View's In Oracle - Performance Issues -some doubts

Hi,
"I have some tables with names T_SRI_MMYYYY in my database.
I created a view ,Say "Summary_View" for all the table names
with "T_SRI_%".
Now i want to select data from all the tables in the view
Summary_View.
How can i do that ? Please throw some light on the same?
Thanks and Regards
Srinivas Chebolu

I've got no idea what this has to do with the subject you
posted. But you can do this:
spool alltabs.sql
SELECT 'select * from '||table_name||';'
FROM summary_views
spool off
and then from sql*Plus just run @alltabs
If you want to do this in PL/SQL you'll have to do something
fancy with EXECUTE IMMEDIATE.
Regards, APC

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Hardware Configuration:
Regarding Oracle Performance Issue.
Configuration 1
================
SunV880 - Sunfire
32 GB RAM
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Software Configuration:
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OS version - Solaris 8
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================
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How to improve my performance activities on Oracle server.
Please guide me regarding this issue.
If anyone wants more info, please let me know.
Best regards,
Senthilkumar

Are you sure that it is not an application constraint ? i.e. the application can't handle so much data per second ? (application locks, threads )
Have you tried to write a simple test program, which inserts predefined data (which your application inserts) the same data, only changing keys ?
Then comparing the values from the 1st and the 2nd configuration ?
Did you check the way your application is communicating with oracle ? If it is TCP/ip (even on the local machine) then this is your main problem.
And one more thing, do you know if your application is able to run the load (inserts) of data on different threads (i.e. in parallel), because if is not, you won't be able to push the speed higher because your constraint is the speed of a single CPU. Consider running several process, which loads the data.
We had the same problem ot AIX machines with 4 cpus. Monitoring the machine, we found that only 25% (1 cpu) where in use. We had to run 4 processes to push the speed up. Check your system's overal load while running the 'load' (inserts).
log_checkpoint_interval = 10000
Check if this value is appropriate. Maybe you should set it to 0 (infinite). This will disable checkpoints on a 'number of undo record' basis. Checpoints will occure only on log switch.
How much redo files per redo groups do you have ? What is their size ? Are they on different disks ? How much redo data is generated by a single 'record' inserted ?
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Oracle Performance Issues

Greetings listers,
I've some performance metrics reported as critical on my system. Can you help me understand how to fix these issues? I've the performance tuning guide , which am going through. would like to know the experts comments here about these and any quick pointers ?
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What version of Oracle?
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HTH -- Mark D Powell --
Message was edited by: mdp fix lang item 3
mpowel01

Performance issue: extractor:

Hi,
I have an issue with the performnace of the extractor:
Extractor is a generic one with FM in its definition
The reason i found was logic in the FM:
the select statement was extracting the fields from View and one more table with join statement: like shown below:
FROM ( view                    AS p
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Raj

Hii Karan
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Viki

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Gert-Jan

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http://www.saphosting.de/mediacenter/pdfs/solutionbriefs/MaxDB_de.pdf
http://www.saphosting.com/mediacenter/pdfs/solutionbriefs/maxDB-migration-support_en.pdf.
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Hi,
We were using Oracle 9i in Solaris 5.8 and it was working fine with some minor performance issues. We formatted the Solaris server with new Solaris 5.10 and installed Oracle 10g.
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There are a lot of changes to the optimizer in the upgrade from 9i to 10g, and you need to be aware of them. There are also a number of changes to the default stats collection mechanism, so after your upgrade your statistics (hence execution paths) could change dramatically.


Greg Rahn has a useful entry on his blog about stats collection, and the blog al,so points to an Oracle white paper which will give you a lot of ideas about where the optimizer changes - which may help you spot your critical issues.

Otherwise, follow triggb's advice about using Statspack to find the SQL that is the most expensive - it's reasonably likely to be this SQL that has changed execution plans in the upgrade.

Regards
Jonathan Lewis
http://jonathanlewis.wordpress.com
http://www.jlcomp.demon.co.uk

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Hi Group,
I am working in a performance issue at customer site, let me explain the behaviour.
There is one node for the database and other for the application.
Application server is running all the services.
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If both servers are on the same network then the ping should not exceed 2 ms.
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Did this happen after you performed the hardware upgrade?
Yes, it happened after changing some memory parameters in the JVM and the database.
Oracle has suggested to apply the latest Forms patches according to this Note: Doc ID 437878.1
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Kind regards,
Francisco Mtz.

