DB Performance Is Slow Using Oracle 11gR2 On Windows Server
May 25, 2013
I am using 11gR2 on windows server. This is the query that runs many times a day and effect badly the performance of database. I don't have much idea about this query.
SELECT TO_CHAR(current_timestamp AT TIME ZONE 'GMT', 'YYYY-MM-DD HH24:MI:SS TZD') AS curr_timestamp, COUNT(username) AS failed_count
FROM sys.dba_audit_session
WHERE returncode != 0 AND TO_CHAR(timestamp, 'YYYY-MM-DD HH24:MI:SS') >= TO_CHAR(current_timestamp - TO_DSINTERVAL('0 0:30:00'), 'YYYY-MM-DD HH24:MI:SS')
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Jun 18, 2012
I have an Oracle database (9.2.0.7) installed on a HP-UX server.When trying to access this database from another HP-UX or Linux server, connection is fine. But when trying to connect from a Windows based client, connection is very slow (almost 1 minute to return the result of a 'select count(*)' like query, which is immediate from the Linux client).
Here are some facts I can add :
- Clients and servers are on the same network segment (it is not a network matter)
- No matter which client version I use, there no difference
- I tried to know what happens on the Oracle server when performing my sample query using tusc command : the result is that the server is performing exactly the same actions when sending my query from a Linux client or a Windows client
- The only relevant difference seems to be the client OS
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Aug 27, 2013
we are busy updating one databasee from a windows platform 2003 oracle 10G to a linux and oracle 11r2
We exported/imported the data and it looks ok Explain plans look the same . but our heavy batches are twice slower than on the windows box ,the two top events are disk related, sequential and scattered reads there are 90% of the time of the batch job , i read some white paper and found that using ASM can be bad in some cases the same with the linux for this particular kind of scattered reads , i was just wondering if just changing the SGA to 10GB instead of 4GB to get more cache and speedup the things .
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Feb 9, 2012
We are having major differences in performance when accessing an Oracle 11gR2 database from two different environments.
I won't sadden you with the gory details of the full application but I will use an indicative example of our problem.
We have SQL Developer in both environments. In each of these SQL Developer instances is a defined a connection to the same database on another machine. So there is the PC looking at a database and a virtual instance looking at the same database.
Selecting the '+' sign next to 'tables' for that connection, on the PC the list of four tables comes back in 4 seconds but on the virtual instance the list of the same four tables comes back in 1 minute and 50 seconds.
This sort of timing issue is repeatable for all accesses to the Oracle database on the third machine.
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Oct 10, 2012
My problem is when trying to use oradmin.exe. It doesn't exists apparently. I have Database Creation Assistant and Net Creation Assistant, I can open and run sqlplux.exe and run sql commands, but oradmin.exe seems to be missing.
This is a new install of Oracle EE 11gR2 on Windows 7 Pro.
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Apr 15, 2012
I want to install Oracle EE 11gR2 on my Windows 7 Professional 64-bit laptop. Installed memory is 8GB.I need to install 32-bit server since Oracle Warehouse Builder will not run on a 64-bit o/s. Further, I use Toad 9.7.2 which will only recognise client 32-bit.
