Oracle XE Database Size

Please how can I check the current size of my Oracle XE database

select sum(bytes)/1024/1024 MB from v$datafile;
If you want to see files wise size,
select name, sum(bytes)/1024/1024 MB from v$datafile group by name;
Regards,
Amol

Similar Messages

Calculate database size.

Hi,
Any one help me how to check the total database size and currently used size in oracle.
Regards,
S.Mugunthan.

mugunthan wrote:
Hi,
Any one help me how to check the total database size and currently used size in oracle.
Regards,
S.Mugunthan.check the total database size and currently used size in oracle
col "Database Size" format a20
col "Free space" format a20
col "Used space" format a20
select     round(sum(used.bytes) / 1024 / 1024 / 1024 ) || ' GB' "Database Size"
,     round(sum(used.bytes) / 1024 / 1024 / 1024 ) -
     round(free.p / 1024 / 1024 / 1024) || ' GB' "Used space"
,     round(free.p / 1024 / 1024 / 1024) || ' GB' "Free space"
from    (select     bytes
     from     v$datafile
     union     all
     select     bytes
     from      v$tempfile
     union      all
     select      bytes
     from      v$log) used
,     (select sum(bytes) as p
     from dba_free_space) free
group by free.p
/

How to reduce the database size based on MS SQL/Oracle?

Hi,
I had deleted severy clients via SCC5, but the database size is more and more bigger. Do you know how to reduce the database size.
my platform is: NT, MS SQL 2005
NT, Oracle 10.2
Best Regards,
Simon Shen

Hi Simon,
In the case of SQL you need to check how many space free you have in your datafiles and the based on that you need to Shrink them using DBCC SHRINKFILE command.
Find a couple of reference docs here,
http://www.intermedia.net/support/kb/default.asp?id=996
http://doc.ddart.net/mssql/sql70/dbcc_21.htm
Also i'm pretty sure that if your check the properties of the datafiles in MSSQL Enterprise Manager you get a "Shrink" option.
Regards
Juan
Please reward with points if helpful

What is limit of database size in oracle 10g standard edition/edition one

Hai All,
What is the limit of database size in oracle 10g standard edition and standard edition one.. I see the white paper of oracle says that the limitation is 500 GB. This limitation is correct.? if correct then what happened after the limit..?
Please help?
Shiju

What white paper would that be? I can't see any limit in the Oracle Database 10g Editions comparisons.
C.

Oracle 9i Lite database size growing

The database size on Oracle 9i Lite is increased.
If I extract data and recreate database with them, volume can be reduced at 5-10 of time.
Whether there are any other ways of reduction of the size? Some tools, or may be internal Java classes.

Can i create the database without using the sync or the create db. Or programatically how do i create the database Check out the client side APIs, examples can be found in the documentation, see WINCE (PocketPC) Developer's Guide.
RP.

Use OEM to monitor oracle database size

Hello All,
We currently have several database which are currently monitored via OEM however i will appreciate if anyone can tell me how i can monitor the the size of my oracle databases via oem
Thanks

Hi,
I'm not sure of OEM will monitor database size, but many 3rd party tools do.
There are many ways to achieve Oracle table monitoring, and many create specialized extension metadata tables to monitor Oracle table growth. In Oracle 10g you can perform Oracle tables monitoring with the dba_hist_seg_stat tables, specifically the space_used_total column.
On my databases, I create STATSPACK extension tables to track table and overall database growth:
http://www.dba-oracle.com/te_table_monitoring.htm
The full scripts are in my Oracle Press book, Oracle tuning with STATSPACK . . .
http://www.amazon.com/Oracle9i-High-Performance-Tuning-STATSPACK-Burleson/dp/007222360X
Hope this helps . . .
Donald K. Burleson
Oracle Press author
Author of "Oracle Tuning: The Definitive Reference"
http://www.rampant-books.com/book_2005_1_awr_proactive_tuning.htm

Oracle database size

how can I get the maximun size allocated by DBA for the database.
and in this size how much space is free now.

user10648897 wrote:
how can I get the maximun size allocated by DBA for the database.
and in this size how much space is free now.Tried google for the same?
http://www.google.co.in/search?hl=en&q=query+to+find+database+size+oracle&meta=
And this forum as well?
http://forums.oracle.com/forums/search.jspa?threadID=&q=query+to+find+database+size+&objID=f61&dateRange=last90days&numResults=15
Cheers
Aman....