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Hi,
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Java Vendor: HP
Java Version: 1.6.0.14
OS: HP-UX
OS Version: B.11.31
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# 8395254: add -da:org.apache.xmlbeans... in EXTRA_JAVA_PROPERTIES
EXTRA_JAVA_PROPERTIES="${EXTRA_JAVA_PROPERTIES} -da:org.apache.xmlbeans..."
XENGINE_DIR="${SOA_ORACLE_HOME}/soa/thirdparty/edifecs/XEngine"
DEFAULT_MEM_ARGS="-Xms512m -Xmx1024m"
PORT_MEM_ARGS="-Xms768m -Xmx1536m"
if [ "${JAVA_VENDOR}" != "Oracle" ] ; then
DEFAULT_MEM_ARGS="${DEFAULT_MEM_ARGS} -XX:PermSize=128m -XX:MaxPermSize=512m"
PORT_MEM_ARGS="${PORT_MEM_ARGS} -XX:PermSize=256m -XX:MaxPermSize=512m"
fi
#========================================================
# setup LD_LIBRARY_PATH if directory is present...
#========================================================
if [ -d ${XENGINE_DIR}/bin ]; then
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fi
#========================================================
# setup platform specific environment variables
#========================================================
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# AIX
AIX)
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# HPUX
HP-UX)
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       export SHLIB_PATH
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XMS_SUN_64BIT="256"
export XMS_SUN_64BIT
XMS_SUN_32BIT="256"
export XMS_SUN_32BIT
XMX_SUN_64BIT="512"
export XMX_SUN_64BIT
XMX_SUN_32BIT="512"
export XMX_SUN_32BIT
XMS_JROCKIT_64BIT="256"
export XMS_JROCKIT_64BIT
XMS_JROCKIT_32BIT="256"
export XMS_JROCKIT_32BIT
XMX_JROCKIT_64BIT="512"
export XMX_JROCKIT_64BIT
XMX_JROCKIT_32BIT="512"
export XMX_JROCKIT_32BIT
if [ "${JAVA_VENDOR}" = "Sun" ] ; then
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     export WLS_MEM_ARGS_64BIT
     WLS_MEM_ARGS_32BIT="-Xms256m -Xmx512m"
     export WLS_MEM_ARGS_32BIT
else
     WLS_MEM_ARGS_64BIT="-Xms512m -Xmx512m"
     export WLS_MEM_ARGS_64BIT
     WLS_MEM_ARGS_32BIT="-Xms512m -Xmx512m"
     export WLS_MEM_ARGS_32BIT
fi
if [ "${JAVA_VENDOR}" = "Oracle" ] ; then
     CUSTOM_MEM_ARGS_64BIT="-Xms${XMS_JROCKIT_64BIT}m -Xmx${XMX_JROCKIT_64BIT}m"
     export CUSTOM_MEM_ARGS_64BIT
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     CUSTOM_MEM_ARGS_64BIT="-Xms${XMS_SUN_64BIT}m -Xmx${XMX_SUN_64BIT}m"
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     export CUSTOM_MEM_ARGS_32BIT
fi
MEM_ARGS_64BIT="${CUSTOM_MEM_ARGS_64BIT}"
export MEM_ARGS_64BIT
MEM_ARGS_32BIT="${CUSTOM_MEM_ARGS_32BIT}"
export MEM_ARGS_32BIT
if [ "${JAVA_USE_64BIT}" = "true" ] ; then
     MEM_ARGS="${MEM_ARGS_64BIT}"
     export MEM_ARGS
else
     MEM_ARGS="${MEM_ARGS_32BIT}"
     export MEM_ARGS
fi
