Month: May 2013

Increase /tmp Using Zfs Solaris 11

Posted on by Osama Mustafa in Operating system

zfs create -V 1gb rpool/newtmp
swap -a /dev/zvol/dsk/rpool/newtmp

 Old Size :

swap                   159M   212K       159M     1%    /tmp
rpool/export            78G    32K        67G     1%    /export
rpool/export/home       78G    32K        67G     1%    /export/home
rpool/export/home/omnix
                        78G   790K        67G     1%    /export/home/omnix
oracle                 118G   1.1M        11G     1%    /oracle
rpool                   78G    39K        67G     1%    /rpool
oracle/u01             118G    93G        25G    79%    /u01
/oracle                 11G   1.1M        11G     1%    /home/oracle

New Size :

root@HMMDB:/# zfs create -V 1gb rpool/extraswap
root@HMMDB:/# zfs list
NAME                      USED  AVAIL  REFER  MOUNTPOINT
oracle                    107G  10.6G  1.11M  /oracle
oracle/u01               92.6G  25.0G  92.6G  /u01
rpool                    12.6G  65.6G    39K  /rpool
rpool/ROOT               5.39G  65.6G    31K  legacy
rpool/ROOT/solaris       5.39G  65.6G  5.03G  /
rpool/ROOT/solaris/var    316M  65.6G   312M  /var
rpool/dump               1.03G  65.7G  1.00G  –
rpool/export              854K  65.6G    32K  /export
rpool/export/home         822K  65.6G    32K  /export/home
rpool/export/home/omnix   790K  65.6G   790K  /export/home/omnix
rpool/extraswap          1.03G  66.7G    16K  –
rpool/swap               5.16G  65.8G  5.00G  –

root@HMMDB:/# swap -a /dev/zvol/dsk/rpool/extraswap

Now Check New Size for /tmp

swap                   1.2G   212K       1.2G     1%    /tmp
rpool/export            78G    32K        66G     1%    /export
rpool/export/home       78G    32K        66G     1%    /export/hom

Thank you
Osama Mustafa

Flashback version query/Operation Column is Unknown

Posted on by Osama Mustafa in Database

SQL > SELECT START_SCN,OPERATION,LOGON_USER,XID FROM  FLASHBACK_TRANSACTION_QUERY WHERE TABLE_NAME=’TEST’;

The Output will be like this :

XID              TABLE_OWNER TABLE_NAME OPERATION           LOGON_USER UNDO_SQL
—————- ———– ———- ——————————– ———-              —————
0600090064030000              TX         UNKNOWN                          TEST
0600090064030000              TX         UNKNOWN                          TEST

To avoid Unknown Status enable  supplemental logging by

SQL> ALTER DATABASE ADD SUPPLEMENTAL LOG DATA ;

Database altered.

Thank you
Osama mustafa

Enable FTP On Redhat

Posted on by Osama Mustafa in Operating system
to enable FTP on Redhat on you have to follow to follow the below step,you need to define which user will use the FTP, in this article i will use root user :

Edit the files /etc/vsftpd.ftpusers and /etc/vsftpd.user_list looks like :

#

# List of users denied access to the FTP server, see ftpusers(4).
#
root
daemon
bin
sys
adm
lp
uucp
nuucp
dladm
netadm
netcfg
smmsp
xvm
mysql
openldap
webservd
nobody
noaccess
nobody4
unknown
zfssnap
aiuser

and remove root user from each file.

You can control ftp as services from

/etc/init.d/vsftpd

Thank you
Osama Mustafa

ORA-00607/ORA-00600

Posted on by Osama Mustafa in Database

ORA-00600: internal error code, arguments: [4193], [4271], [4056], [], [], [], [], []

As you see the above error ORA-00600 usually Indicate for Bug, A mismatch has been detected between Redo records and Rollback (Undo)  records. and to solve this issue you need to do the below :

SQL> show parameter undo
NAME                                 TYPE        VALUE
———————————— ———– ——————————
undo_management                      string      AUTO
undo_retention                       integer     900
undo_tablespace                      string      UNDOTBS

SQL> alter system set undo_management=’MANUAL’ scope=spfile;

SQL > Shutdown immediate ;
SQL > Startup ; 

SQL > create undo tablespace NEW_UNDOTBS datafile ‘/u01/app/oracle/oradata/SID/NEW_UNDOTBS01.DBF’ size 1G ;

SQL> alter system set undo_tablespace=’NEW_UNDOTBS’ scope=spfile;

System altered.

SQL> alter system set undo_management=’AUTO’ scope=spfile;

System altered.