I had a few failed attempts, especially when the database was being created with the ORA-12560: TNS:protocol adapter error,
So here's what I did:
Changed C:WindowsSystem32driversetchosts so that it contains two lines 127.0.0.1 localhost & ::1 localhost
Changed properties of setup.exe in the installation directory to be Windows XP SP2 compatible and run as administrator
Selected "install database software only" (so I could figure out at what step the installation fails)
Selected "single instance"
Selected "Enterprise Edition"
Selected oracle base "c:app" (instead of default location c:appd_seng)
Copy of files was completed successfully, log file was created in c:program files(x86)oracleinventorylogs & registry entries were added to "HKEY_LOCAL_MACHINESOFTWAREWow6432NodeORACLE" (with keys KEY_OraDb11g_home1, ODP.NET & OracleMTSRecoveryService), and the following services were created:
OracleMTSRecoveryService: Started/Automatic
OracleOraDb11g_home1ClrAgent: Not started/Manual
OracleRemExecService: Started/Disabled
There are no listener.ora & tnsnames.ora yet. Sqlnet.ora is created with the line SQLNET.AUTHENTICATION_SERVICES = (NTS)
Now I went to Start, All Programs, Oracle - OraDb11g_home1, Configuration and Migration Tools, right clicked on "Net Configuration Assistant" and changed the properties to be Windows XP SP2 compatible and run as administrator and ran it. I selected "Listener Configuration", added a listener called LISTENER, TCP protocol, port 1521 and finished. A service called "OracleOraDb11g_home1TNSListener" was created and started in automatic mode. The PATH was updated and listener.ora was created with the lines:
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(SID_NAME = CLRExtProc)
(ORACLE_HOME = C:appproduct11.2.0dbhome_1)
[code]...
Tnsnames.ora is also creaed with the contents:
ORACLR_CONNECTION_DATA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))
)
(CONNECT_DATA =
(SID = CLRExtProc)
(PRESENTATION = RO)
At the command prompt, lsnrctl.status shows:
LSNRCTL for 32-bit Windows: Version 11.2.0.1.0 - Production on 15-APR-2012 12:42
:19
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=DSG-HP6555b)(PORT=1521))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for 32-bit Windows: Version 11.2.0.1.0 - Produ
ction
Start Date 15-APR-2012 12:37:54
[code]...
At the command prompt, lsnrctl.services shows: LSNRCTL for 32-bit Windows: Version 11.2.0.1.0 - Production on 15-APR-2012 12:43:15
Copyright (c) 1991, 2010, Oracle. All rights reserved.
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=DSG-HP6555b)(PORT=1521))
)
Services Summary...
Service "CLRExtProc" has 1 instance(s).
Instance "CLRExtProc", status UNKNOWN, has 1 handler(s) for this service...
Handler(s):
"DEDICATED" established:0 refused:0
LOCAL SERVER
The command completed successfully Now I went to start, all programs, Oracle - OraDb11g_home1, Configuration and Migration Tools, right clicked on "Database Configuration Assistant" and changed the properties to be Windows XP SP2 compatible and run as administrator and ran it.
I chose to create a databaseGeneral purpose Global database name ORCL SID ORCL Chose "Configure Enterprise Manager" & "Configure Database Control for local management" and disabled "Automatic maintenance tasks" Used the same password for all accounts
Selected storage type "File System" & "Use Database File Locations from Template" Unchecked Flash Recovery & Archiving Selected "Sample Schemas", "Typical" memory size (1228MB), "Use Automatic Memory Management" Left sizing/character sets/connection mode as default, and Selected "Generate Database Creation Scripts" in C:appadminORCLscripts (if I choose to Create Database, it fails with TNS Protocol Adapter Error).
I now open ORCL.bat in an editor, go to command prompt, create the directories as per the file, set ORACLE_SID=ORCL & path.
Running C:appproduct11.2.0dbhome_1inoradim.exe -new -sid ORCL -startmode manual -spfile gives a message "instance created" & services "OracleJobSchedulerORCL", "OracleVssWriterORCL" (started) & "OracleServiceORCL" (started) are created.
The next step C:appproduct11.2.0dbhome_1inoradim.exe -edit -sid ORCL -startmode auto -srvcstart system give an error "Unable to start service, OS Error 1056" (probably implies services already running), nothing is present in the windows alert logs about this. If I stop the service OracleVssWriterORCL, then this command completes, although no messages are returned.
The next step in the batch file starts sqplus /nolog and calls ORCL.sql.
ORCL.sql accepts passwords for sys, system, sysman & dbsnmp. It then executes host C:appproduct11.2.0dbhome_1inorapwd.exe file=C:appproduct11.2.0dbhome_1databasePWDORCL.ora force=y, which prompts me for the password for sys.