MEM_PERM_SIZE_64BIT="-XX:PermSize=128m"
export MEM_PERM_SIZE_64BIT
MEM_PERM_SIZE_32BIT="-XX:PermSize=128m"
export MEM_PERM_SIZE_32BIT
if [ "${JAVA_USE_64BIT}" = "true" ] ; then
     MEM_PERM_SIZE="${MEM_PERM_SIZE_64BIT}"
     export MEM_PERM_SIZE
else
     MEM_PERM_SIZE="${MEM_PERM_SIZE_32BIT}"
     export MEM_PERM_SIZE
fi
MEM_MAX_PERM_SIZE_64BIT="-XX:MaxPermSize=512m"
export MEM_MAX_PERM_SIZE_64BIT
MEM_MAX_PERM_SIZE_32BIT="-XX:MaxPermSize=512m"
export MEM_MAX_PERM_SIZE_32BIT
if [ "${JAVA_USE_64BIT}" = "true" ] ; then
     MEM_MAX_PERM_SIZE="${MEM_MAX_PERM_SIZE_64BIT}"
     export MEM_MAX_PERM_SIZE
else
     MEM_MAX_PERM_SIZE="${MEM_MAX_PERM_SIZE_32BIT}"
     export MEM_MAX_PERM_SIZE
fi
if [ "${JAVA_VENDOR}" = "Sun" ] ; then
     if [ "${PRODUCTION_MODE}" = "" ] ; then
          MEM_DEV_ARGS="-XX:CompileThreshold=8000 ${MEM_PERM_SIZE} "
          export MEM_DEV_ARGS
     fi
fi
# Had to have a separate test here BECAUSE of immediate variable expansion on windows
if [ "${JAVA_VENDOR}" = "Sun" ] ; then
     MEM_ARGS="${MEM_ARGS} ${MEM_DEV_ARGS} ${MEM_MAX_PERM_SIZE}"
     export MEM_ARGS
fi
if [ "${JAVA_VENDOR}" = "HP" ] ; then
     MEM_ARGS="${MEM_ARGS} ${MEM_MAX_PERM_SIZE}"
     export MEM_ARGS
fi
if [ "${JAVA_VENDOR}" = "Apple" ] ; then
     MEM_ARGS="${MEM_ARGS} ${MEM_MAX_PERM_SIZE}"
     export MEM_ARGS
fi
if [ "${debugFlag}" = "true" ] ; then
     JAVA_OPTIONS="${JAVA_OPTIONS} -da:org.apache.xmlbeans... "
     export JAVA_OPTIONS
fi
export USER_MEM_ARGS="-Xms4g -Xmx6g -XX:PermSize=2g -XX:+UseParallelGC -XX:+UseParallelOldGC"Here is the output of the top command
Load averages: 0.08, 0.06, 0.06
315 processes: 205 sleeping, 110 running
Cpu states:
CPU   LOAD   USER   NICE    SYS   IDLE BLOCK SWAIT   INTR   SSYS
0    0.06   4.0%   0.2%   1.0% 94.8%   0.0%   0.0%   0.0%   0.0%
2    0.07   3.6%   5.0%   0.2% 91.2%   0.0%   0.0%   0.0%   0.0%
4    0.07   2.0%   0.2%   0.0% 97.8%   0.0%   0.0%   0.0%   0.0%
6    0.07   2.4%   0.2%   0.8% 96.6%   0.0%   0.0%   0.0%   0.0%
8    0.09   1.2%   0.2% 10.9% 87.7%   0.0%   0.0%   0.0%   0.0%
10    0.12   3.0%   0.0% 11.1% 85.9%   0.0%   0.0%   0.0%   0.0%
12    0.08   3.0%   0.2%   6.6% 90.3%   0.0%   0.0%   0.0%   0.0%
14    0.09   4.2%   1.2%   0.8% 93.8%   0.0%   0.0%   0.0%   0.0%
avg   0.08   3.0%   1.0%   3.8% 92.2%   0.0%   0.0%   0.0%   0.0%
System Page Size: 4Kbytes
Memory: 38663044K (38379156K) real, 149420048K (148978096K) virtual, 26349848K f
ree Page# 1/63
CPU TTY PID USERNAME PRI NI   SIZE    RES STATE    TIME %WCPU %CPU COMMAND
4   ? 3926 root     152 20   213M 70040K run    694:47 10.05 10.04 cimprovagt
4   ? 6855 user1 152 20 7704M 1125M run      4:36 9.31 9.29 java
0   ? 6126 user2 152 20 2790M 1863M run     22:57 4.16 4.15 javaHere is the Memory on the box
Memory: 98132 MB (95.83 GB)
Thanks

