Oracle Database Slow Perfomance

Hi Dear,
We are using Oracle9i Enterprise Edition Release 9.2.0.1.0 - Production
Operating System Micsoft Window 2000 5.00.2195 With Service Pack 4.and conneted users max 70 all time. So we are facing slow database perfomance. Kindly resolve my problem with advance thanks
System configuration as below
System : Dell PowerEdge 1800
Processor : 3.00 GHZ
Ram : 2.00 GB
Cordial Regrds
Raheem

We are using below init file with name "init.ora.1122005225338"
# Copyright (c) 1991, 2001, 2002 by Oracle Corporation
# Cache and I/O
db_block_size=16384
db_cache_size=50331648
db_file_multiblock_read_count=32
# Cursors and Library Cache
open_cursors=600
# Database Identification
db_domain=uma
db_name=orauma
# Diagnostics and Statistics
background_dump_dest=D:\oracle\admin\orauma\bdump
core_dump_dest=D:\oracle\admin\orauma\cdump
timed_statistics=TRUE
user_dump_dest=D:\oracle\admin\orauma\udump
# File Configuration
control_files=("D:\oracle\oradata\orauma\CONTROL01.CTL", "D:\oracle\oradata\orauma\CONTROL02.CTL", "D:\oracle\oradata\orauma\CONTROL03.CTL")
# Instance Identification
instance_name=orauma
# Job Queues
job_queue_processes=10
# MTS
dispatchers="(PROTOCOL=TCP) (SERVICE=oraumaXDB)"
# Miscellaneous
aq_tm_processes=1
compatible=9.2.0.0.0
# Optimizer
hash_join_enabled=TRUE
query_rewrite_enabled=FALSE
star_transformation_enabled=FALSE
# Pools
java_pool_size=67108864
large_pool_size=8388608
shared_pool_size=50331648
# Processes and Sessions
processes=200
# Redo Log and Recovery
fast_start_mttr_target=300
# Security and Auditing
remote_login_passwordfile=EXCLUSIVE
# Sort, Hash Joins, Bitmap Indexes
pga_aggregate_target=25165824
sort_area_size=524288
# System Managed Undo and Rollback Segments
undo_management=AUTO
undo_retention=10800
undo_tablespace=UNDOTBS1

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Hi all:
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NESTED LOOPS ()                    9458
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Thanks
Hassan

I would say ..gather stats on 9i/10gfor the required table and indexes , then post the expalin plan.
--Girish

Slow Problems with Oracle Forms 10g and Oracle Database 11g

Hi, I wonder if there is a compatibility problem between Version 10.1.2.0.2 32 Oracle Forms and Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production. This is because my application runs correctly on a version of Oracle Database 10g, and when we migrated the database to an Oracle Database 11g, slowness problems came out.
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We have the same issue happening with our custom forms and with some of the standard forms in EBSO. So far we have found that the form invoking a view causes ridiculous slowness in opening the form (40 mins). Using a table access has shortened the open time significantly. At this time Oracle DBAs at OOD have no clear idea why it is happening.
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Database slow; How to check the Oracle query timings

Hi,
I have a quick question regarding a troubleshooting iam currently working on.
We have a J2EE application runnig on WLS 81 SP3.
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- Saish

