contention 97 100.0
enq: JQ - contention 19 89.5 10.5
enq: JS - job run lock - synchronize 3 100.0
enq: MD - contention 1 100.0
enq: MW - contention 2 100.0
enq: PS - contention 3207 99.5 .4 .1
enq: TA - contention 11 100.0
enq: TD - KTF dump entries 8 100.0
enq: TK - Auto Task Serialization 6 100.0
enq: TM - contention 58 100.0
enq: TO - contention 3 100.0
enq: TQ - DDL contention 1 100.0
enq: TS - contention 1 100.0
enq: UL - contention 1 100.0
enq: US - contention 7 100.0
enq: WF - contention 11 81.8 18.2
enq: WL - contention 2 50.0 50.0
gc buffer busy acquire 2 50.0 50.0
gc cr block 2-way 4934 99.9 .1 .0 .0
gc cr block busy 35 68.6 31.4
gc cr block congested 6 100.0
gc cr disk read 2 100.0
gc cr grant 2-way 4824 100.0 .0
gc cr grant congested 2 100.0
gc cr multi block request 37.1K 99.8 .2 .0 .0 .0 .0 .0
gc current block 2-way 2134 99.9 .0 .0
gc current block busy 7 14.3 14.3 14.3 28.6 28.6
gc current block congested 2 100.0
gc current grant 2-way 1337 99.9 .1
gc current grant busy 7123 99.2 .2 .2 .0 .0 .3 .1
gc current grant congested 2 100.0
gc current multi block request 1260 99.8 .2
gc object scan 28.8K 100.0
gcs log flush sync 65 95.4 3.1 1.5
ges LMON to get to FTDONE 3 100.0
ges generic event 1 100.0
ges inquiry response 2 100.0
ges lms sync during dynamic remastering and reconfig 24 16.7 29.2 54.2
ges message buffer allocation 63.1K 100.0
kfk: async disk IO 23.3K 100.0 .0 .0
kjbdrmcvtq lmon drm quiesce: ping completion 9 11.1 88.9
ksxr poll remote instances 19.1K 100.0
latch free 52 59.6 40.4
latch: call allocation 2 100.0
latch: gc element 1 100.0
latch: gcs resource hash 1 100.0
latch: ges resource hash list 135 100.0
latch: object queue header operation 5 40.0 40.0 20.0
latch: shared pool 5 40.0 20.0 20.0 20.0
library cache load lock 74 9.5 5.4 8.1 17.6 10.8 13.5 35.1
library cache lock 493 99.2 .4 .4
library cache pin 1186 98.4 .3 1.2 .1
library cache: mutex X 6 100.0
log file parallel write 3897 72.9 1.5 17.1 7.5 .6 .3 .1
log file sequential read 350 4.6 3.1 59.4 30.0 2.9
log file single write 6 100.0
log file switch completion 3 33.3 66.7
log file sync 385 90.4 3.6 4.7 .8 .5
name-service call wait 18 5.6 5.6 5.6 16.7 44.4 22.2
os thread startup 146 100.0
rdbms ipc reply 3763 99.7 .3
read by other session 2 50.0 50.0
reliable message 4565 99.7 .2 .0 .0 .1
row cache lock 2334 99.3 .2 .1 .1 .3
undo segment extension 8 50.0 37.5 12.5
utl_file I/O 11 100.0
ASM background timer 3343 57.0 .3 .1 .1 .1 21.1 21.4
DIAG idle wait 203.2K 3.4 .2 .4 18.0 41.4 14.8 21.8
JOX Jit Process Sleep 73 2.7 97.3
KSV master wait 2213 99.4 .1 .2 .3
PING 1487 81.0 19.0
PX Deq Credit: send blkd 7 57.1 14.3 14.3 14.3
PX Deq: Execute Reply 2966 59.8 .8 9.5 5.6 10.2 2.6 11.4
PX Deq: Execution Msg 10.6K 72.4 12.1 2.6 2.5 .1 5.6 4.6 .0
PX Deq: Join ACK 3006 77.9 22.1 .1
PX Deq: Parse Reply 3184 67.1 31.1 1.6 .2
PX Idle Wait 6466 .2 8.7 4.3 4.8 .3 .1 5.0 76.6
SQL*Net message from client 14.7K 72.4 2.8 .8 .5 .9 .4 2.8 19.3
Space Manager: slave idle wait 722 100.0