After changing JVM settigns for soa cluster it's a bit better but still slow so wondering what other tweaks can be done on the JVM side. Here is what is for the SOA Cluster
USER_MEM_ARGS="-server -Xms12928m -Xmx12928m -XX:PermSize=3072m -Xmn3232m -XX:+SXTElimination -XX:+UseParallelGC -XX:+UseParNewGC -XX:+ExplicitGCInvokesConcurrent -XX:-TraceClassLoading -XX:-TraceClassUnloading"
We are running multiple instances on the same boxes and the total RAM on the machine is 95 GB on each box which is being shared across 4 cluster environments. For now other 3 cluster environments have the SOA Cluster JVM setting as
USER_MEM_ARGS="-server -Xms4096m -Xmx4096m -XX:PermSize=1024m -Xmn1152m -XX:+SXTElimination -XX:+UseParallelGC -XX:+UseParNewGC -XX:+ExplicitGCInvokesConcurrent -XX:-TraceClassLoading -XX:-TraceClassUnloading"
Any help on what else I can tweak or set in JVM to get a better performance.
Thanks

Performance issue related to OWM? Oracle version is 10.2.0.4

The optimizer picks hash join instead of nested loop for the queries with OWM tables, which causes full table scan everywhere. I wonder if it happens in your databases as well, or just us. If you did and knew what to do to solve this, it would be great appriciated! I did log in a SR to Oracle but it usually takes months to reach the solution.
Thanks for any possible answers!

Ha, sounded like you knew what I was talking about :)
I thought the issue must've had something to do with OWM because some complicate queries have no performance issue while they're regular tables. There's a batch job which took an hour to run now it takes 4.5 hours. I just rewrote the job to move the queries from OWM to regular tables, it takes 20 minutes. However today when I tried to get explain plans for some queries involve regular tables with large amount of data, I got the same full table scan problem with hash join. So I'm convinced that it probably is not OWM. But the patch for removing bug fix didn't help with the situation here.
I was hoping that other companies might have this problem and had a way to work around. If it's not OWM, I'm surprised that this only happens in our system.
Thanks for the reply anyway!

Oracle 11g Migration performance issue

Hello,
There a performance issue with Migration from Oracle 10g(10.2.0.5) to Oracle 11g(11.2.0.2).
Its very simple statement hanging for more than a day and later found that query plan is very very bad. Example of the query is given below:
INSERT INTO TABLE_XYZ
SELECT F1,F2,F3
FROM TABLE_AB, TABLE_BC
WHERE F1=F4;
While looking at cost in Explain plan :
on 10g --> 62567
0n 11g --> 9879652356776
Strange thing is that
Scenario 1: if I issue just query as shown below, will display rows immediately :
SELECT F1,F2,F3
FROM TABLE_AB, TABLE_BC
WHERE F1=F4;
Scenario 2: If I create a table as shown below, will work correctly.
CREATE TABLE TABLE_XYZ AS
SELECT F1,F2,F3
FROM TABLE_AB, TABLE_BC
WHERE F1=F4;
What could be the issue here with INSERT INTO <TAB> SELECT <COL> FROM <TAB1>?