Restore Oracle XE database to another machine

I have an oracle XE database on a Windows XP machine, and I want to copy it to a Windows 7 machine.
On the XP, I performed a backup through the "Backup Database" from the GUI (BACKUP.BAT). The Oracle backup created 3 new folders underneath C:\ORACLEXE\APP\ORACLE\FLASH_RECOVERY_AREA\XE\
ARCHIVELOG
AUTOBACKUP
BACKUPSET
I installed XE on the Windows 7 machine and it seems to work well.
Then I coped the 3 backup folders onto a jump drive and put them in the corresponding folder structure on the new Windows 7 machine. I ran the Restore from the GUI as an administrator (RESTORE.BAT). The restore failed, and I can't seem to figure out why. I'm not sure what the Sequence Numbers are all about.
Now I can't get into Apex or Apex_Admin
Thanks for taking a look at this.
The contents of the OXE_RESTORE file are as follows:
Recovery Manager: Release 10.2.0.1.0 - Production on Sat Jan 8 18:33:11 2011
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Windows NT Version V6.1
CPU : 8 - type 586, 4 Physical Cores
Process Affinity : 0x00000000
Memory (Avail/Total): Ph:6031M/8183M, Ph+PgF:13737M/16364M, VA:1973M/2047M
Starting with debugging turned off
connected to target database: xe (not mounted)
RMAN> set echo on;
2> restore (spfile from autobackup db_recovery_file_dest='C:\oraclexe\app\oracle\flash_recovery_area\');
3> startup nomount force;
4> restore (controlfile from autobackup);
5> alter database mount;
6> configure controlfile autobackup off;
7> restore database;
8>
echo set on
Starting restore at 08-JAN-11
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=37 devtype=DISK
recovery area destination: C:\oraclexe\app\oracle\flash_recovery_area\
database name (or database unique name) used for search: XE
channel ORA_DISK_1: autobackup found in the recovery area
channel ORA_DISK_1: autobackup found: C:\ORACLEXE\APP\ORACLE\FLASH_RECOVERY_AREA\XE\AUTOBACKUP\2011_01_07\O1_MF_S_739828107_6LHF2W3X_.BKP
channel ORA_DISK_1: SPFILE restore from autobackup complete
Finished restore at 08-JAN-11
Oracle instance started
Total System Global Area 805306368 bytes
Fixed Size 1289996 bytes
Variable Size 239075572 bytes
Database Buffers 562036736 bytes
Redo Buffers 2904064 bytes
Starting restore at 08-JAN-11
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=36 devtype=DISK
recovery area destination: C:\oraclexe\app\oracle\flash_recovery_area
database name (or database unique name) used for search: XE
channel ORA_DISK_1: autobackup found in the recovery area
channel ORA_DISK_1: autobackup found: C:\ORACLEXE\APP\ORACLE\FLASH_RECOVERY_AREA\XE\AUTOBACKUP\2011_01_07\O1_MF_S_739828107_6LHF2W3X_.BKP
channel ORA_DISK_1: control file restore from autobackup complete
output filename=C:\ORACLEXE\ORADATA\XE\CONTROL.DBF
Finished restore at 08-JAN-11
database mounted
released channel: ORA_DISK_1
old RMAN configuration parameters:
CONFIGURE CONTROLFILE AUTOBACKUP ON;
new RMAN configuration parameters:
CONFIGURE CONTROLFILE AUTOBACKUP OFF;
new RMAN configuration parameters are successfully stored
Starting restore at 08-JAN-11
Starting implicit crosscheck backup at 08-JAN-11