Streams AQ: RAC qmn coordinator idle wait 259 100.0
Streams AQ: qmn coordinator idle wait 250 50.0 50.0
Streams AQ: qmn slave idle wait 125 100.0
class slave wait 55 67.3 7.3 1.8 5.5 1.8 7.3 9.1
dispatcher timer 66 6.1 93.9
gcs remote message 218.6K 7.7 1.8 1.2 1.6 1.7 15.7 70.3
ges remote message 72.9K 29.7 5.1 2.7 2.2 1.5 4.0 54.7
heartbeat monitor sleep 722 100.0
jobq slave wait 7725 .1 .0 99.9
pmon timer 1474 18.4 81.6
rdbms ipc message 103.3K 20.7 2.7 1.5 1.3 .9 .7 40.7 31.6
shared server idle wait 121 100.0
smon timer 18 100.0
wait for unread message on broadcast channel 7238 .3 99.7
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Wait Event Histogram Detail (64 msec to 2 sec)
* Units for Total Waits column: K is 1000, M is 1000000, G is 1000000000
* Units for % of Total Waits: ms is milliseconds s is 1024 milliseconds (approximately 1 second)
* % of Total Waits: total waits for all wait classes, including Idle
* % of Total Waits: value of .0 indicates value was <.05%; value of null is truly 0
* Ordered by Event (only non-idle events are displayed)
% of Total Waits
Event Waits 64ms to 2s <32ms <64ms <1/8s <1/4s <1/2s <1s <2s >=2s
ASM file metadata operation 6 99.8 .1 .1
DFS lock handle 6 99.9 .1 .0
OJVM: Generic 16 55.6 2.8 41.7
PX Deq: Signal ACK RSG 3 99.9 .0 .1
PX Deq: Slave Session Stats 3 99.9 .0 .0 .0
SQL*Net break/reset to client 1 95.0 5.0
control file sequential read 1 100.0 .0
db file parallel read 34 91.4 8.6
db file scattered read 4 100.0 .0 .0
db file sequential read 6 100.0 .0 .0 .0
direct path write temp 11 99.8 .1 .1 .0
enq: WF - contention 2 81.8 18.2
gc cr block 2-way 1 100.0 .0
gc cr multi block request 1 100.0 .0
gc current block 2-way 1 100.0 .0
gc current block busy 2 71.4 28.6
gc current grant busy 8 99.9 .0 .1
ges lms sync during dynamic remastering and reconfig 13 45.8 20.8 33.3
kjbdrmcvtq lmon drm quiesce: ping completion 8 11.1 11.1 77.8
latch: shared pool 1 80.0 20.0
library cache load lock 26 64.9 14.9 12.2 4.1 4.1
log file parallel write 2 99.9 .0 .0
log file sequential read 10 97.1 2.0 .6 .3
log file switch completion 2 33.3 66.7
name-service call wait 4 77.8 22.2
os thread startup 146 100.0
reliable message 4 99.9 .0 .1
row cache lock 2 99.7 .0 .0 .3
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Wait Event Histogram Detail (4 sec to 2 min)
* Units for Total Waits column: K is 1000, M is 1000000, G is 1000000000
* Units for % of Total Waits: s is 1024 milliseconds (approximately 1 second) m is 64*1024 milliseconds (approximately 67 seconds or 1.1 minutes)
* % of Total Waits: total waits for all wait classes, including Idle
* % of Total Waits: value of .0 indicates value was <.05%; value of null is truly 0
* Ordered by Event (only non-idle events are displayed)
% of Total Waits
Event Waits 4s to 2m <2s <4s <8s <16s <32s < 1m < 2m >=2m
row cache lock 6 99.7 .3
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Wait Event Histogram Detail (4 min to 1 hr)
No data exists for this section of the report.