&, &&, and @s causing ORACLE Database Project issues And SLOW Run

Hello I am encountering an issue while "Run"ing functions/sp/packages from an ORACLE DATABASE PROJECT.
We are supporting a legacy application that utilizes HTP.PRINT. We decided that it would be nice to have it as an Oracle Database Project but when we save the file it is croaking at us.
We are using
ODTwithODAC1110720
Visual Studio 2008
Oracle 10g r2
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DROP FUNCTION FUNCTION1;
CREATE FUNCTION FUNCTION1 (
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Connected.
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If I go ahead and hit OK (in a new unlocked file)
SP2-0310: unable to open file "media.sql"
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new   5: HTP.PRINT ('      if (popupStatus == 1 ==false) {');
**/You will notice that when the function is created it just skips the & and @s
FUNCTION FUNCTION1 (
PARAM1 IN NUMBER) RETURN NUMBER IS
BEGIN
HTP.PRINT ('    if (popupStatus == 1 ==false) {');
         htp.print('
<style>
}   etc etc etc   ');
RETURN PARAM1;
END FUNCTION1;and just a little insult to injury on this, each "run" takes upwards to 20-25 seconds from Visual studio (this is a deal breaker for us to use the tool -- when SQL Developer takes mere moments) -- is there a configuration setting awry?
So I guess the questions are these (sorry for the ramble)
1) How, in the VS 2008 IDE, can we accommdate & and && and @s without escaping/workarounds? (these work fine in developer)
a) I have noticed that the escape character work around is ONE way ... thus if I have the package body in the Oracle Database Project, add "set escape \ " then escape all of my & and && and @s it works. but... the code is saved in Oracle without the escape characters (understandable) but if it changes in Oracle then I push the changes down I lose all of my escape characters.
2) Why does each RUN take so long? working in developer & even the Server Explorer edited function are almost instantaneous.
-- I want to add, during my escape character tests EACH RUN took upwards to 30-45 seconds, so for 4 small simple test cases it was approaching 2 minutes of just save time...
so far these two shortcomings are barrier for our company to utilize these features (it's hard to try to sell the dept. on anything that doesn't handle escapes well AND -- the big AND -- takes entirely too long to save). any advise?
thnx
Edited by: tanging on Jul 1, 2010 4:47 AM

we can just set the escape character and it works fine,
set escape '~'
create or replace ....when/if we have to pull down from production level we'll have to be mindful to change & and @s to have a preceding escape character (and add the set escape to the top) --> which is a step back from SQL Developer which handles this flawlessly.
now the timing -- I believe it to be a timing issue on our network (therefore I've wasted your time). We have a default shared drive that is anything but speedy and our "default" homes in Visual Studio pointed to the shared drive. While the project/solution were on our local drives - the temp drive was the slow default. Changing that locally seems to have made the timing issue go away. (although on the first save of the body spec after the change and reboot it took 35 seconds but on subsequent runs it Ran in acceptable time limits).

What is slower - lan network socket or oracle database

What is generally slower?
Data transference via socket on a network connection on a lan line or inserting data into an oracle database via an Oracle Prepared Statement with a batch size of let�s say 500?

Maybe this will clear it up: Oracle will be slightly
slower. The transactions are occuring over the
network anyway. So the rate can only be as good as
the network itself. Presumably, the additional
overhead DML imposes will make Oracle slightly slower
than raw network traffic (the prototypical example
would be reading a PDF from a BLOB and piping it back
through middleware to a client).In normal configurations, what Saish says is true, but...
Oracle can also be configured to accept database connections via inter-process communication (IPC), at least on many OSes; in this configuration, the application MUST reside on the database server itself, and the application must use Oracle's OCI driver, not the type 4 thin driver. Then, the application and Oracle use in-memory communication. Obviously, this isn't for everybody and can get very expensive when you scale out.

Slow startup of oracle database instance

Hi,
It take about 7 minutes to start an oracle database on a vmware linux machine.
On the host system, the same database take less than one minute to startup.
Hardware : hp proliant dl380 g4 (1 intel Xion 3.2), 6 gb of memory (3.9 for vritual machine)
OS : Redhat linux AS 3.0 (both on host machine and vmware machine)
vmware : 3.2 GSX
Oracle : 10.1.0.3 (both on host and vm machine)
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Andre

On the host machine a copy of the database takes less than a one minute to startup.Well if you have (as Andre) "same" databases on guest and on host, I can just repeat:
Reconfigure vmware settings, search in help everything about let's say "performance of guest OS"!
It's also exists vmware-Forum with bunch of usefull information.
This is not Oracle related question.
Cheers!