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=35 devtype=DISK
Crosschecked 1 objects
Finished implicit crosscheck backup at 08-JAN-11
Starting implicit crosscheck copy at 08-JAN-11
using channel ORA_DISK_1
Finished implicit crosscheck copy at 08-JAN-11
searching for all files in the recovery area
cataloging files...
cataloging done
List of Cataloged Files
=======================
File Name: C:\ORACLEXE\APP\ORACLE\FLASH_RECOVERY_AREA\XE\ARCHIVELOG\2011_01_07\O1_MF_1_375_6LHF31CQ_.ARC
File Name: C:\ORACLEXE\APP\ORACLE\FLASH_RECOVERY_AREA\XE\ARCHIVELOG\2011_01_07\O1_MF_1_376_6LHF3DCQ_.ARC
File Name: C:\ORACLEXE\APP\ORACLE\FLASH_RECOVERY_AREA\XE\AUTOBACKUP\2011_01_07\O1_MF_S_739828107_6LHF2W3X_.BKP
using channel ORA_DISK_1
channel ORA_DISK_1: starting datafile backupset restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
restoring datafile 00001 to C:\ORACLEXE\ORADATA\XE\SYSTEM.DBF
restoring datafile 00002 to C:\ORACLEXE\ORADATA\XE\UNDO.DBF
restoring datafile 00003 to C:\ORACLEXE\ORADATA\XE\SYSAUX.DBF
restoring datafile 00004 to C:\ORACLEXE\ORADATA\XE\USERS.DBF
restoring datafile 00005 to C:\ORACLEXE\ORADATA\XE\APEX_1244616068553754.DBF
channel ORA_DISK_1: reading from backup piece C:\ORACLEXE\APP\ORACLE\FLASH_RECOVERY_AREA\XE\BACKUPSET\2011_01_07\O1_MF_NNNDF_TAG20110107T194642_6LHDZM3X_.BKP
channel ORA_DISK_1: restored backup piece 1
piece handle=C:\ORACLEXE\APP\ORACLE\FLASH_RECOVERY_AREA\XE\BACKUPSET\2011_01_07\O1_MF_NNNDF_TAG20110107T194642_6LHDZM3X_.BKP tag=TAG20110107T194642
channel ORA_DISK_1: restore complete, elapsed time: 00:00:56
Finished restore at 08-JAN-11
Recovery Manager complete.
Recovery Manager: Release 10.2.0.1.0 - Production on Sat Jan 8 18:34:37 2011
Copyright (c) 1982, 2005, Oracle. All rights reserved.
Windows NT Version V6.1
CPU : 8 - type 586, 4 Physical Cores
Process Affinity : 0x00000000
Memory (Avail/Total): Ph:6021M/8183M, Ph+PgF:13238M/16364M, VA:1973M/2047M
Starting with debugging turned off
connected to target database: XE (DBID=2604800077, not open)
RMAN> set echo on;
2> recover database;
3> alter database open resetlogs;
4>
echo set on
Starting recover at 08-JAN-11
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: sid=38 devtype=DISK
starting media recovery
archive log thread 1 sequence 375 is already on disk as file C:\ORACLEXE\APP\ORACLE\FLASH_RECOVERY_AREA\XE\ARCHIVELOG\2011_01_07\O1_MF_1_375_6LHF31CQ_.ARC
archive log thread 1 sequence 376 is already on disk as file C:\ORACLEXE\APP\ORACLE\FLASH_RECOVERY_AREA\XE\ARCHIVELOG\2011_01_07\O1_MF_1_376_6LHF3DCQ_.ARC
archive log filename=C:\ORACLEXE\APP\ORACLE\FLASH_RECOVERY_AREA\XE\ARCHIVELOG\2011_01_07\O1_MF_1_375_6LHF31CQ_.ARC thread=1 sequence=375
archive log filename=C:\ORACLEXE\APP\ORACLE\FLASH_RECOVERY_AREA\XE\ARCHIVELOG\2011_01_07\O1_MF_1_376_6LHF3DCQ_.ARC thread=1 sequence=376
unable to find archive log
archive log thread=1 sequence=377
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of recover command at 01/08/2011 18:34:47
RMAN-20000: abnormal termination of job step
RMAN-06054: media recovery requesting unknown log: thread 1 seq 377 lowscn 11715842
Recovery Manager complete.