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Service Statistics
* ordered by DB Time
Service Name DB Time (s) DB CPU (s) Physical Reads (K) Logical Reads (K)
ubshost 1,934 1,744 445 73,633
SYS$USERS 105 45 1 404
SYS$BACKGROUND 0 0 1 128
ubshostXDB 0 0 0 0
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Service Wait Class Stats
* Wait Class info for services in the Service Statistics section.
* Total Waits and Time Waited displayed for the following wait classes: User I/O, Concurrency, Administrative, Network
* Time Waited (Wt Time) in seconds
Service Name User I/O Total Wts User I/O Wt Time Concurcy Total Wts Concurcy Wt Time Admin Total Wts Admin Wt Time Network Total Wts Network Wt Time
ubshost 60232 90 2644 4 0 0 13302 0
SYS$USERS 997 2 525 19 0 0 1973 0
SYS$BACKGROUND 1456 2 1258 14 0 0 0 0
I am not able to paste the whole awr report. I have paste some of the sections of awr report.
Please help.
Thanks and Regards, -
How to calculate the shared pool size ..........
Does anyone know if there is a decent algorithm/method to calculate the shared pool size in Oracle 8.1.7.
look my answer on your thread about db cache size
How to Calculate the DB Block Buffer value. -
Hi experts,
How could i check current shared pool size in my 8i instance? i want to increase the size of these memory what would be the command?
Regards,
SKPSumit,
How could i check current shared pool size in my 8iif you're just interested in the size, a "show parameter shared_p" in SQL*Plus would fit your needs. A look at init.ora is also sufficient as you can neither grow or shrink the shared pool in 8i, so "shared_pool_size" will show your current settings.
Regards,
--==/ Uwe \==-- -
Increased Shared Pool size longer hot backup time?
Hello,
I have hot backup that usually took 2 hours to complete. Then we had to increase Shared pool size from 280Mb to 380Mb due to some performance issue.
One week after increase of size the hot backup is taking 4 hours to complete. Since there was no other changes to the system I am suspecting size increase
of Shared Pool from 280Mb to 380Mb might be is reason for such drastic increase of backup time.
I would like to get your comments on my suspicion to the problem.
thank youPaul.S wrote:
One week after increase of size the hot backup is taking 4 hours to complete. Since there was no other changes to the system I am suspecting size increase of Shared Pool from 280Mb to 380Mb might be is reason for such drastic increase of backup time.Hmm... at first glance it does not seem that this is the problem.. but perhaps it contributes to it.
When a SQL hits the SQL engine, the 1st thing the SQL engine does is determine if there is an existing parsed and ready-to-use copy of that SQL. If there is, that existing SQL is re-used - thus the name SQL Shared Pool. The resulting soft parse of the SQL is a lot faster (or should be) than a hard parse . A hard parse is where there is no re-usable copy, and the SQL needs to be parsed, validated and execution plan determined, etc.
Kind of like re-using an existing compiled program (with different input data) versus compiling that program before using it. (and that is what source SQL is - a program that needs to be compiled).
Okay, now what happens if there 100's of 1000's of SQLs in your shared pool? The scan that the SQL engine does to determine if there is a re-usable cursor, becomes pretty slow. A soft parse quickly becomes very expensive.
The problem is typically clients that create SQLs that are not sharable (where the input data is hardcoded into the program, instead of input variables to the program). In other words, SQLs that do not use bind variables.
Each and every hardcoded SQL that hits the SQL engine, is now a brand new SQL. And requires storage in the SQL Shared Pool. Shared Pool footprint grows and you start getting errors like insufficient shared pool memory.. and increase the shared pool which means even more space to store even more unique non-sharable SQLs and making soft and hard parses even more expensive.
Like moving the wall a few metres further and then running even faster into it. !http://www.pprune.org/forums/images/smilies2/eusa_wall.gif!
Now if the backup fires off a load of SQLs against the SQL engine, the fast soft/hard parses can now be a lot slower than previously, thanks to a larger shared pool that now caters for more junk than before.