Table:
CREATE TABLE AVN_WRK_F_RENEWAL_TRANS_T
"PKSRCSYSTEMID" NUMBER(4,0) NOT NULL ENABLE,
"PKCOMPANYCODE" VARCHAR2(8 CHAR) NOT NULL ENABLE,
"PKBRANCHCODE" VARCHAR2(8 CHAR) NOT NULL ENABLE,
"PKLINEOFBUSINESS" NUMBER(4,0) NOT NULL ENABLE,
"PKPRODUCINGOFFICELIST" VARCHAR2(2 CHAR) NOT NULL ENABLE,
"PKPRODUCINGOFFICE" VARCHAR2(8 CHAR) NOT NULL ENABLE,
"PKEXPIRYYR" NUMBER(4,0) NOT NULL ENABLE,
"PKEXPIRYMTH" NUMBER(2,0) NOT NULL ENABLE,
"CURRENTEXPIRYCOUNT" NUMBER,
"CURRENTRENEWEDCOUNT" NUMBER,
"PREVIOUSEXPIRYCOUNT" NUMBER,
"PREVIOUSRENEWEDCOUNT" NUMBER
SEGMENT CREATION IMMEDIATE PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING STORAGE
INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT
TABLESPACE "XYZ" ;
Explain Plan(With Insert Statement and Query):_
INSERT STATEMENT, GOAL = ALL_ROWS Cost=9110025395866 Cardinality=78120 Bytes=11952360
LOAD TABLE CONVENTIONAL Object owner=ODS Object name=AVN_WRK_F_RENEWAL_TRANS
NESTED LOOPS OUTER Cost=9110025395866 Cardinality=78120 Bytes=11952360
TABLE ACCESS FULL Object owner=ODS Object name=AVN_WRK_F_RENEWAL_TRANS_1ST Cost=115 Cardinality=78120 Bytes=2499840
VIEW PUSHED PREDICATE Object owner=ODS Cost=116615788 Cardinality=1 Bytes=121
SORT GROUP BY Cost=116615788 Cardinality=3594 Bytes=406122
VIEW Object owner=SYS Object name=VW_DAG_1 Cost=116615787 Cardinality=20168 Bytes=2278984
SORT GROUP BY Cost=116615787 Cardinality=20168 Bytes=4073936
NESTED LOOPS OUTER Cost=116614896 Cardinality=20168 Bytes=4073936
VIEW Object owner=SYS Cost=5722 Cardinality=20168 Bytes=2157976
NESTED LOOPS Cost=5722 Cardinality=20168 Bytes=2097472
HASH JOIN Cost=924 Cardinality=1199 Bytes=100716
NESTED LOOPS
NESTED LOOPS Cost=181 Cardinality=1199 Bytes=80333
TABLE ACCESS BY INDEX ROWID Object owner=ODS Object name=INWARDSPOLICYDETAILS Cost=159 Cardinality=1199 Bytes=39567
INDEX RANGE SCAN Object owner=ODS Object name=IX_INWPOLDTLS_SYSCOMPANYBRANCH Cost=7 Cardinality=1199
INDEX UNIQUE SCAN Object owner=ODS Object name=PK_AVN_D_MASTERPOLICYDETAILS Cost=0 Cardinality=1
TABLE ACCESS BY INDEX ROWID Object owner=ODS Object name=AVN_D_MASTERPOLICYDETAILS Cost=1 Cardinality=1 Bytes=34
TABLE ACCESS FULL Object owner=ODS Object name=INWARDSPOLICYLOBMAPPING Cost=741 Cardinality=288498 Bytes=4904466
VIEW PUSHED PREDICATE Object owner=ODS Cost=4 Cardinality=1 Bytes=20
FILTER
SORT AGGREGATE Cardinality=1 Bytes=21
TABLE ACCESS BY GLOBAL INDEX ROWID Object owner=ODS Object name=AVN_F_TRANSACTIONS Cost=4 Cardinality=1 Bytes=21
INDEX RANGE SCAN Object owner=ODS Object name=PK_AVN_F_TRANSACTIONS Cost=3 Cardinality=1
VIEW PUSHED PREDICATE Object owner=ODS Cost=5782 Cardinality=1 Bytes=95
SORT GROUP BY Cost=5782 Cardinality=2485 Bytes=216195
VIEW Object owner=SYS Object name=VW_DAG_0 Cost=5781 Cardinality=2485 Bytes=216195
SORT GROUP BY Cost=5781 Cardinality=2485 Bytes=278320
HASH JOIN Cost=5780 Cardinality=2485 Bytes=278320
VIEW Object owner=SYS Object name=VW_GBC_15 Cost=925 Cardinality=1199 Bytes=73139
SORT GROUP BY Cost=925 Cardinality=1199 Bytes=100716
HASH JOIN Cost=924 Cardinality=1199 Bytes=100716
NESTED LOOPS
NESTED LOOPS Cost=181 Cardinality=1199 Bytes=80333
TABLE ACCESS BY INDEX ROWID Object owner=ODS Object name=INWARDSPOLICYDETAILS Cost=159 Cardinality=1199 Bytes=39567
INDEX RANGE SCAN Object owner=ODS Object name=IX_INWPOLDTLS_SYSCOMPANYBRANCH Cost=7 Cardinality=1199
INDEX UNIQUE SCAN Object owner=ODS Object name=PK_AVN_D_MASTERPOLICYDETAILS Cost=0 Cardinality=1