After playing around a little bit I fixed the problem.
There are a total of four folders in \FLASH_RECOVERY_AREA\XE\ I had only copied three of the four.
ARCHIVELOG
AUTOBACKUP
BACKUPSET
The Windows services keep the files in ONLINELOG open, so I had to shut down the services and then work with the folder. Therefore four folders have to be transported and copied onto the new machine:
ARCHIVELOG
AUTOBACKUP
BACKUPSET
ONLINELOG
If you run as an administrator "Backup" from the GUI, it executes BACKUP.BAT, a batch file which calls RMAN. Once that's done, copy the four folders to the same location on the target machine and then run as an administrator "Restore" (RESTORE.BAT).
In another forum someone said to be sure that the "Archive Logs" are copied. It should be interpreted to mean not just the "ARCHIVELOG" folder, but all four folders.
Edited by: PhilMan2 on Jan 11, 2011 11:28 AM

How to find out the database size of a portal?

Hi all!
How can I determine the size of the database of one portal?
Thanks for your help!
PM

Hey Peter,
Just making sure off the top... you're using the same version of Oracle on both the source ABAP system with DBA Cockpit and the target Portal, correct?
Assuming you answered that in the affirmative, did you make an additional entry in the tnsnames.ora file on the ABAP system? This entry should reflect the target Portal database system to which your connecting. Make your change to the /oracle/<SID>/<DB_Ver>/network/admin/tnsnames.ora file. Once this is complete, copy that file to /sapmnt/<SID>/profile/oracle/tnsnames.ora.
Test your connection again after this.
Here's an excerpt from SAP Note 1261329:
Set up the database connection.
In the file tnsnames.ora that is in the directory (on the application server) to which the environment variable TNS_ADMIN refers, you must add the following entry for each Oracle remote database:
           <SID> =
             (DESCRIPTION =
               (SDU = 32768)
               (ADDRESS_LIST =
                 (ADDRESS =
                  (COMMUNITY = TCP)
                   (PROTOCOL = TCP)
                  (HOST = <database_host>)
                  (PORT = <port>)
               (CONNECT_DATA =
                 (SID = <DB_ID>)
This means that
<SID> = the ID that you want to use to access this database ("TNS Name")
<database_host> = host name of the database server
<port> = TCP port of the database listener
<DB_ID> = database ID of the database that is to be connected
Usually, you can copy the entry in the file tnsnames.ora from the relevant file of the remote system. To obtain the contents of tnsnames.ora in the remote system, log on to the remote system as the database user ora<sid> (UNIX or Linux) or as the database user <sid>adm (Windows) on operating system level. There, you call the following command from the command line.
tnsping <SID>
The output specifies the connection parameters and the path to the file sqlnet.ora. The directory in which this file is stored, also includes the file tnsnames.ora.
If you haven't seen them before, check out that note (1261329, 1028624, and 1256322). If you've still got questions, let me know.
-Kevin

Best Trategy to reduce the Database Size

Hi Everyone,
In our Client's Landscape SAP systems have been upgraded to newer versions whereas our client want
one copy of older Production systems (one copy to retain)
1) SAP R/3 4.6 C system (database size of this system is approx 2TB)
2) SAP BW 3.0 (database size of this system is approx 2TB)
Now CLient wants us to reduce the database size via re-organization because Archiving of IDOCs & Links we have already done
Client has recommended for :
1) Oracle Export/Import: Only Oracle DBA can do (ignore this one)
2) Database Reorganization : We have tried Reoragnization via BRtools but found very tedious 9 (ignore this one)
3) SAP Export/Import : Via this way we want to reduce the database size
Can anybody Tell us How much Free space do we require in order at OS level in order to store the Database Export
of Two Databases of size around 4TB & what would be the best strategy of reducing the Dabase size.
Via SAP Export/Import how much approx how much database size will be reduced
Thanks & Regards
Deepak Gosain

