TEMP UNDO TABLESPACE : Another 12C Feature

Testing is not finished yet , Everyday working on database 12C  , Lot Of New Features , TEMP_UNDO_TABLESPACE one of these new features, In older Oracle Versions Temp Tables are stored in Undo Tablespace, But now with #DB12c you can enable Parameter TEMP_UNDO_TABLESPACE by Default this parameter set to FALSE But in Dataguard 12c  this parameter is set to TRUE by default.

The Benefit of Using Temp Undo Tablespace :

  • reduce the amount of using undo tablespace
  • in this case performance improved because less data will be written on redolog.
  • Temp Undo Tablespace support DML 

SQL> show parameter TEMP_UNDO_ENABLED;

———————————— ———– ——-
temp_undo_enabled     boolean FALSE

You Don’t have to reset Database to Enable this Parameter because it’s working on Session level 

SQL> alter session set temp_undo_enabled=TRUE   ;
Session altered.

also you set this parameter on database level :

SQL> alter system set temp_undo_enabled=true;
System altered.

SQL> show parameter temp_undo_enabled ;

———————————— ———– ——-
temp_undo_enabled     boolean TRUE

View Related to temp undo tablespace :

 Name   Null?    Type
 —————————————– ——– —————————-
 END_TIME             DATE
 UNDOTSN             NUMBER
 TXNCOUNT             NUMBER
 EXTCNT             NUMBER
 USCOUNT             NUMBER
 CON_ID             NUMBER

Database 12c Installation

1. Download the Oracle Database 12.1 Software from OTN
2. Make sure Oracle Database Software and OS are certified using https://support.oracle.com
3. Make sure of the following


you need to configure Swap Memory And make sure you RAM is enough to avoid Out Of memory during the installation.


as i mention before check certified OS with database, in my case i will use Redhat 6 update 4.

install Packages :

binutils- (x86_64)
glibc-2.12-1.7.el6 (x86_64)
libgcc-4.4.4-13.el6 (x86_64)
libstdc++-4.4.4-13.el6 (x86_64)
libaio-0.3.107-10.el6 (x86_64)
libXext-1.1 (x86_64)
libXtst- (x86_64)
libX11-1.3 (x86_64)
libXau-1.0.5 (x86_64)
libxcb-1.5 (x86_64)
libXi-1.3 (x86_64)
make-3.81-19.el6sysstat-9.0.4-11.el6 (x86_64)
compat-libcap1-1.10-1 (x86_64)
compat-libstdc++-33-3.2.3-69.el6 (x86_64)
gcc-4.4.4-13.el6 (x86_64)
gcc-c++-4.4.4-13.el6 (x86_64)
glibc-devel-2.12-1.7.el6 (x86_64)
ksh  <== any version of ksh is acceptable
libstdc++-devel-4.4.4-13.el6 (x86_64)
libaio-devel-0.3.107-10.el6 (x86_64)

inside /etc/sysctl.conf

fs.file-max = 6815744
kernel.sem = 250 32000 100 128
kernel.shmmni = 4096
kernel.shmall = 1073741824
kernel.shmmax = 4398046511104
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
fs.aio-max-nr = 1048576
net.ipv4.ip_local_port_range = 9000 65500

Use this command to restart kernel  /sbin/sysctl -p


  Serverip                Hostname


oracle   soft   nofile    1024
oracle   hard   nofile    65536
oracle   soft   nproc    2047
oracle   hard   nproc    16384
oracle   soft   stack    10240
oracle   hard   stack    32768


session required pam_limits.so

after edit OS parameter you need to create Oracle user :

groupadd -g 101 oinstall
groupadd -g 102 dba
groupadd -g 103 oper

 useradd -u 100 -g oinstall -G dba,oper oracle

passwd oracle

copy media to your Server , and do the following :

chown -R oracle:oinstall /u01/database
chmod -R 775 /u0/database
mkdir -p /u01/app/oracle/product/12.1.0/db_1
chown -R oracle:oinstall /u01
chmod -R 775 /u01

now start installation by ./runInstaller

to Create Database you need to configure listener using netca and after finished successfully use dbca like below : 

I Upload the article Here
Thank you
Osama mustafa

Oracle Java SE Critical Patch Released

“The June 2013 Oracle Java SE Critical Patch Update was released on June 18, 2013. Oracle strongly recommends applying the patches as soon as possible.

The Critical Patch Update Advisory is the starting point for relevant information. It includes the list of products affected, a summary of the security vulnerabilities, and a pointer to obtain the latest releases and patches.”

June 2013 Oracle Java SE Critical Patch Update: Here

The next four scheduled dates for Oracle Java SE Critical Patch Updates are:
16 April 2013
18 June 2013
15 October 2013
14 January 2014

Thank you
Osama mustafa

" java.lang.UnsatisfiedLinkError" When Run Oracle EBS

Exception in thread “main” java.lang.UnsatisfiedLinkError: /u01/media/StageR12/startCD/Disk1/rapidwiz/jre/Linux_x64/1.6.0/lib/i386/xawt/libmawt.so: libXi.so.6: cannot open shared object file: No such file or directory
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(Unknown Source)
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.load0(Unknown Source)
at java.lang.System.load(Unknown Source)
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(Unknown Source)
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System.loadLibrary(Unknown Source)
at sun.security.action.LoadLibraryAction.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.awt.NativeLibLoader.loadLibraries(Unknown Source)
at sun.awt.DebugHelper.(Unknown Source)
at java.awt.Component.(Unknown Source

This error appear while trying to  ./rapidwiz in Oracle EBS , and it’s regarding to Wrong packager version

First you need to remove the old package using :

rpm -e –nodeps

Install the required package from the below link :

Package libXi 32bit Here
Package libXi 64bit Here

Re Run the Installer again


Thank you
Osama Mustafa

Which module You installed on Apps

Sometimes you need to check which module you installed in oracle E-business suite and to do that there’s more one way :

using Query / as Apps User :

SELECT a.application_name,a.product_code,
DECODE (b.status, ‘I’, ‘Installed’, ‘S’, ‘Shared’, ‘N/A’) status,
patch_levelFROM apps.fnd_application_vl a,
apps.fnd_product_installations b
WHERE a.application_id = b.application_id
and b.status=’I’ order by product_code asc;

Using adutconf.sql scripts which is located in $AD_TOP

This script include information about Product installation status, version and other information.

Using Oracle Application Manager ( OAM )

Site Map —> License Manager Which licensed word means installed.


Thank you
Osama Mustafa