Unsure if this is the problem that you are experiencing.. but assuming that your suspicion is correct, it offers an explanation as to why there can be a degradation in performance. -
HI,
EBS:12.0.6
DB:10.2.0.3
This is the formula to calculate shared pool size..
minimum share_pool_size = — mp(sp_idx).minvalue — + — (Num_of_CPU * 2MB) + — (Num_of_sessions * 17408) + — (10% of the old shared_pool_size for overhead)from where i can get the values for
1.mp(sp_idx).minvalue
2.No of CPU means - the no of CPU in the cpuinfo.txt of OS ?
3.No of sessions ? how to get ?
ThanksGoogle ....Please see the docs referenced in your other thread, those docs are the official ones to use for setting SHARED_POOL_SIZE parameter -- increase SGA Size
Thanks,
Hussein -
I am trying to start an oracle instance and tell it to use the init.ora file. However i am receiveing an error about my pool size being too small. Please see below:
SQL> startup pfile=/home/oracle/OraHome_1/dbs/init.ora
ORA-00371: not enough shared pool memory, should be atleast 52132659 bytes
I checked init.ora and the shared_pool_size is set to 3500000. However, i tried the other settings, as it had a medium and a large option, i tried these just to see what would happen. It didn't work, and i don't think this is the problem.
I then tried this query:
SQL> SELECT shared_pool_size_for_estimate,
2 shared_pool_size_factor,
3 estd_lc_time_saved
4 FROM v$shared_pool_advice;
And it output the settings for my shared_pool_size. The setting for "level 1: 76".
Can anyone tell me if this is too low, or how to fix this problem?
Thanks,
GarySet shared_pool_size to 83886080. Depending on your
RAM and your applications you may need to further
increase this value.I did this and tried to start oracle, i then got this error:
SQL> startup pfile=/home/oracle/OraHome_1/dbs/init.ora
ORACLE instance started.
Total System Global Area 117440512 bytes
Fixed Size 777952 bytes
Variable Size 116400416 bytes
Database Buffers 0 bytes
Redo Buffers 262144 bytes
ORA-00205: error in identifying controlfile, check alert log for more info
Any ideas on what this means?
I have googled, but i'm not sure. In init.ora i found this abotu control files:
# define two control files by default
control_files = (ora_control1, ora_control2)
Does this look right?
Gary. -
Shared pool size problem while data capture
Sir ,
I am using oracle 10g streams for Data Replication
But facing some problems after replicating 2-3 tables.
While adding rule of type capture am getting error
Ora-4031 & ora 1280.
Next I set the
Database Mode = archive
Share_pool_size=52m &
share_pool_reseved_size= 5m (10% of share pool Area)
processes=500
parallel_max_servers=35
parallel-min_servers=1
job_que_processes=1
aq_tm_processe=1
global_name=trueThis can be done in Oracle 9i, at least 9.2, if you are using an SPFILE.
Brgds
JE -
Need to tune SGA SIZE AND PGA SIZE, SHARED POOL SIZE.
Hi,
We have 2node rac with 11g on Linux with 32 bit RAM on each machine.
two instances are running on each machine. i.e on NODE1(OBI1,EBS1) and on node2(OBI2,EBS2) instances.
we allocated memory parameter as follows.
FOR OBI1,OBI2 :-
sga_target --> 10g
sga_max_size --> 10g
pga_aggregate_target --> 3g.
shared_pool_size --> 2g
FOR EBS1,EBS2:-
sga_target --> 10g
sga_max_size --> 10g
pga_aggregate_target --> 3g.
shared_pool_size --> 2g
Now my client is asking me to tune these parameters. Can any body give me the references like how to decide the approximate values for these values for my environment. i know this is not a straight way.
Regards
DBA.Hi,
Please find the output of the above query.