 After Shutdown The new Effect Should be Taken And If you want to Drop Old Undo you can do This another option you can use is Take if Offline. Sometimes when you want to drop Old Undo you receive new error : 

SQL> drop tablespace UNDOTBS01 including contents;
ORA-01548: active rollback segment ‘_SYSSMU1_1255349037$’ found, terminate dropping tablespace

So What Can i do Take Offline Or The Below Option :

SQL> select * from v$rollname ;

USN NAME
———- —————–
0   SYSTEM
1  _SYSSMU1$
2 _SYSSMU2$
3 _SYSSMU3$
4 _SYSSMU4$
5 _SYSSMU5$
6 _SYSSMU6$

 SQL > Create Pfile=’/u01/New.init’ from spfile
 File Created

SQL > Shutdown immediate ;

Edit pfile 

*.undo_management=’MANUAL’
*.undo_retention=1800
*.undo_tablespace=’NEW_UNDOTBS’
*._offline_rollback_segments= (_SYSSMU1$,_SYSSMU2$,_SYSSMU3$,_SYSSMU4$,_SYSSMU5$,_SYSSMU6$ )

  • Startup database from new pfile without create spfile ;
  • try to Drop Tablespace Now, this way should work.
  • After drop Undo Tablespace, Remove _offline Parameter and undo_management to AUTO 

Thank you 
Osama Mustafa

em12c agent software unavailable

Posted on by Osama Mustafa in Application
Sometimes you need to deploy new agent to different machine or database, and to do that you have to add target and choose which platform installed but Agent software unavailable  this is the message you will see.

to solve this :

Setup >> Extensibility >> Self Update

Connection mode should be Offline ( you need to configure System Library to change Connection mode or Error will be appeared )

After change Connection mode to offline back to self_update main screen And Press Check Updates

New Box Dialog will appear 

You need to visit https://support.oracle.com and download patch number 9348486 after finish downloading copy to OMS server using FTP and don’t unzip it.

Run the below command

 ./emcli import_update_catalog -file=/u01/p9348486_112000_Generic.zip -omslocal

if the below error show up :

Error: The command name “import_update_catalog” is not a recognized command.
Run the “help” command for a list of recognized commands.
You may also need to run the “sync” command to synchronize with the current OMS.

Do the following :

 ./emcli login -username=’SYSTEM’
Enter password
Login successful

 ./emcli sync
Synchronized successfully

And Re-Run The Above Command Again,
The output will look like this 
after doing this will be able to see  all the agent Software in Self-update like the below.
now each kind of agent you need to download you have to install the patch and apply

 ./emcli import_update_catalog -file= ….. 

You can download the article from here

Thank you
Osama Mustafa

Expdp Error –> ORA-31617/ORA-19505/ORA-27037

Posted on by Osama Mustafa in Database
Setup like the following :

Database 11gr2
Rac 11gr2

When trying to expdp the below error appear :

expdp dumpfile=tdmp_test.dmp logfile=1.log directory=expdp_folder schemas=siebel parallel=4

ORA-31693: Table data object “CS_XM_TEMP”.”CS_XM_TEMP_CC” failed to load/unload and is being skipped due to error:
ORA-31617: unable to open dump file “/u01/expdp /dump_test.dmp” for write
ORA-19505: failed to identify file “/u01/expdp/dump_test.dmp”
ORA-27037: unable to obtain file status

You need to make sure of the below :
–  Folder exdp_folder should be exists on the both nodes with same path.

even if you try to connect using tnsnames it will generate error so solution
-Remove parallel from your expdp command to be like this

expdp dumpfile=tdmp_test.dmp logfile=1.log directory=expdp_folder schemas=siebel 


-Use Cluster Option in expdp

expdp dumpfile=tdmp_test.dmp logfile=1.log directory=expdp_folder schemas=siebel cluster=n

Thank you
Osama mustafa

Startup database with ORA-00000

Posted on by Osama Mustafa in Database
SQL*Plus: Release 11.2.0.3.0 Production on Mon May 20 12:26:29 2013

Copyright (c) 1982, 2011, Oracle.  All rights reserved.

Connected.
SQL>
SQL>
SQL> startup ;
ORA-00000: normal, successful completion

you need to investigate  more about this error most the cause for this error :
1- Oracle Home contain “/” in the end of detestation.
2- if one not works for you, Then you need to check your networks included with listener
Thank you 
Osama Mustafa 

Oracle Error : ORA-31003/ORA-06512

Posted on by Osama Mustafa in Database
The Below Error Appear when you are trying to use dbms_network_acl_admin

ORA-31003: Parent /sys/acls/File_name.xml already contains child entry
ORA-06512: at “SYS.DBMS_NETWORK_ACL_ADMIN”, line 226
ORA-06512: at line 30
ORA-01403: no data found

The Solution Is Simple

exec dbms_network_acl_admin.drop_acl(‘/sys/acls/file_name.xml’);
Commit
Re-Run Script Again.