Hi,
>Can anybody Tell us How much Free space do we require in order at OS level in order to store the Database Export
>of Two Databases of size around 4TB & what would be the best strategy of reducing the Dabase size.
The only realistic way to know is to do a system copy of the production system on a testbed system and to test the Database Export.
If you really want to decrease the database size you will have to archive a lot more than the IDOC archiving object.
Regards,
Olivier

How to increase the database size

Hi All ,
Our Client is going to increase their customers from 3.5 million to 5 millions
(12 millions in future ) and there is no increase in the existing licenses..
At present we have very less space in Data base server. We are Going Live at the End of the Month.
How to increase the database size to meet the Client requirements.
we have to increase the No of Processerors etc...
Below are the details of Servers:
System Model: IBM,7040-681
Machine Serial Number: 830D5BF
Processor Type: PowerPC_POWER4
Number Of Processors: 2
Processor Clock Speed: 1904 MHz
CPU Type: 64-bit
Kernel Type: 64-bit
LPAR Info: 4 bgl-svr-biap
Memory Size: 4096 MB
Good Memory Size: 4096 MB
Note : Server is IBM P690.
1) System Lansdcape --> Two System Landsacpe ( Dev to Prod )
2) BW Version --> 3.5
3) SAP Basis --- > 6.4
4) No of Application servers currently having --> Only One Server
Can any body suggest me how to solve this.....
Thanks in Advance..
Kasi Chukka

Hi Kasi,
Your question is not very clear, from the looks of it, the load on your client's system will be doubling soon.
You need to look at the system stats on how the system is handling the current load, use transactions ST06, ST04 and ST02 to check if the DB hit ratios are as expected, the cpu idle time, the busy periods. Identify if there is large amounts of paging on the server(candidate for increase in real memory).
On AIX level, you will need to look at CPU / Memory usage.
On SAP Application server, you need to look at SAP Buffers.
On Oracle end, look at SGA stats, if it need to increase, the data growth that is current and estimated growth (DB02).
You will not get an exact answer to it, you will need to analyze the existing load and then estimate (guess). The hardware upgrade will also depend on what the client is willing to spend, its always a good practise to add 20% to what you have estimated as these figures are never accurate.
All the best.
Cheers,
Nisch

Oracle 10g - Database does not respond to the application users

Hi all,
I am using ORACLE 10g database with 75 users connections 50 local and 20 remote users using ADSL and dial up modem. Operating system on server is
Windows 2003.
All of a sudden users making the entry get disconnected getting the error as
ORA-12516: TNS:listener could not find available handler with matching protocol stack
Other case users when using the appliaction get their PC hanged and connection
to oracle fails again. they cannot login to the application that time, the error is
ORA-04031: unable to allocate %s bytes of shared memory ("%s","%s","%s","%s")
Twice a day the users trying to login cannot access the database server.
Front end application is in VB using exe file. When the users cannot logon
to the database. I manually stop the ORACLE services(including DB console) and
then stop the listener.
This practice is going on since last two months.
Server Scenario
After Installing Oracle Standard Edition 10g.
System tablespace utilization is 98.5% which is 465 MB out of total 470 MB.
There is only one Rollback Segment named as SYSTEM.
when we install 9i 4 rollback segments as RO1, RO2, RO3, RO4 are created
by default.
Do I need to add the datafile to SYSTEM table space as its current usage is 99.15% and its auto extend is ticked on using auto extent as 10 MB. I tried adding another datafile during weekend downtime. when I resumed on saturday morning I found it did not add any datafile which I had put on thursday eveninig as system02.dbf.
Do I need to add a new datafile to the SYSTEM tablespace ?
Do I need to create new rollback segments apart from SYSTEM rollback segment ?
My current schema size 15360Mb with its usage as 9.32% (1432.25 Mb).
Please reply !!!