SGA_SIZE SGA_SIZE_FACTOR ESTD_DB_TIME ESTD_DB_TIME_FACTOR ESTD_PHYSICAL_READS
10240 1 325493 1 6290582
2560 0.25 728356 2.2377 49655967
3840 0.375 477498 1.467 22523429
5120 0.5 394888 1.2132 13603384
6400 0.625 356805 1.0962 9493746
7680 0.75 336332 1.0333 7284494
8960 0.875 330961 1.0168 6705131
11520 1.125 318495 0.9785 5536341
12800 1.25 315077 0.968 5261443
14080 1.375 311204 0.9561 4623578
15360 1.5 301504 0.9263 3576196
16640 1.625 299356 0.9197 3576196
17920 1.75 299323 0.9196 3576196
19200 1.875 299323 0.9196 3576196
20480 2 299323 0.9196 3576196
Regards
DBA. -
why col3 ( library cache size ) is bigger than the col1( shared pool size ) ? As we all know , shared pool include the library cache and dictionary cache , then , it should be the col1 is bigger than the col3 .
anybody know why ? THS !
Shared Pool Advisory for DB: PROD Instance: PROD End Snap: 22321
-> Note there is often a 1:Many correlation between a single logical object
in the Library Cache, and the physical number of memory objects associated
with it. Therefore comparing the number of Lib Cache objects (e.g. in
v$librarycache), with the number of Lib Cache Memory Objects is invalid
Estd
Shared Pool SP Estd Estd Estd Lib LC Time
Size for Size Lib Cache Lib Cache Cache Time Saved Estd Lib Cache
Estim (M) Factr Size (M) Mem Obj Saved (s) Factr Mem Obj Hits
80 .6 *89* 5,882 139,907 1.0 42,649,471
96 .7 *104* 6,714 139,925 1.0 42,652,184
112 .8 *120* 7,429 139,937 1.0 42,654,170
128 .9 135 8,175 139,946 1.0 42,655,782
144 1.0 150 8,854 139,954 1.0 42,657,642
160 1.1 165 9,716 139,960 1.0 42,658,996
176 1.2 180 10,392 139,965 1.0 42,660,226
192 1.3 195 11,215 139,967 1.0 42,660,994
208 1.4 210 12,911 139,972 1.0 42,661,699
224 1.6 225 14,546 139,975 1.0 42,662,291
240 1.7 240 15,306 139,978 1.0 42,662,866
256 1.8 255 15,997 139,978 1.0 42,663,136
272 1.9 270 16,493 139,979 1.0 42,663,573
288 2.0 621 38,021 139,981 1.0 42,664,054
-------------------------------------------------------------hi , Justin , I am sorry for that . maybe following is ok . Tks !
Shared-Pool-Advisory-for-DB:-PROD--Instance:-PROD1--End-Snap:-22331----------
->-Note-there-is-often-a-1:Many-correlation-between-a-single-logical-object------
---in-the-Library-Cache,-and-the-physical-number-of-memory-objects-associated----
---with-it.--Therefore-comparing-the-number-of-Lib-Cache-objects-(e.g.-in--------
---v$librarycache),-with-the-number-of-Lib-Cache-Memory-Objects-is-invalid-------
----------------------------------------------------------Estd-------------------
Shared-Pool----SP-------Estd---------Estd-----Estd-Lib-LC-Time-------------------
---Size-for--Size--Lib-Cache----Lib-Cache---Cache-Time---Saved--Estd-Lib-Cache---
Estim-(M)-Factr-Size-(M)------Mem-Obj----Saved-(s)---Factr----Mem-Obj-Hits---
---------80----.6---------87--------5,872------144,545-----1.0------44,579,973---
---------96----.7--------102--------7,118------144,566-----1.0------44,582,964---
--------112----.8--------117--------7,944------144,578-----1.0------44,585,060---
--------128----.9--------132--------8,742------144,587-----1.0------44,586,757---
--------144---1.0--------147--------9,408------144,596-----1.0------44,588,686---
--------160---1.1--------172-------10,958------144,603-----1.0------44,590,080---
--------176---1.2--------187-------11,907------144,609-----1.0------44,591,407---
--------192---1.3--------202-------12,954------144,612-----1.0------44,592,290---
--------208---1.4--------217-------13,961------144,617-----1.0------44,593,017---
--------224---1.6--------232-------14,607------144,620-----1.0------44,593,636---
--------240---1.7--------247-------15,284------144,623-----1.0------44,594,230---
--------256---1.8--------262-------16,017------144,623-----1.0------44,594,505---
--------272---1.9--------277-------16,759------144,624-----1.0------44,594,954---
--------288---2.0--------676-------39,496------144,626-----1.0------44,595,443---
Edited by: Ysj on Oct 6, 2008 10:22 PM -
Dear buddies,
I am receiving this error:
ORA-04031: unable to allocate 32884 bytes of shared memory ("shared pool","grant select on query....","sql area","qry_text : ....")