ORCL.sql then calls CloneRmanRestore.sql, which then tries to run connect "SYS"/"&&sysPassword" as SYSDBA
This is when I get the error ORA-12560: TNS:protocol adapter error, which has been haunting me for days.
My gut feel is that the database creation step at sqlplus is unable to recognise the listener...or probably it does not recognise the modified registry location (with Wow6432Node), the file oracle.key in C:appproduct11.2.0dbhome_1BIN shows the string SOFTWAREORACLEKEY_OraDb11g_home1.
I then changed oracle.key to point to SOFTWAREWow6432NodeORACLEKEY_OraDb11g_home1, restarted the listener and ORCL service, but connecting as sys returns the same error.
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Jul 4, 2011
Few days ago, My database server no access to StorageBox then I reboot it then after works fine. But, know DB import process is too slow. Before 100GB DB import process completed within 10 hours when server normal running. Now 2 day working, but not complete
How to investigate this issue? Maybe I miss increase some parameters on the Server or Oracle?
Here is my server brief info:
RAM is 16GB,
SWAP size is 16GB,
CPU 12 cores
SQL> show sga;
Total System Global Area 4294967296 bytes
Fixed Size 1984144 bytes
Variable Size 369105264 bytes
Database Buffers 3909091328 bytes
Redo Buffers 14786560 bytes
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Aug 9, 2010
I am trying to install oracle 11gR2 64-bit on windows XP 64-bit Operating System, after the completion of the steps where I have to enter the path for the ORACLE BASE and other parameters when I click next and then Finish, I receive an error, you can check in the attachment.
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Mar 28, 2012
I am trying to install Oracle 11g R2 on Windows 7 professional at the time of database creation they give error.
ORA-12638:Credential retrival failed.
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Jun 22, 2012
Question: to migrate from oracle 10gR2 in Windows to oracle 11gR2 in Linux . Steps are:
1. need to expdp all schemas/users from oracle 10gR2 in Windows,
2. then impdp each schema/user into oracle 10gR2 in Linux first,
3. then upgrade the oracle 10gR2 in Linux to oracle 11gR2 in Linux ?
4. Do I need to pre-create all the same tablespaces first in oracle 10gR2 in Linux ?
Is it correct ? or I can migrate straight all schemas/users from oracle 10gR2 in Windows to oracle 11gR2 in Linux using impdp ?
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Oct 16, 2012
I am building a database to store call quality statistics for VOIP networks. It is a very insert heavy application, and data reliability is of relatively minimal importance (in the sense that a few corrupt call records here and there doesn't matter the way corruption does in for example a banks database). Long term storage is also unimportant, most customers only wish to keep 3 months of data readily available in the database. Most do not even archive the older data.
To that end I am searching for every possible way to improve my insert performance and the internet has turned me onto the idea of NOLOGGING. These are the steps I have taken to reduce my IO consumed by the Redo and Undo logs.
1. I am inserting with the APPEND_VALUES hint.
2. I have disabled force logging at the database level
3. I have disabled force logging at the tablespace level
4. I have disabled logging on the relevant table and each of its indices
As best I can tell this is all I can do to minimize Redo/Undo, but based on my observations of the Disk portion of the WinServer2008 Performance Monitor, this has made little to no change in the amount of IO to my REDO and UNDO files. IO to the .dbf containing my table makes up less than 20% of the total disk IO for oracle.exe, the rest is the REDO and UNDO logs.
asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:897564200346274711
The above article is a little over my head but I am able to extract from it that I will never entirely eliminate REDO/UNDO, which is fine, but I would think I could get it lower than it currently is.ted.
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Apr 8, 2013
I am trying to install Oracle 11g R2(64bit) on Windows 7 64 bit OS. While Creating Database using DBCA. I am getting error. Below is the screenshot.