TABLE ACCESS BY INDEX ROWID Object owner=ODS Object name=AVN_D_MASTERPOLICYDETAILS Cost=1 Cardinality=1 Bytes=34
TABLE ACCESS FULL Object owner=ODS Object name=INWARDSPOLICYLOBMAPPING Cost=741 Cardinality=288498 Bytes=4904466
VIEW Object owner=SYS Object name=VW_GBF_16 Cost=4854 Cardinality=75507 Bytes=3850857
SORT GROUP BY Cost=4854 Cardinality=75507 Bytes=2340717
VIEW Object owner=ODS Cost=4207 Cardinality=75507 Bytes=2340717
SORT GROUP BY Cost=4207 Cardinality=75507 Bytes=1585647
PARTITION HASH ALL Cost=3713 Cardinality=75936 Bytes=1594656
TABLE ACCESS FULL Object owner=ODS Object name=AVN_F_TRANSACTIONS Cost=3713 Cardinality=75936 Bytes=1594656
Explain Plan(Only Query):_
SELECT STATEMENT, GOAL = ALL_ROWS Cost=62783 Cardinality=89964 Bytes=17632944
HASH JOIN OUTER Cost=62783 Cardinality=89964 Bytes=17632944
TABLE ACCESS FULL Object owner=ODS Object name=AVN_WRK_F_RENEWAL_TRANS_1ST Cost=138 Cardinality=89964 Bytes=2878848
VIEW Object owner=ODS Cost=60556 Cardinality=227882 Bytes=37372648
HASH GROUP BY Cost=60556 Cardinality=227882 Bytes=26434312
VIEW Object owner=SYS Object name=VW_DAG_1 Cost=54600 Cardinality=227882 Bytes=26434312
HASH GROUP BY Cost=54600 Cardinality=227882 Bytes=36005356
HASH JOIN OUTER Cost=46664 Cardinality=227882 Bytes=36005356
VIEW Object owner=SYS Cost=18270 Cardinality=227882 Bytes=16635386
HASH JOIN Cost=18270 Cardinality=227882 Bytes=32587126
HASH JOIN Cost=12147 Cardinality=34667 Bytes=2912028
HASH JOIN Cost=10076 Cardinality=34667 Bytes=2322689
TABLE ACCESS FULL Object owner=ODS Object name=AVN_D_MASTERPOLICYDETAILS Cost=137 Cardinality=34667 Bytes=1178678
TABLE ACCESS FULL Object owner=ODS Object name=INWARDSPOLICYDETAILS Cost=9934 Cardinality=820724 Bytes=27083892
TABLE ACCESS FULL Object owner=ODS Object name=INWARDSPOLICYLOBMAPPING Cost=741 Cardinality=866377 Bytes=14728409
VIEW Object owner=ODS Cost=5195 Cardinality=227882 Bytes=13445038
HASH GROUP BY Cost=5195 Cardinality=227882 Bytes=4785522
PARTITION HASH ALL Cost=3717 Cardinality=227882 Bytes=4785522
TABLE ACCESS FULL Object owner=ODS Object name=AVN_F_TRANSACTIONS Cost=3717 Cardinality=227882 Bytes=4785522
VIEW Object owner=ODS Cost=26427 Cardinality=227882 Bytes=19369970
HASH GROUP BY Cost=26427 Cardinality=227882 Bytes=18686324
VIEW Object owner=SYS Object name=VW_DAG_0 Cost=26427 Cardinality=227882 Bytes=18686324
HASH GROUP BY Cost=26427 Cardinality=227882 Bytes=25294902
HASH JOIN Cost=20687 Cardinality=227882 Bytes=25294902
VIEW Object owner=SYS Object name=VW_GBC_15 Cost=12826 Cardinality=34667 Bytes=2080020
HASH GROUP BY Cost=12826 Cardinality=34667 Bytes=2912028
HASH JOIN Cost=12147 Cardinality=34667 Bytes=2912028
HASH JOIN Cost=10076 Cardinality=34667 Bytes=2322689
TABLE ACCESS FULL Object owner=ODS Object name=AVN_D_MASTERPOLICYDETAILS Cost=137 Cardinality=34667 Bytes=1178678
TABLE ACCESS FULL Object owner=ODS Object name=INWARDSPOLICYDETAILS Cost=9934 Cardinality=820724 Bytes=27083892
TABLE ACCESS FULL Object owner=ODS Object name=INWARDSPOLICYLOBMAPPING Cost=741 Cardinality=866377 Bytes=14728409
VIEW Object owner=SYS Object name=VW_GBF_16 Cost=7059 Cardinality=227882 Bytes=11621982
HASH GROUP BY Cost=7059 Cardinality=227882 Bytes=6836460
VIEW Object owner=ODS Cost=5195 Cardinality=227882 Bytes=6836460
HASH GROUP BY Cost=5195 Cardinality=227882 Bytes=4785522
PARTITION HASH ALL Cost=3717 Cardinality=227882 Bytes=4785522
TABLE ACCESS FULL Object owner=ODS Object name=AVN_F_TRANSACTIONS Cost=3717 Cardinality=227882 Bytes=4785522