In order to solve this, I need to give more space for the shared pool?
The total RAM size is 3.82GB(in My Computer's properties)
The current shared pool size is
I just performed a full backup and also made a copy of the init file.
The current value of:
shared_pool_size = 100M
sort_area_retained_size = 1048576
sort_area_size = 1048576
pga_aggregate_target = 30M
large_pool_size = 8m
log_buffer = 163840
So, in order to extend the space, how can I do it?
Just change the value to 200M? Is that okay? Some development is going on, and some packages are being compiled. Everything has been stopped after receiving this error. I should shut down, change the value and restart the database?
Please advice me.
Thanks in advance.
Cheers.
Nith
Edited by: user645399 on May 25, 2010 1:04 PMHi,There are two matter.
1.If you use automatic shared memory management(ASMM) then do followings:(To enabling this feature
you have to set sga_terget != 0 and statistics_level != basic).
sqlplus "/as sysdba"
show parameter sga_target; --then will return current value
alter system set sga_max_size=<newsize> scope=spfile
alter system set sga_target=<newsize> scope=spfile
then restart database;
shutdown immediate;
startup;
2.Else you can increase dynamically as:
sqlplus "/as sysdba"
show parameter shared_pool_size ; --then will return current value
alter system set shared_pool_size=<newsize>.
if you use pfile then you can use above method but also you have to change pfile -
InterMedia Image Import & Shared Pool Problem
Hi All
I have a SYS.ImagePkg.ImportImage stored procedure that its body described below:
(dest_nid number, filename varchar2, img_date varchar2) is
img_blob BLOB;
ctx raw(64) := null;
file_string varchar2(4) := 'file';
dir_string varchar2(8) := 'IMAGEDIR';
begin
delete from ImageTable where NID = dest_nid;
insert into ImageTable (NID, Image, ImageDate)
values (dest_nid, empty_blob(), img_date)
returning Image into img_blob;
ORDSYS.ORDImage.importFrom(ctx, img_blob,
file_string, dir_string, filename);
update ImageTable set image=img_blob where
NID=dest_nid;
commit;
end;
this stored procedure inserts an image into database. Also we have a VB
application that includes this code:
Set prm1 = cmd.CreateParameter("dest_nid", adNumeric, adParamInput)
Set prm2 = cmd.CreateParameter("filename", adVarChar, adParamInput, 14)
Set prm3 = cmd.CreateParameter("img_date", adVarChar, adParamInput, 8)
'-- Append parameters to command object
cmd.Parameters.Append prm1
cmd.Parameters.Append prm2
cmd.Parameters.Append prm3
For Each tFil In fld.Files
temp = Mid(fld.Path + "\", 7)
temp = RemoveCharacters(temp, "\")
nid = temp
crDate = Format(tFil.DateLastModified, "yyyy/MM/DD")
crDate = RemoveCharacters(crDate, "/")
cmd.CommandText = " call sys.ImagePkg.ImportImage(?, ?, ?) "
'-- Assign Parameter Values
cmd(0).Value = Val(nid)
cmd(1).Value = nid + ".jpg"
cmd(2).Value = crDate
cmd.Execute
Next
Automatic Shared Memory Management is Enabled and Shared pool size is 400M at startup. Also library cache size is 4M. But when we start application run, Insertion rate decreses from 45000 records per hour to 14000 records per hour after 44 hours and library cache size increases to 116M.