Below is the error in the Trace file...
oracle.sysman.assistants.util.step.StepExecutionException:
Error in Process: C:Oracleapporacleproduct11.2.0serverinorapwd.exe
Unable to find error file %ORACLE_HOME%RDBMSopw<lang>.msb
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Dec 29, 2012
I am aware that from 11g, memory_target is sufficient for memeory management between SGA and PGA.
what happens if MEMORY_TARGET set to non-zero and SGA_TARGET set to zero values in a 11g database? Does it enable automatic memory management within the SGA?
We regularly hit by ORA-4031 errors. Also, memory_target advisory (v$memory_target_advice) does not show any advisory information.
for eg:
memory_max_target = 500m
memory_target = 500m
and
sga_max_size=500m
sga_target=0
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May 29, 2013
unable to start the DBCONSOLE immediately after installing Oracle 11G R2 onto my Windows 7 box. Here is what I have ran from the command line:
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:Userssandifer>emctl start dbconsole
Environment variable ORACLE_UNQNAME not defined. Please set ORACLE_UNQNAME to database unique name.
C:Userssandifer>SET ORACLE_HOSTNAME=localhost
[code].....
I checked the above listed file path, and sure enough, OC4J_DBConsole_localhost_orcl is missing.
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Oct 31, 2013
I have an issue during the database configuration using DBCA at 85% it blocs, then it displays an error asking to reconfigure ORACLE_UNQNAME.
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Dec 24, 2012
The below query is taking high CPU almost 98% and longer time to execute.
SELECT ancestor,
Max(D.alarmstate) ALARMSTATE,
Max(D.sialarmstate) SIALARMSTATE,
Max(D.uncralarmstate) UNCRALARMSTATE,
Max(M.commstate) COMMSTATE,
Max(M.nncommstate) NNCOMMSTATE,
Max(M.servicestate) SERVICESTATE,
Max(M.abnormal) ABNORMAL,
CASE
[code]....
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May 2, 2011
I have facing problem while taking backup on Windows 7 client of Oracle 11g R2 database. I have installed oracle 11gR2 for windows on windows 7 machine. I have created a directory like below in database.
On Database Server
SQL> create directory win_expdp_dir as 'd:expimp';
Directory created.
SQL> grant read, write on directory win_expdp_dir to lab;
Grant succeeded.
On Windows 7 machine (client machine)
D:appproduct11.2.0client_1BIN>expdp lab/lab@wbdata.wbh-db11g DIRECTORY=win_expdp_dir DUMPFILE=lab.dmp LOGFILE=lab.log
Export: Release 11.2.0.1.0 - Production on Mon May 2 12:51:44 2011
Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
ORA-39002: invalid operation
ORA-39070: Unable to open the log file.
I have give all sharing rights on d:expimp directory. My main question is why i'm getting this error. Is there any thing missing in setup. how to take export on windows 7 client.
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Apr 26, 2013
I am running one simple delete statement in one table with rownum<10000 but it is taking nearly 10 to 15 mins.Table doesn't have any child table rows and triggers.
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Dec 19, 2011
I have a Problem related to performance and quickness of a customized application
suppose that this application work on 2 clients. Those 2 clients logon to the same database and the same mapping application folder also the 2 PC configuration are the same.
the first client has OS windows XP , the second client has OS Windows 7. I noticed that the the second client (win7) is less performance than the first one (win xp) also I saw the application on the second client is slower than the first client.
I know that Oracle 6i on win7 is dis supported . Also i know i should upgrade to 10g or change the OS to xp. But is this the only way for enhancing the performance or is there another way i can do without changing anything (Patch , etc)
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Jun 25, 2013
I am trying to insert huge data into another huge table which is almost taking around 2-3 hrs. See my below query
INSERT /*+ APPEND *//*+ NOLOGGING */ INTO DB1.Table1 SELECT * FROM DB2.Table2 ;
COMMIT;
Both Table1 and Table2 have same structure and table1 is master table having 100 Billion records and table2 having 30 Million records. This is a direct insert where each day this operation carried.