Memory issue in oracle database 11g ...

Hi All,
I have installed oracle11gR2 on Linux (CentOS 5.5)... SErver has good amount of HDD - 669G and 16G RAM. I have two database running on this server.
I am getting out of memory error and end user also complains about dB is very slow... I have configured memory and SGA parameter in both the database and total allocation of memory and SGA maximum size 7.5G. So I assuemd that oracle database used RAM from whatever we configured in memory maximum parameter , in my case I have allocated upto 7.5G but when I run top command I can see almost 16G is in used and only few mbs left...
can anyone suggest me my assumption about memory allcoation to database is correct or not ? or when I allocated memory to database (using memory max parameter) then why top showing all memory in used. This is database server and no other process is running except oracle.
Thanks in advance...

Just enable AMM as below and forget the nitty gritties of setting lots of memory parameters ;-D
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Using AE(htmldb 2.0) as for reporting tool for other oracle databases.

Maybe I was mistaken, but when I first saw the HTMLDB demo's I saw this as a slick way to build a browser based reporting tool for the masses for quasi-ad-hoc reporting on some of our larger databases that currently have limited reporting capability, and also as a possible replacement for the many MSAccess applets we have.
I just got 2.0 installed and working on a 9i database and went through the basic tutorials, but I can't find much info on how to connect to other oracle databases.
Are my options as follows?:
create dblinks from the local database that houses htmldb to all the other databases?
or
install htmldb schemas on each database I want to access from htmldb?
or
I'll keep looking, but if any of you have any pointers or know of a tutorial that explains the best way to do this it would be greatly appreciated!
tia

As for question 1, yep, that's what I mean. Example:
In a schema in the App Express instance, create a user called "APP1_USER", and then
create view app1_user.people as select * from people@link_user@remotedb
As for the next question, using the built-in insert/update/delete processes will give you
ORA-01461: can bind a LONG value only for insert into a LONG column
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We address this problem by creating pl/sql APIs for DML, and then writing our own insert/update processes. Slows us down a little, but even with that, App Express remains a productive choice for us.
Another weird problem: auto-row fetch (built-in to HTML DB) doesn't work over db links when you have two columns for a primary key. Many ways around this, e.g. create sequence-populated primary key, create a view with single column that concatenates primary key column values (key1|key2)
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Performance Issues on Oracle Database Lite 10.3.0.3

Hello,
we have a big problem with one of our customers. He uses Oracle Database Lite in the standalone version. There are about 600 clients running a project with about 20 Publication Items. The customer works in the logistics field, so the Main time where nearly all clients want to sync and get their tours is from 02 AM to 05 AM, so that is the time with the most traffic.
Everything went well before last week. Suddenly the compose cycle needs (at least between that hours) about ten times longer than before. Normally we had about 40 - 80 seconds, now we have about 300 - 500 average with max values from over 1200 seconds.
Therefore we have a lot of conflicts and Disconnects on the clients. It is sometimes that bad, that nearly no client can sync successfully.
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If I have to give more Info about somewhat please feel free to ask, I will give it as fast as possible.
Thanks in advance
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Hey,
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Let me summarize the situation since my las post:
We have days (nights) where everything goes quite well. Mainly that is thrusday and friday. But on the other hand, there are days where everything really is a mess.
The mgp caycles increase and when you look to mobile manager you see 70 clients syncing very very slowly (about 300 - 600 seconds) for just a little bit of data. Then we get the disonnects and the messages in the err.log.
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Like postes earlier, there are 500 clients syncing against a standalone mobile server.
We just couldnt figure out, why the mgp times somehow and sometimes increase that much, that there are these problems.
First we thought, that they sync newly over wireless (GPRS or Edge) and that syncing is that slowly, that everything goes down, but arent sure. Is this possible because of the architecture of the Mobile Server? That a very slow network can slow down the mgps and that does timeouts and all the other stuff?
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Sun T2 chips vs SPARC64 VI/VII chips for Oracle database servers

