Performance Tunning Issue

Hi,
We have recently migrated a schema from 10.2.0.4 (Standard Edition) database into 10.2.0.4 (Enterprise Edition).
After the import , the application users are complainig about the slow performance from the application end.
Moreimportantly , we have received ORA-04030: out of process memory when trying to allocate 64528 bytes (sort subheap,sort key)
I have run ADDM report which says :
FINDING 1: 100% impact (9997 seconds)
Significant virtual memory paging was detected on the host operating system.
RECOMMENDATION 1: Host Configuration, 100% benefit (9997 seconds)
ACTION: Host operating system was experiencing significant paging but no
particular root cause could be detected. Investigate processes that
do not belong to this instance running on the host that are consuming
significant amount of virtual memory. Also consider adding more
physical memory to the host.
The Windows 2003 server has 4 GB or RAM and i have already recommended the IT Team to incarease the RAM of the server upto 12GB.
SQL> show parameter sga
NAME TYPE VALUE
lock_sga boolean FALSE
pre_page_sga boolean FALSE
sga_max_size big integer 1080M
sga_target big integer 1080M
The CPU utilization of the server is reaching 50%.
Following are the wait event statistics :
SQL> @wait
SID EVENT SECS_WAIT STATE P1 P2 P3 WAIT_TIME P1TEXT
P2TEXT P3TEXT
986 read by other session 0 WAITING 80 8228 1 0 file#
block# class#
987 db file scattered read 0 WAITING 80 12814 14 0 file#
block# blocks
988 read by other session 0 WAITING 80 8228 1 0 file#
block# class#
991 read by other session 0 WAITING 81 30097 1 0 file#
block# class#
995 db file sequential read 0 WAITING 77 661720 1 0 file#
block# blocks
996 read by other session 0 WAITING 80 8228 1 0 file#
block# class#
1003 read by other session 0 WAITING 81 4986 1 0 file#
block# class#
1004 read by other session 0 WAITING 80 12814 1 0 file#
block# class#
1006 db file scattered read 0 WAITING 80 8228 2 0 file#
block# blocks
1007 db file sequential read 0 WAITING 81 18793 1 0 file#
block# blocks
1015 db file scattered read 0 WAITING 33 248859 16 0 file#
block# blocks
1016 read by other session 0 WAITING 81 30097 1 0 file#
block# class#
1017 db file sequential read 0 WAITING 34 789767 1 0 file#
block# blocks
1022 read by other session 0 WAITING 80 8231 1 0 file#
block# class#
1026 read by other session 0 WAITING 81 18793 1 0 file#
block# class#
1029 read by other session 0 WAITING 81 30097 1 0 file#
block# class#
1041 read by other session 0 WAITING 80 13022 1 0 file#
block# class#
1044 read by other session 0 WAITING 81 30144 1 0 file#
block# class#
1046 db file sequential read 0 WAITING 32 37769 1 0 file#
block# blocks
1055 SQL*Net message to client 0 WAITED SHORT TIME 1413697536 1 0 -1 driver id
#bytes
1058 read by other session 0 WAITING 81 5116 1 0 file#
block# class#
1060 read by other session 0 WAITING 81 30148 1 0 file#
block# class#
1065 read by other session 0 WAITING 80 13022 1 0 file#
block# class#
1068 db file scattered read 0 WAITING 81 5116 7 0 file#
block# blocks
1074 db file sequential read 0 WAITING 29 251560 1 0 file#
block# blocks
1078 read by other session 0 WAITING 80 13022 1 0 file#
block# class#
1081 read by other session 0 WAITING 80 13022 1 0 file#
block# class#
Any suggetions are appreciated .
Regards,
Girish
Edited by: Girish on Jun 29, 2011 3:37 AM