Hi Paul
My Server configuration is
Compaq ML 370
3.4 Ghz Processor
3.5 GB RAM
SQL> show sga
Total System Global Area 171966464 bytes
Fixed Size 787988 bytes
Variable Size 145488364 bytes
Database Buffers 25165824 bytes
Redo Buffers 524288 bytes
SQL> select * from v$sgastat;
POOL NAME BYTES
fixed_sga 787988
buffer_cache 25165824
log_buffer 524288
shared pool subheap 55600
shared pool KQR L SO 218160
shared pool KQR M PO 1329244
shared pool KQR M SO 605364
shared pool KQR S PO 164156
shared pool KQR S SO 6144
shared pool KTI-UNDO 1235304
shared pool sql area 5368208
shared pool KGLS heap 1597560
shared pool joxs heap 6004
shared pool row cache 3707272
shared pool parameters 17520
shared pool repository 19396
shared pool ASH buffers 4194304
shared pool free memory 16586072
shared pool PL/SQL DIANA 679456
shared pool KSPD key heap 4220
shared pool PL/SQL MPCODE 1167992
shared pool library cache 11368964
shared pool miscellaneous 25942980
shared pool pl/sql source 88
shared pool PLS non-lib hp 29816
shared pool XDB Schema Cac 3594144
shared pool alert threshol 3460
shared pool joxlod exec hp 355820
shared pool table definiti 5880
shared pool temporary tabl 4932
shared pool trigger defini 12848
shared pool trigger inform 1892
shared pool type object de 20256
shared pool private strands 1198080
shared pool event statistics per sess 4384640
shared pool fixed allocation callback 304
large pool free memory 8388608
java pool joxs heap 233856
java pool free memory 44743296
java pool joxlod exec hp 5354496
40 rows selected.
SQL> select segment_name, owner, status
2 from dba_rollback_segs;
SEGMENT_NAME OWNER STATUS
SYSTEM SYS ONLINE
_SYSSMU1$                      PUBLIC ONLINE
_SYSSMU2$                      PUBLIC ONLINE
_SYSSMU3$                      PUBLIC ONLINE
_SYSSMU4$                      PUBLIC ONLINE
_SYSSMU5$                      PUBLIC ONLINE
_SYSSMU6$                      PUBLIC ONLINE
_SYSSMU7$                      PUBLIC ONLINE
_SYSSMU8$                      PUBLIC ONLINE
_SYSSMU9$                      PUBLIC ONLINE
_SYSSMU10$                     PUBLIC ONLINE
SEGMENT_NAME OWNER STATUS
_SYSSMU11$                     PUBLIC ONLINE
_SYSSMU12$                     PUBLIC ONLINE
_SYSSMU13$                     PUBLIC ONLINE
_SYSSMU14$                     PUBLIC ONLINE
_SYSSMU15$                     PUBLIC OFFLINE
_SYSSMU16$                     PUBLIC OFFLINE
_SYSSMU17$                     PUBLIC OFFLINE
_SYSSMU18$                     PUBLIC OFFLINE
_SYSSMU19$                     PUBLIC OFFLINE
_SYSSMU20$                     PUBLIC OFFLINE
_SYSSMU21$                     PUBLIC OFFLINE
SEGMENT_NAME OWNER STATUS
_SYSSMU22$                     PUBLIC OFFLINE
_SYSSMU23$                     PUBLIC OFFLINE
_SYSSMU24$                     PUBLIC OFFLINE
_SYSSMU25$                     PUBLIC OFFLINE
_SYSSMU26$                     PUBLIC OFFLINE
27 rows selected.
Currently AUTOEXTEND is ticked as on for SYSTEM tablespace and its size is showing as 99.16% (466.06 mb) used which is very much nearing to its full capacity of 470 mb.
Currently 75 users - 50 Local users and 20 Remote Users are connected to the server. Is there any limit that Server should have limited connections.
Server has Windows 2003 Standard Edition. Has Windows 2003 anything to do
with the no. of users getting connected ?