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We found the attached oracle metalink document (ref 781763.1) <<Sun_T2_slow_for Oracle_DB.html>>
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Therefore we are looking at new servers to run other similar large Oracle apps and appear to have a number of choices within a similar price range
Notably
M3000 - 1 x SPARC VII CPU (quad core procesor)
M4000 - 2 x SPARC VI CPU (dual core processor)
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T5240 - 2 x T2 CPU (8 core processor)
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We tested a T5210 as a database server (running Ingres, not Oracle) and our batch performance was roughly equivalent to a dual CPU UltraSPARC III V480. Our guess is that the performance hit came from having a relatively small cache shared across so many threads. Like you, we're looking at using the M3000 or M4000 in preference.

Oracle Database 10g Express Edition for Linux x86

Hi all,
I try to download Oracle Database 10g Express Edition (Universal) at
http://www.oracle.com/technology/software/products/database/xe/htdocs/102xelinsoft.html
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Thanks a lot.
Kind Regards

Ok, in fact it's very slow..
Thanks a lot!
I'm still not able to download.. I'will try until I get it.
Regards,
Lavinia

Pagination support for non-Oracle databases?

Hi,
I just read this thread (Pagination Support on pagination support. Is there any way to get pagination with non-Oracle databases? We are using an IBM iSeries / AS/400 DB2 database right now, and we're planning to use some local lightweight database in the near future as well (probably Cloudscape/Derby or "IBM Everyplace database".)
We currently use code like this:
String sql = "SELECT art FROM Artikel art" +
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Query q = em.createQuery(sql);
q.setFirstResult(firstResult);
q.setMaxResults(maxResults);If I look in the TopLink logs, I see queries like this:
SELECT ARTNR, ARALT, ARAFJ, ARXII, ARAVJ, ARXIV, ARANJ, AHGCD, ARNVJ, ARCRJ, ARARK, ARFKJ, ARTNK, ARGP1, ASGCD, ARGP2, ARPR1, ARGP3, ARPR2, AREX1, ARPR3, AREX2, ARPR4, AREX3, ARASA, ARINA, ASSCD, ARIA1, ARBAN, ARIN1, ARBAV, ARIA2, ARBAK, ARIN2, ARCES, ARIA3, ARCDT, ARIN3, ARCRE, ARIA4, ARCWK, ARIN4, ARHBH, ARIA5, ARDFA, ARIN5, ARDFG, ARIA6, ARDOS, ARIN6, AREPW, ARINN, ARFOD, ARIAS, ARFOE, ARINS, ARFOF, ARNAB, ARFOI, ARNIB, ARFON, ARNIA, ARFOS, ARNN1, ARFTA, ARNA2, ARVIV, ARNO2, ARGAP, ARNN3, ARGPT, ARNA4, ARGPD, ARNO4, ARGPA, ARNN5, ARGPO, ARNA6, ARHIS, ARNN6, ARISP, ARNIO, ARKHM, ARNNS, MAGCD, AROVJ, MTGCD, ARPL1, ARMXM, ARPL2, MRKCD, ARPL3, ARMVR, ARVKJ, ARMIM, ARV12, ARMDT, ARVVJ, ARMTE, AR#VR, ARMTU, ARZLS, ARMTM, ARIAT, ARMWK, ARAVS, MPCCD, ARNVS, ARBTW, ARFJS, ARXI2, ARG2S, ARXI3, ARE1S, ARXI4, ARE3S, ARXI6, ARIB1, ARXI1, ARIB2, ARXI5, ARIB3, AROPI, ARIB4, ARPRV, ARIB5, SZGCD, ARIB6, ARSPC, ARINO, ARSMF, ARIOS, VEAAN, ARNIS, ARSYN, ARNO1, ARVR1, ARNA3, ARV1S, ARNN4, ARVR2, ARNO5, ARV2S, ARNIN, ARVR3, ARNOS, ARV3S, ARP1S, ARTFA, ARP3S, ARTFG, ARS12, ARUVC, ARZLD, ARUCW, ARAJS, ARBKV, ARCJS, ARVVI, ARG3S, ARVVP, ARINB, VPOCD, ARIO2, VPECD, ARIO4, ARVIH, ARIO6, ARVHG, ARNBS, ARVRW, ARNN2, ARVPR, ARNA5, ARVVR, ARNAS, ARVVS, ARP2S, ARVV1, ARSVV, ARZK1, ARNJS, ARNA1, ARNO3, ARIO1, ARNO6, ARIO5, AROJS, ARE2S, ARVJS, ARIBS, ARIAD, ARIO3, ARG1S FROM ART WHERE ((((ARUVC = 'N') AND (ARHIS = 'N')) AND (ASGCD = 7)) AND (AHGCD = 15)) ORDER BY ARTNR ASC
(Yeah, I know we have too much columns in the table...)
So, no pagination in the query. As you can see, we have a mechanism in place to dynamically generate a where clause. This is because the user can set filters. The problem is, if our user sets a filter that causes the result set to be significantly smaller, the performance is way better than when he sets no filter at all. We suppose this is because the whole result set is sent to TopLink, regardless of the values of firstResult and maxResults.
We are using TopLink Essentials 2.1-10, by the way.
Message was edited by:
Bart Kummel