If continue running of application, approximatly after 5 days I recieve below error:
ORA-04031: unable to allocate 4096 bytes of shared memory ("shared pool","select /*+ rule */ bucket, e...","Typecheck heap","kgghteInit")
and application can not insert any record.
Please help me to solve this problem.Also, I would like to pitch the use of the image type rather than use of a database blob.
The media types, such as ORDImage, are native server datatypes. These
datatypes allows the database, and media aware tools and applications to
understand that a column or table contains media. This is similar to the
way that the DATE datatype allows the understanding that a column contains
a date.
The media types include the most common meta-data, such as mimetype, that is
needed by media applications. Without this meta-data, an application must
decide where and how this meta-data is to be stored and retreived. Perhaps extra
columns or tables in the database, or an application header in the binary data.
It is possible to store media in simple BLOBs, but by doing this, we take the
understanding of what is in the database out of the database, and put it into
the your application realm. Media aware applications and tools, existing
and future, will not be able to work easily with the media. Only your
application, or a new application you write specifically without the
advantage of media aware programming wizards, will be able to work well with
your media.
Storing media data into a BLOB is like storing a date in a text column, you
lose the intrinsic knowlege of what the column represents with the adverse
effect of media aware applications, tools and wizards not being able to work
effectively with the column, if at all. -
Increase Shared Pool for erorr # ORA-04031
hi,
what do i need to look at before i increase the shared pool of our database?
there is just the one database instance on the machine.
i am concerned about the repurcussions on the server.
i hope the information below is of help.
db version: 10.2.0.1.0
os: Red Hat Linux 3
SQL> select name, value from v$parameter where name like '%pool%';
name value
shared_pool_size 150994944
large_pool_size 33554432
java_pool_size 50331648
streams_pool_size 0
shared_pool_reserved_size 10066329
buffer_pool_keep
buffer_pool_recycle
global_context_pool_size
olap_page_pool_size 0
thanks,
santosh sewlalHi Santosh,
This is what i faced last two days back! Now i am monitoring the Issue! If you got any solutions please let me know how to avoid this!
ORA-04031 error can be due to either an inadequeate sizing of the SHARED POOL size or due to heavy
fragmentation leading the database to not finding large enough chuncks of memory.
You can monitor this with the two events...
alter system set events '4031 trace name errorstack level 3';
alter system set events '4031 trace name heapdump level 3';
Fragmentataion is one of the causes of ora 4031
Please refer these.
1.Article-ID: Note 146599.1
Title: Diagnosing and Resolving Error ORA-04031
2.Article-ID: Note 62143.1
Title: Understanding and Tuning the Shared Pool
3.Article-ID: Note 61623.1
This is paticular for Oracle 9i Rel 2, Hope the same for Oracle 10 G
Regards
Ravi -
ORA-04031 on 10g - should I just adjust my SGA POOL SIZE?
Has anyone gotten this message frequently:
ORA-04031: unable to allocate 37536 bytes of shared memory ("shared pool","unknown object","sga heap(1,0)","session parame")
We are a business intelligence application that issues lots of large queries. We just migrated to 10g and we are seeing this every 2-3 days on our testing machine.
In particular, I am not sure about "sga heap"... I would just set my Shared Pool Size higher - currently 144 MB but will this help here? Thoughts?In Oracle 10g a new feature called "automatic memory management" allows the dba to reserve a pool of shared memory that is used to allocate the shared pool, the buffer cache, the java pool and the large pool.
In general, when the database needs to allocate a large object into the shared pool and cannot find contiguous space available, it will automatically increase the shared pool size using free space from other SGA structure.
Since the space allocation is automatically managed by Oracle, the probability of getting ora-4031 errors may be greatly reduced. Automatic Memory Management is enabled when the parameter SGA_TARGET is greater than zero and the current setting can be obtained quering the v$sga_dynamic_components view.
Please refer to the 10g Administration Manual for further reference
http://download-west.oracle.com/docs/cd/B19306_01/server.102/b14231/toc.htm
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