HTML Article performance issues in Adobe Viewer on iPad

I have created a HTML Article using DPS but when I come to view it on Adobe Viewer in iPad the content does not scroll smoothly and the content is cut off and cropped (the whole page is not displayed), it is very judery and struggles to render the HTML below 'the fold' so to speak.
I have tried both options for importing HTML into DPS and both have the same performance/lag isuues.
I have a video in my HTML that seemed to be causing an issue where the video streaming was struggling to be pulled through, so I have treid YouTube and Vimeo video streaming and the performance/display issue is not resolved. I then tried embbeding an mp4 directly using HTML5 to see if it was a connection/bandwidth issue and the problem still exists. However the videos do play, its just the fact that the container is cropped in half.
Sometimes the whole HTML article renders but then when you swipe back up the page it struggles to render the content above? Also then when you swipe back down the page the content is also cropped that was visible before?
I have reviewed every available discussion on the Adobe Community and other resources but all the fixes mentioned do not have any effect.
If anybody can assist or has been experiencing the same issues any advise would be welcome.
Oh, the HTML Article contains some JS too, it does function correctly but I was wondering if JS causes problems? Just a thought.

Well, I think I may have found the answer so I thought I would share with the Community incase anyone else experiences the same type of issues.
After testing another peice of HTML that also included video streaming and heavy JavaScript, I narrowed the issue down to my JS. I had two Nivo Slider Carousels that were the route of the performance issues.
The other test HTML Article scrolls smoothly and the video pulls in as intended, although once in a while there is a slight delay in the page scrolling up and down but this is hardly noticeable.
I hope this may be of some help to other's in the future?

RCA for Oracle RAC Performance Issue

Hi DBAs,
I have setup a 2 node Oracle RAC 10.2.0.3 on Linux 4.5 (64 bit) with 16 GB memory and 4 dual core CPUs each. The database is serving a web application but unfortunately the system is at its knees. The performance is terrible. The storage is a EMC SAN but ASM is not implemented with a fear to further degrade the performance or not to complicate the system further.
I am seeking the expert advises from some GURUs from this forums to formulate the action plan to do the root cause analysis to the system and database. Please advise me what tools I can use to gather the information about the Root Cause. AWR Report is not very helpful. The system stats with top, vmstat, iostat only show the high resource usage but difficult to find the reason. OEM has configured and very frequently report all kind of high wait events.
How I can use effectively find Network bottle necks (netstat command which need to be really helpful to understand).
How I can see the system I/O (iostats) which can provide me some useful information. I don't understand what sould be the baseline or optimal values to compare the I/O activities.
I am seeking help and advised to diagnose the issue. I also want to represent this issue as a case study.
Thanks
-Samar-

First of all, RAC is mainly suited for OLTP applications.
Secondly, if your application is unscalable (it doesn't use bind variables and no SQL statements have been tuned and/or it has been ported from Sukkelserver 200<whatever>) running it against RAC will make things worse.
Thirdly: RAC uses a chatty Interconnect. If you didn't configure the Interconnect properly,and/or are using slow Network cards (1 Gb is mandatory), and/or you are not using a 9k MTU on your 1 Gb NIC, this again will make things worse.
You can't install RAC 'out of the box'. It won't perform! PERIOD.
Fourthly: you might suffer from your 'application' connecting and disconnecting for every individual SQL statement and/or commit every individual INSERT or UPDATE.
You need to address this.
Using ADDM and/or AWR is compulsory for analysing the problem, and/or having read Cary Millsaps book on Optimizing Oracle performance is compulsory.
You won't come anywhere without AWR and OS statistics will not provide any clue.
Because, paraphrasing William Jefferson Clinton, former president of the US of A:
It's the application, stupid.
99 out of 100 cases. Trust me. All developers I know currently are 100 percent clueless.
That said, if you can't be bothered to post the top 5 AWR events, and you aren't up to using AWR reports, maybe you should hire a consultant who can.
Regards,
Sybrand Bakker
Senior Oracle DBA

View's In Oracle - Performance Issues -some doubts

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