Hi all,
I'm trying to subclass <tt>DatabasePlatform</tt> to add pagination support for the AS/400 DB2 database of my customer. To be fair, it is not going very well so far.
The first problem is, the query Chris found by googling (Re: Pagination support for non-Oracle databases?), does not work for AS/400s version of DB2. In fact, although it is called "DB2", the database on the AS/400 system is a whole other database than the "normal" DB2 database that runs on Windows and *nix. The AS/400 DB2 simply does not have a "ROW_NEXT" function.
Another option would be to use the <b>row_number() over()</b> mehtod. But, as can be read here, this function is only available from version V5R4 of OS/400. And guess what? We're stuck on V5R3 at this client. (We cannot upgrade, because there's an application in use that's written in Delphi and IBM dropped the Delphi binding from V5R4...)
So I pretty much ran out of options. On the mailing list I linked to above, someone mentions the option to make a sort of stored procedure that generates a row count number. An example of how to do this can be found here. I implemented it, and ended up with this code:
package com.myclientsname.persistence;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import org.eclipse.persistence.expressions.ExpressionBuilder;
import org.eclipse.persistence.internal.databaseaccess.DatabaseCall;
import org.eclipse.persistence.internal.expressions.ExpressionSQLPrinter;
import org.eclipse.persistence.internal.expressions.SQLSelectStatement;
import org.eclipse.persistence.internal.sessions.AbstractSession;
import org.eclipse.persistence.logging.SessionLog;
import org.eclipse.persistence.platform.database.DatabasePlatform;
import org.eclipse.persistence.sessions.SessionProfiler;
public class AS400Platform extends DatabasePlatform {
    private static final long serialVersionUID = 0L;
    public AS400Platform(){
         super();
         super.setShouldBindAllParameters(false);
    public void printSQLSelectStatement(DatabaseCall call, ExpressionSQLPrinter printer, SQLSelectStatement statement) {
        int max = 0;
        int firstRow = 0;
        if (statement.getQuery()!=null){
            max = statement.getQuery().getMaxRows();
            firstRow = statement.getQuery().getFirstResult();
        if ( !(max>0) && !(firstRow>0) ){
            super.printSQLSelectStatement(call, printer,statement);
            return;
        } else {
            statement.setUseUniqueFieldAliases(true);
            ExpressionBuilder builder = new ExpressionBuilder();
            statement.addField(builder.getField("COUNTER() AS CNTR"));
            printer.printString("SELECT * FROM (");
            call.setFields(statement.printSQL(printer));
            printer.printString(") AS R WHERE R.CNTR >= ");
            printer.printParameter(DatabaseCall.FIRSTRESULT_FIELD);
            if ( max > 0 ){
                // Use of binding parameters is not allowed here, so use
                // String concatenation instead...
                printer.printString(" FETCH FIRST " + max + " ROWS ONLY");
        call.setIgnoreFirstRowMaxResultsSettings(true);
    public boolean wasFailureCommunicationBased(SQLException exception, Connection connection, AbstractSession sessionForProfile){
        if (connection == null || this.pingSQL == null){
            //Without a connection we are unable to determine what caused the error so return false.
            //The only case where connection will be null should be External Connection Pooling so
            //returning false is ok as there is no connection management requirement
                //If there is no ping sql then we can not perform the ping.
            return false;
        PreparedStatement statement = null;
        try{
            sessionForProfile.startOperationProfile(SessionProfiler.ConnectionPing);
            if (sessionForProfile.shouldLog(SessionLog.FINE, SessionLog.SQL)) {// Avoid printing if no logging required.
                 sessionForProfile.log(SessionLog.FINE, SessionLog.SQL, getPingSQL(), (Object[])null, null, false);
            statement = connection.prepareStatement(getPingSQL());
            ResultSet result = statement.executeQuery();
            result.close();
            statement.close();
        }catch (SQLException ex){
            try{
                // Had to add this check because of NullPointerExceptions
                // (maybe a bug?)
                if(statement != null){
                    //try to close statement again in case the query or result.close() caused an exception.
                    statement.close();
            } catch (SQLException exception2) {
                //ignore;
            return true;
        }finally{
            sessionForProfile.endOperationProfile(SessionProfiler.ConnectionPing);
        return false;
}(As you can see, I had to override the <tt>wasFailureCommunicationBased()</tt> method as well, due to some unexpected NPE's. (A bug, perhaps?))
This code does work. However, the performance is not very well. The first page comes relatively fast, but as you browse further in the table, each page comes slower. I assume this is because the counter() method has to be evaluated for each row in the table.
I have to get the performance better and constant. Does anyone have an idea how to optimize this further?
Best regards,
Bart Kummel