Initial Database size in PI 7.1 EHP1

Hi,
Which is the initial database size of PI 7.1 EHP1 in Windows + Oracle 11 G ??
After a Pos-instalattion and Sgen.
Thanks !!

Hi,
You are correct, Instructor has used SAP PI system ABAP stack to create proxies.
Let me explain you how he has used SAP PI system to illustrate the Direct Connection with in PI itself.
-> Created Proxies both Server and Client in PI itself.
-> Uses Client 200 as SYS1 and SYS2 as 300 (see Receiver Communication Channel creation) other than these, he must
      have 001 client for Integration server itself.
->   Executes client proxy from Client 200 and gets data from client 300 as this is the receiver.
->   Used client 200 and 300 as two different ABAP Back end systems (Integration Engines) but they are within PI itself.
->   To create proxy he must have ABAP developer license for client 200.
This never happens in any Implementation Projects, As Rajesh said they will be two different ERP systems which pass through PI.
Hope you understood now.
Regards
Praveen K

MAXIMUM DATABASE SIZE SUPPORTED BY DERBY

Hi,
What is the maximum database size that Derby supports?
Currently for our application, Oracle is used. We are planning to switch to Derby.
Any Suggestions??
Vijaya

HTTP://DB.APACHE.ORG/DERBY/MANUALS/INDEX.HTML

Oracle Apps Database severe Performance Issue

Hi Gurus,
This is regarding a severe performance issue running in our Production E-Business Suite Instance.
its an R12.1.3 setup installed with 11.2.0.1 Database. All the servers are Solaris Sparc 64 (Solaris 10)
Let me brief you about the instance first:
2 Node Application
- Main Application Server hosting web/forms/concurrent/admin servers
- iSupplier server hosting web services (placed in DMZ, used by external suppliers via Internet)
1 Node Database Server
Database Server Specs
Memory: 144G phys mem 20G total swap
- CPUs (8Px4cores, 2Px2cores)
- I/O - fiber channel hard disk (hitachi SAN Storage) - 7 DATA_TOPs (7 drives with RAID 5) - current DB size 1.6 TB
- at peak load, around 1000 concurrent forms session and 2000 web sessions.
We have been facing some serious performance issues and we raised an SR with Oracle Support.
The Support analyzed a bunch of AWR Reports we provided them and they asked us to increase the DB_CACHE from its current usage of 27G to 40G
So, we changed SGA_TARGET from 35G to 50G and PGA was increased from 35G to 40G as v$pgastat was also suggesting some lack of memory.
We made these changes last night.
Today morning we observed the following:
1. after start of office hours, we checked in the home page of EM DB Console that ADDM was showing reduced impact due to lack of SGA memory which seemed to be a good sign. Earlier it was around 25% which was now at 12%.
However, negative aspects were:
1. lot of swapping was reported by the System Administrators on the DB Server
2. High CPU Usage
3. EM DB Console showed a lot of "Concurrency Wait Class" events ...throughout the day lot of blocking sessions were reported which were making other sessions to wait.
in the AWR Report, following foreground reports were listed:
Top 5 Timed Foreground Events
Event
Waits
Time(s)
Avg wait (ms)
% DB time
Wait Class
DB CPU
132,577
61.46
library cache lock
3,539
40,683
11496
18.86
Concurrency
library cache: mutex X
4,014,083
21,011
5
9.74
Concurrency
db file sequential read
4,138,014
20,767
5
9.63
User I/O
latch free
381,916
5,897
15
2.73
Other
This is showing "library cache lock" events as the main culprit apart from the usual suspect, the CPU.
I am attaching the AWR Report. Please let me know if i should revert back the memory changes or is there anything else i could do.
Please help us resolving it because the performance is going worst.
Regards,
Muneer.

Pl do not post duplicates - Oracle Apps Database severe Performance Issue
For all critical production issues, pl work with Support thru SRs - using the forums to troubleshoot production issues is not wise

Oracle XE Database Size

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