Thank you
Osama Mustafa

Upgrade R12.1.1 To R12.1.3

Posted on by Osama Mustafa in Application
To Upgrade Oracle EBS R12.1.1 To R12.1.3 Follow the Below Steps :

From https://support.oracle.com you have to download the following patch :

  • p9239090_R12_LINUX_1of6.zip
  • p9239090_R12_LINUX_2of6.zip
  • p9239090_R12_LINUX_3of6.zip
  • p9239090_R12_LINUX_4of6.zip
  • p9239090_R12_LINUX_5of6.zip
  • p9239090_R12_LINUX_6of6.zip
  • p9239095_R12_GENERIC.zip
  • p9822544_R12.MSC.B_R12_GENERIC.zip(Optional)
  • p10349415_R12.AD.B_R12_GENERIC.zip (Optional)
  • p9239089_R12.AD.B_R12_LINUX.zip
Before Start Working You have to shutdown all application Services using  ( adstpall.sh ) and enable maintenance mode using adadmin 
Run the Patch in Order like the following, before apply Any Patch you need to check README.txt for any Pre-Install Step/Post-Install Step 
1- Start with patch Number 9239089 , before do that on Readme.txt you have to do the below :
-Open Two Session ( Terminal ) Run Apps Env On Terminal #1, Terminal #2 run database Env.
-On DB Terminal Create under $ORACLE_HOME/Appsutil/admin 
-Copy adgrants.sql (Unix)  from patch folder to Above folder.
-From $ORACLE_HOME/appsutil/admin Run adgrants.sql
-sqlplus /nolog
-SQL> @$ORACLE_HOME/appsutil/admin/adgrants.sql
2-Apply Patch 10349415
3-Apply Patch 9239090
4-Apply Patch 9239095
5-Apply patch 9822544 
6-Apply Patch  9817770 
7-Apply Patch 9966055
After you Applied all the above patch Do the below steps :
On Application Tier :
  • Run Autoconfig ( Which is Located $ADMIN_SCRIPT_HOME )
  • Run the admkappsutil.pl ( Located in $AD_TOP/bin/admkappustil.pl ) Using the below command 

perl /bin/admkappsutil.pl

This will generate new appsutil.zip located in  $INST_TOP/admin/out

On Database Tier :

Copy appsutil from Application tier to $ORACLE_HOME,Unzip in under $ORACLE_HOME Like the below

  • cd $ORACLE_HOME
  • unzip appsutil.zip
  • Run autoconfig for Database Tier located in ( $ORACLE_HOME/appsutil/admin) –> adauto.sh
Finally two more simple step, you need to run adpreclone on Database Tier & application Tier using the below command :
  • perl adpreclone.pl dbTier (located in $ORACLE_HOME/appsutil/admin)
  • perl adpreclone.pl appsTier (Located in $ADMIN_SCRIPT_HOME)
Disable Maintenance mode now. 

Sqlplus apps/***
SQL> select release_name from fnd_product_groups;
RELEASE_NAME
————————————————–
12.1.3

Start Application Services using ( adstrtall.sh )

Thank you
Osama mustafa

Oracle Security Topic, what you should be Afraid of ?

Posted on by Osama Mustafa in Others
Again !!!!

SQL injection Occur when someone ( Hackers ) Writing Web application code that access to your database this code contain special format.

As DBA you need to understand who access to database and corporate with developers and make sure they are connect in secure way. and Use good SQL statement to avoid SQL injection, because of this Don’t relay on your firewall always make sure you secure your database and your code before start working on firewall, i am not saying here firewall will not protect your database yes it will but don’t forget now these days we have devices and complex network wireless, IPAD , Mobiles , Devices and Laptop are connected to your network, so in that case firewall will not protect you 100%, secure for better reasons 🙂

Users connect to database using Listener, Even database is down and listener is up user can still open connection to database ( which is caused the problem ) you can access to the server because there is no authentication way in listener, lot of examples on this type of attackes.

to solve this issue you need to Patch & patch OS and Database to ensure all security bugs and fixed.

there’s different type of oracle vulnerabilities Buffer overflow , listener issues , misunderstanding configuration and PL/SQL which indicate to SQL injection. most of our fears is not outside hackers/attacker it’s internally such as employee, hacking lessons online on internet and free everyone want to try it where mostly in work, in 2008 reports indicate that 26% of hacking issues happened because employee ignorant.

Company ignore security side because Resource such as money and consultant but they will not do that after they get hacked and lose everything data and customer information.

Most of the company has network administrator and system administrator so if you secure OS & network well your database will be secure.

Thank you
Osama Mustafa