Implementing SQL Plan Management on Oracle Database 11.2.0.2

Environment:
Oracle Linux 5 update 10 (UEK)
Oracle GI 11.2.0.2.0 (Oracle ASM 11.2.0.2)
Oracle Database 11.2.0.2.0 Enterprise Edition with RAC option (3 nodes)
No PSU applied/CPU July 2013 applied to RDBMS
Database servicing Siebel CRM 8.1.1.1 Application that uses bind peeking.
Siebel CRM soon to be version 8.1.1.11
There are a few bugs for SQL Plan Management (SPM) on 11.2.0.2 (see below). The slowness and non-peeked binds issues seem very problematic. I've seen a few bloggers recommend to not use SPM unless your at Oracle Database 12c. Several of the bugs seemed to be fixed in 11.2.0.3 but we don't have any plans to move to 11.2.0.3 since we'll most likely be at 12.1.0.x in 7 months. Any recommendation from the community on whether I should capture and use SQL Plan Management with 11.2.0.2? Why, why not? If there's other relevant information needed, let me know.
Bug 9910484 - SQL Plan Management Capture uses excessive space in SYSAUX (Doc ID 9910484.8)
Affects:
Product (Component) Oracle Server (Rdbms)
Range of versions believed to be affected Versions >= 11.1 but BELOW 12.1
Versions confirmed as being affected
•11.2.0.2
•11.2.0.1
•11.1.0.7
Platforms affected Generic (all / most platforms affected)
Fixed:
•12.1.0.1 (Base Release)
•11.2.0.3 (Server Patch Set)
•11.2.0.2 Patch 4 on Windows Platforms
•11.1.0.7 Patch 41 on Windows Platforms
Bug 11719151 - SQL Plan Management capture causes slowness (Doc ID 11719151.8)
Affects:
Product (Component) Oracle Server (Rdbms)
Range of versions believed to be affected Versions >= 11.2.0.2 but BELOW 12.1
Versions confirmed as being affected
•11.2.0.2
Platforms affected Generic (all / most platforms affected)
Fixed:
•12.1.0.1 (Base Release)
•11.2.0.3 (Server Patch Set)
•11.2.0.2 Patch 22 on Windows Platforms
Bug 9942454 - DBMS_SPM.LOAD_PLANS_FROM_SQLSET gets XML parsing error (Doc ID 9942454.8)
Affects:
Product (Component) Oracle Server (Rdbms)
Range of versions believed to be affected Versions BELOW 12.1
Versions confirmed as being affected
•11.2.0.2
•11.2.0.1
•11.1.0.7
Platforms affected Generic (all / most platforms affected)
Fixed:
•12.1.0.1 (Base Release)
•11.2.0.3 (Server Patch Set)
Bug 12732879 - Execution Plan of Query with non-peeked binds is not reproducible (Doc ID 12732879.8)
Affects:
Product (Component) Oracle Server (Rdbms)
Range of versions believed to be affected Versions >= 9.2 but BELOW 12.1
Versions confirmed as being affected
•11.2.0.3
•11.2.0.2