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Sep 23, 2010
We have a MV which fetches data from around 27 tables containing 26 joins out of which 25 are outer joins. Some tables in the query are being referred multiple times through different alias names and hence the actual no of physical tables used is 18. This MV takes about 50 mins to refresh through complete refresh mechanism. We decided to make it fast refresh and thus made these configurations:
- Created MV logs based on rowid for each of the base tables.
- Recreated MV using FAST refresh,with primary key option enabled
- Pulled rowid for all these tables in the select column statement.
Even after making all the recommendations suggested by Oracle for fast refresh MV's we are still getting refresh time of around 65 mins(refresh time increased!!!).We already have indexes built on all the join columns of the base tables. What else do we need to do to make this a "fast" refresh MV ?
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Jan 12, 2011
I'm extracting/retrieving the data from the oracle database using Java application it's bit slow. However, when I retrieve from the SQL server it's faster than oracle.
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May 22, 2012
My ERP Application is responding fast while running reports or saving entries, if Oracle 10g Express Edition (XE) is installed. But in Oracle 10g Enterprise Edition or Standard Editions the same application is running very slow.
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Sep 4, 2011
If a table(have a primary key) is empty(after truncate),the sql of dml(insert,update) is very quickly,but if the table have many rows about 10,000,000 rows, the dml is very slowly,why?
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Mar 23, 2012
we are using oracle 9i on AIX Server. When Customer were accessing the database, accidentally power was shut down. we restarted the Server,and Oracle database. all resumed successfully.
However while doing "Payments by the customer" it takes a lot of time to insert even a single payment record on database.The database is Live and our customer are very much frustrated,
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Oct 9, 2013
I have table with 129 million records.
If I just to select count(*) on the table its taking more than a minute in Sql Developer.
The table structure is as below, Primary key is a sequence and then 3 foriegn keys and one non-unique index on the date column.
<Table_Name>
column1 NOT NULL NUMBER ( Primary Key)
column2 NOT NULL NUMBER ( FK1)
[Code].....
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Nov 14, 2012
The product I work on requires a query to tell us what tables are dependent on certain types.
SELECT dba_tab_cols.owner,
dba_tab_cols.table_name,
dba_tab_cols.data_type_owner,
dba_tab_cols.data_type
FROM dba_tab_cols
JOIN dba_types
ON dba_types.owner = dba_tab_cols.data_type_owner
AND dba_types.type_name = dba_tab_cols.data_type
WHERE (dba_types.owner IN ('SCHEMA1', 'SCHEMA2'......))
I find this query to be pretty slow. I think it is because data_type_owner in dba_tab_cols is not indexed. Adding an index is not an option because users expect our product to read-only.
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Oct 10, 2011
I just trying to import some informations from excel to Oracle using OLE2 over Oracle Forms 6i, but It´s very slow when I have import under then 10k lines. anything to optimize that ? Follow the code used...
application OLE2.Obj_Type;
workbooks OLE2.Obj_Type;
workbook OLE2.Obj_Type;
[Code]....
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Nov 25, 2011
Im planning to upgrade oracle10g to 11gr2.. i have query on that ..
my 10g having ORACLE_HOME=/app/ora/10.2.0, orainventory =/app/ora/oraInventory
new 11g ORACLE_HOME=/app/ora/11.2.0 .orainventory =?
my question is where i need to set ora inventory location for my new 11g? or it will create new location for that?
OS version : IBM AIX
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Sep 13, 2010
I have Windows server working Oracle 8.0.5.I have to migrate to another server that is Oracle 11gR2 on Windows 2008.Some say I can't do Export and Import directly.And some say DBlink is not working from 11Gr2 to 8.
What can be fewest step to migrate?Somebody try to use 'Oracle directory' and VB and Powerbuilder program to send data and DDL from 8 to 11Gr2.
migrating from Oracle 8.0.5 to 11Gr2 machine.
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