Girish wrote:
We have recently migrated a schema from 10.2.0.4 (Standard Edition) database into 10.2.0.4 (Enterprise Edition)
After the import , the application users are complainig about the slow performance from the application end.And why should 2 different databases exhibit the same performance? I fail to see any logic in that assumption.
Not disputing that performance is slower in comparison. But you can absolutely not use the older/previous database as a benchmark of what the performance should be on the new database. There are simply too many differences in order for the old db to serve as a performanve baseline for the new.
Moreimportantly , we have received ORA-04030: out of process memory when trying to allocate 64528 bytes (sort subheap,sort key)
The Windows 2003 server has 4 GB or RAM and i have already recommended the IT Team to incarease the RAM of the server upto 12GB. 32bit or 64bit? 32bit Windows uses a bit of a hack to address more physical RAM than what a physical 32bit memory address allows. It is not "as good" as native 64bit addressing.
Also, I would question Microsoft's strength in this arena - as 64bit Windows is an exception in the server and db environment. Unix/Linux is the rule otoh. Personally I would be a lot more comfortable using Linux on servers with large RAM (we use 32GB RAM per server node on a large Linux RAC cluster). It also enables options such as huge pages to to be used - as a large increase in memory means more virtual pages to handle. And this in itself can cause a performance knock not experienced with smaller memory footprints. Huge pages decreases the number of virtual pages by increasing vitual page size - allowing for the same relative performance with bigger memory footprints as the page numbers are not drastically increased.