•11.1.0.7
Platforms affected Generic (all / most platforms affected)
Fixed:
•12.1.0.1 (Base Release)
•11.2.0.4 (Future Patch Set)
Bug 11687175 - High DFS lock handle waits in the database with SPM if FIXED_DATE is set (Doc ID 11687175.8)
Affects:
Product (Component) Oracle Server (Rdbms)
Range of versions believed to be affected Versions >= 11 but BELOW 12.1
Versions confirmed as being affected
11.2.0.2
11.2.0.1
11.1.0.7
11.1.0.6
Platforms affected Generic (all / most platforms affected)
Fixed:
12.1.0.1 (Base Release)
11.2.0.3 (Server Patch Set)
Bug 13384234 ORA-29981 with select query with database Change notification
Affects:
Product (Component) Oracle Server (Rdbms)
Range of versions believed to be affected Versions BELOW 12.1
Versions confirmed as being affected
11.2.0.2
Platforms affected Generic (all / most platforms affected)
Fixed:
11.2.0.4 (Future Patch Set)
Thanks so much.

See these MOS Docs
11.2.0.2 Patch Set - Availability and Known Issues (Doc ID 1179474.1)
Important Changes to Oracle Database Patch Sets Starting With 11.2.0.2 (Doc ID 1189783.1)
HTH
Srini

What are the differences between the following Oracle database views?

What are the differences between the following Oracle database views(or function)? Can they be instead of each other? Can all of them be used to pull out the execution plan from the library cache?
V$SQL_PLAN
DBA_HIST_SQL_PLAN
dbms_xplan.display_cursor function

junez wrote:
What are the differences between the following Oracle database views(or function)? Can they be instead of each other? Can all of them be used to pull out the execution plan from the library cache?
V$SQL_PLAN
DBA_HIST_SQL_PLAN
dbms_xplan.display_cursor functionV$SQL_PLAN-this is dynamic perfomance view which contain execution plan information for each child cursor loaded in the library cache.
DBA_HIST_SQL_PLAN- data dictionary view also contain execution plan information for each child cursor bun in workload repository.Actually this view captures information from V$SQL_PLAN and is used with the DBA_HIST_SQLSTAT .
dbms_xplan.display_cursor - function displays explain plan of any cursor loaded in the cursor cache. See more information below links:
http://youngcow.net/doc/oracle10g/server.102/b14237/dynviews_2120.htm
http://download.oracle.com/docs/cd/B14117_01/server.101/b10755/statviews_2154.htm
http://download.oracle.com/docs/cd/B12037_01/appdev.101/b10802/d_xplan.htm#998179

Oracle Database Slow Perfomance

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