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SELECT msi.inventory_item_id,msi.segment1,msi.rimary_uom_code , msi.primary_unit_of_measure
FROM mtl_system_items_b msi, qp_list_lines qpll,qp_pricing_attributes qppr,
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 AND qppr.product_attr_value = TO_CHAR (msi.inventory_item_id(+))
 AND qppr.product_uom_code = msi.primary_uom_code
 AND mc.category_id = mcb.category_id
 AND msi.inventory_item_id = mcb.inventory_item_id
 AND msi.organization_id = mcb.organization_id
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Thanks Helios ,
here is answers
Databse version
Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - 64bit
PL/SQL Release 11.1.0.7.0
explain plan
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)|
|
0 | SELECT STATEMENT
| |
1 | 149 | 9439
(1)|
|
1 | NESTED LOOPS | | 1 |
149 | 9439 (1)|
|*
2 | HASH JOIN OUTER | | 1 |
135 | 9437 (1)|
|*
3 | HASH JOIN | | 1 |
71 | 9432 (1)|
|
4 | NESTED LOOPS | | 2 |
76 | 53 (0)|
|*
5 | TABLE ACCESS BY INDEX
ROWID| QP_LIST_LINES | 2 |
44 | 49 (0)|
|*
6 | INDEX SKIP SCAN | QP_LIST_LINES_N2 |
702 | | 20
(0)|
|*
7 | INDEX RANGE SCAN | QP_PRICING_ATTRIBUTES_N3 | 1 |
16 | 2 (0)|
|*
8 | TABLE ACCESS BY INDEX
ROWID | MTL_SYSTEM_ITEMS_B | 46254
| 1490K|
9378 (1)|
|*
9 | INDEX RANGE SCAN | MTL_SYSTEM_ITEMS_B_N9 | 46254 | |
174 (1)|
|
10 | TABLE ACCESS FULL | XX_WEB_ITEM_IMAGE_TBL |
277 | 17728 | 5 (0)|
|* 11 | INDEX RANGE SCAN | MTL_ITEM_CATEGORIES_U1 |
1 | 14 | 2
(0)|
Predicate Information (identified
by operation id):
2 -
access("XWIIT"."IMAGE_CODE"(+)="MSI"."SEGMENT1")
3 -
access("QPPR"."PRODUCT_ATTR_VALUE"=TO_CHAR("MSI"."INVENTORY_ITEM_ID")
AND
"QPPR"."PRODUCT_UOM_CODE"="MSI"."PRIMARY_UOM_CODE")
5 - filter(NVL("QPLL"."START_DATE_ACTIVE",TRUNC(SYSDATE@!))<=TRUNC(SYSDATE@!)
AND
NVL("QPLL"."END_DATE_ACTIVE",TRUNC(SYSDATE@!))>=TRUNC(SYSDATE@!))
6 -
access("QPLL"."LIST_HEADER_ID"=TO_NUMBER(:P_PRICE_LIST_ID))
filter("QPLL"."LIST_HEADER_ID"=TO_NUMBER(:P_PRICE_LIST_ID))
7 -
access("QPLL"."LIST_LINE_ID"="QPPR"."LIST_LINE_ID")
filter("QPPR"."PRODUCT_UOM_CODE" IS NOT NULL)
8 - filter("MSI"."ENABLED_FLAG"='Y')
9 - access("MSI"."ORGANIZATION_ID"=TO_NUMBER(:P_ORGANIZATION_ID))
11 -
access("MCB"."ORGANIZATION_ID"=TO_NUMBER(:P_ORGANIZATION_ID)
AND
"MSI"."INVENTORY_ITEM_ID"="MCB"."INVENTORY_ITEM_ID"
AND
"MCB"."CATEGORY_ID"=TO_NUMBER(:P_CATEGORY_ID))
 filter("MCB"."CATEGORY_ID"=TO_NUMBER(:P_CATEGORY_ID))
Note
- 'PLAN_TABLE' is old version
TKprof Plan
TKPROF: Release 11.1.0.7.0 - Production on Fri Nov 15 06:12:26 2013
Copyright (c) 1982, 2007, Oracle. All rights reserved.
Trace file: LSSD_ora_19760.trc
Sort options: default
count = number of times OCI procedure was executed
cpu = cpu time in seconds executing
elapsed = elapsed time in seconds executing
disk = number of physical reads of buffers from disk
query = number of buffers gotten for consistent read
current = number of buffers gotten in current mode (usually for update)
rows = number of rows processed by the fetch or execute call
SELECT msi.inventory_item_id,
 msi.segment1,
 primary_uom_code,
 primary_unit_of_measure,
 xwiit.image_url
FROM mtl_system_items_b msi,
 qp_list_lines qpll,
 qp_pricing_attributes qppr,
 mtl_item_categories mcb,
 xx_web_item_image_tbl xwiit
WHERE msi.enabled_flag = 'Y'
 AND qpll.list_line_id = qppr.list_line_id
 AND qppr.product_attr_value = TO_CHAR (msi.inventory_item_id)
 AND qppr.product_uom_code = msi.primary_uom_code
 AND msi.inventory_item_id = mcb.inventory_item_id
 AND msi.organization_id = mcb.organization_id
 AND TRUNC (SYSDATE) BETWEEN NVL (qpll.start_date_active,
 TRUNC (SYSDATE))
 AND NVL (qpll.end_date_active,
 TRUNC (SYSDATE))
 AND xwiit.image_code(+) = msi.segment1
 AND msi.organization_id = :p_organization_id
 AND qpll.list_header_id = :p_price_list_id
 AND mcb.category_id = :p_category_id
call count cpu elapsed disk query current rows
Parse 2 0.00 0.00 0 0 0 0
Execute 2 0.00 0.00 0 0 0 0
Fetch 2 3.84 3.85 0 432560 0 1002
total 6 3.84 3.85 0 432560 0 1002
Misses in library cache during parse: 0
Optimizer mode: ALL_ROWS
Parsing user id: 173
Rows Row Source Operation
 501 NESTED LOOPS (cr=216280 pr=0 pw=0 time=115 us cost=9439 size=149 card=1)
 2616 HASH JOIN OUTER (cr=211012 pr=0 pw=0 time=39 us cost=9437 size=135 card=1)
78568 HASH JOIN (cr=210997 pr=0 pw=0 time=3786 us cost=9432 size=71 card=1)
78571 NESTED LOOPS (cr=29229 pr=0 pw=0 time=35533 us cost=53 size=76 card=2)
78571 TABLE ACCESS BY INDEX ROWID QP_LIST_LINES (cr=9943 pr=0 pw=0 time=27533 us cost=49 size=44 card=2)
226733 INDEX SKIP SCAN QP_LIST_LINES_N2 (cr=865 pr=0 pw=0 time=4122 us cost=20 size=0 card=702)(object id 99730)
78571 INDEX RANGE SCAN QP_PRICING_ATTRIBUTES_N3 (cr=19286 pr=0 pw=0 time=0 us cost=2 size=16 card=1)(object id 99733)
128857 TABLE ACCESS BY INDEX ROWID MTL_SYSTEM_ITEMS_B (cr=181768 pr=0 pw=0 time=9580 us cost=9378 size=1526382 card=46254)
128857 INDEX RANGE SCAN MTL_SYSTEM_ITEMS_B_N9 (cr=450 pr=0 pw=0 time=1657 us cost=174 size=0 card=46254)(object id 199728)
 277 TABLE ACCESS FULL XX_WEB_ITEM_IMAGE_TBL (cr=15 pr=0 pw=0 time=22 us cost=5 size=17728 card=277)
 501 INDEX RANGE SCAN MTL_ITEM_CATEGORIES_U1 (cr=5268 pr=0 pw=0 time=0 us cost=2 size=14 card=1)(object id 99557)
Note: I modified query and it gives good result, now it takes 3 to 4 sec for 16000 records.
If possible can you plz explain what we have to take care while doing performance tunning
I am a fresher so don't have that much idea.
and also Thanks Hussein for your replay

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I am in middle of performance tunning in BI 7.0, as i am going to do the following steps-i am unclear in some steps;
expert advice is needed. post ur ans as soon as possible.
When loading transaction data, following this procedure:
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Unknown - Turn on number range buffering.
Unknown - Set an appropriate data packet size.
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http://help.sap.com/saphelp_nw04/helpdata/en/7b/6eb2aa7aed44ea92ebb969e03081fb/frameset.htm
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/c0a6e3ff-f000-2d10-b59d-8ef35e248f83?quicklink=index&overridelayout=true

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Thanks Regards,
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box contains options for analyzing performance files. (For further information refer sections 4.
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regards,
keerthi

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I know how to run AWR and ADDM but i want to konw what are the sequence i follow to learn and do performance tunning.
Thanks in advance

best would be to start with http://docs.oracle.com/cd/E11882_01/server.112/e16638/toc.htm
Regards
Karan

How to do Performance tunning in OBIEE

Hi All,
We are using OBIEE 10.3.4 version on windows envorinment .In our OBIEE project we are using 9 reports my requriment is we need to do performance tunning for OBIEE side.For eace report accessing its taking around 80 sec.We need to decrease these accessing time,is there any possibility to access all the reports with less response time in OBIEE side.
Could you anyone suggest how to do performance tunning in OBIEE side.
Thanks,
Vijay.

Vijay,
Plz refer
http://www.business-intelligence-quotient.com/?p=119
http://prolynxuk.com/blog/?p=173
http://businessdecisionsystems.com/blog/?p=486
Here is the section from the BIEE admin guide:
=======================
Usage Examples
This section provides a few examples of how to use Oracle hints in conjunction with the Oracle BI Server. For more information about Oracle hints, refer to the Oracle SQL Reference documentation for the version of the Oracle server that you use.
Index Hint
The Index hint instructs the optimizer to scan a specified index rather than a table. The following hypothetical example explains how you would use the Index hint. You find queries against the ORDER_ITEMS table to be slow. You review the query optimizer's execution plan and find the FAST_INDEX index is not being used. You create an Index hint to force the optimizer to scan the FAST_INDEX index rather than the ORDER_ITEMS table. The syntax for the Index hint is index(table_name, index_name). To add this hint to the repository, navigate to the Administration Tool's Physical Table dialog box and type the following text in the Hint field:
index(ORDER_ITEMS, FAST_INDEX)
Leading Hint
The Leading hint forces the optimizer to build the join order of a query with a specified table. The syntax for the Leading hint is leading(table_name). If you were creating a foreign key join between the Products table and the Sales Fact table and wanted to force the optimizer to begin the join with the Products table, you would navigate to the Administration Tool's Physical Foreign Key dialog box and type the following text in the Hint field:
leading(Products)
So, the table names "order_items" and "products" in the above documentation will not be the same after BIEE puts aliases on them.
============
Hope this is useful..
Edited by: Deepak Gupta on Aug 1, 2011 7:18 AM

Performance Tunning Issue

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