Tag: Oracle Osama

Clone Pluggable Database

Posted on by Osama Mustafa in Database
If you want to Clone One Of Pluggable database , How can you do that :

SQL> select name from v$pdbs ;

NAME
——————————
PDB$SEED
TEST_1
TEST_2

Let’s Clone Test_1 , Create folder on os level to move test_1 data. 

[oracle@test12c u01]$ mkdir clone
[oracle@test12c u01]$ cd clone/
[oracle@test12c clone]$ pwd
/u01/clone

Open Test_1 Read Only : 

SQL> alter pluggable database test_1 close immediate;Pluggable database altered.

SQL> alter pluggable database test_1 open read only ;Pluggable database altered.

Set this parameter to our created directory above : 

SQL> show parameter db_create_file_dest ;

NAME     TYPE VALUE
———————————— ———–
db_create_file_dest     string

SQL> alter system set db_create_file_dest=’/u01/clone’;             System altered.

SQL> show parameter db_create_file_dest ;

NAME     TYPE VALUE
———————————— ———–
db_create_file_dest     string /u01/clone

SQL> create pluggable database clone from test_1 ;Pluggable database created.

SQL> alter pluggable database clone open ;Pluggable database altered.

Test Clone Pluggable database 

[oracle@test12c ~]$ sqlplus sys/sys@test12c:1521/clone as sysdba

SQL*Plus: Release 12.1.0.1.0 Production on Sat Jul 13 20:20:24 2013
Copyright (c) 1982, 2013, Oracle.  All rights reserved.

Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.1.0 – 64bit Production
With the Partitioning, OLAP, Advanced Analytics, Real Application Testing
and Unified Auditing options

SQL> show con_name ;CON_NAME
——————————
CLONE

SQL> select name from v$pdbs ;

NAME
——————————
PDB$SEED
TEST_1
TEST_2
CLONE

You can drop Clone Database using the below command

SQL > Alter Pluggable database Clone Including Datafiles ;

Thank you 
Osama mustafa

Pluggable Database Part (3)

Posted on by Osama Mustafa in Database
Since Pluggable Database is New Topic to post about , I Cannot post Everything in One Post so i decide to do it as tutorial and this one part (3) , every Topics uploaded Here on my blog or on my Account on Shareslide here.

In This topic :

  • How to unplug database.
  • Plugging Database to another Container Database.
Let’s Start :

SQL> select name, con_id from v$active_services ;

NAME          CON_ID
——————————— ———-
new2   4
new   3
db12cXDB   1
db12c   1
SYS$BACKGROUND   1
SYS$USERS   1

as you see i already create two pluggable database new,new2 and now :

SQL> alter pluggable database new close immediate ;

Pluggable database altered.

SQL> alter pluggable database new2 close immediate ;

Pluggable database altered.

Unplug database included with xml file :

SQL> alter pluggable database new unplug into ‘/u01/app/oracle/oradata/new.xml’;Pluggable database altered.

SQL> alter pluggable database new2 unplug into ‘/u01/app/oracle/oradata/new_2.xml’;Pluggable database altered.

Drop Database :

SQL> drop pluggable database new keep datafiles ;Pluggable database dropped.

SQL> drop pluggable database new2 keep datafiles ;Pluggable database dropped.

make sure you drop database :

SQL> select pdb_name, status from cdb_pdbs ;

PDB_NAME STATUS
———– ————-
PDB$SEED NORMAL

 Before Plug Database to any Container you need to make sure from compatibility , there’s PL/SQL code written by Oracle to check compatibility.

SQL > DECLARE
   compatible BOOLEAN := FALSE;
BEGIN
   compatible := DBMS_PDB.CHECK_PLUG_COMPATIBILITY(
        pdb_descr_file => ‘/u01/app/oracle/oradata/new.xml’);
   if compatible then
      DBMS_OUTPUT.PUT_LINE(‘Is pluggable PDB1 compatible? YES’);
   else DBMS_OUTPUT.PUT_LINE(‘Is pluggable PDB1 compatible? NO’);
   end if;
END;
/
Is pluggable PDB1 compatible? YES
PL/SQL procedure successfully completed.

 The Same will be for new2.xml

Now Let’s Create Database Using With Two Way :

SQL> create pluggable database newdb_plug using ‘/u01/app/oracle/oradata/new.xml’ nocopy tempfile reuse ;

Pluggable database created.

SQL> select pdb_name, status from cdb_pdbs; 

PDB_NAME STATUS
—————— ————-
NEWDB_PLUG NEW
PDB$SEED NORMAL 

 Another method to plug database :

SQL> create pluggable database new_plug_copy using ‘/u01/app/oracle/oradata/new_2.xml’
  2  copy
  3  FILE_NAME_CONVERT=(‘/u01/app/oracle/oradata/New2′,’/u01/app/oracle/oradata/new_plug_copy’);

Pluggable database created.

SQL> select name,open_mode from v$pdbs;

NAME       OPEN_MODE
—————————— ———-
PDB$SEED       READ ONLY
NEWDB_PLUG         MOUNTED
NEW_PLUG_COPY MOUNTED

 Therefore 

  • Copy Clause : 
    • if you want the files listed in the XML file to be copied to the new location and used for the new PDB.
  • Nocopy Clause
    • if you want the files for the PDB to remain in their current locations.
But what if i want to move all datafiles and create new pluggable database,oracle 12c provide you with new clause to do this which is “move” check below :
SQL> create pluggable database new_plug_move using ‘/u01/app/oracle/oradata/new_2.xml’
  2  move
  3  FILE_NAME_CONVERT=(‘/u01/app/oracle/oradata/New2′,’/u01/app/oracle/oradata/move’);
create pluggable database new_plug_move using ‘/u01/app/oracle/oradata/new_2.xml’
*
ERROR at line 1:
ORA-65122: Pluggable database GUID conflicts with the GUID of an existing container.

The above error is normal because i already create  pluggable database using new_2.xml to solve it

SQL> create pluggable database new_plug_move as clone using ‘/u01/app/oracle/oradata/new_2.xml’
  2  move
  3  FILE_NAME_CONVERT=(‘/u01/app/oracle/oradata/New2′,’/u01/app/oracle/oradata/move’);

Pluggable database created.

SQL> select pdb_name, status from cdb_pdbs;

PDB_NAME STATUS
——————- ————-
NEWDB_PLUG NEW
PDB$SEED NORMAL
NEW_PLUG_COPY NEW
NEW_PLUG_MOVE NEW

You can open any database now and work on them.
This article uploaded to Slide Share here.

Reference
1-Oracle Documentation here

Thank you
Osama Mustafa

TEMP UNDO TABLESPACE : Another 12C Feature

Posted on by Osama Mustafa in Database
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;

NAME     TYPE VALUE
———————————— ———– ——-
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 ;

NAME     TYPE VALUE
———————————— ———– ——-
temp_undo_enabled     boolean TRUE
 

View Related to temp undo tablespace :

SQL> desc V$TEMPUNDOSTAT;
 Name   Null?    Type
 —————————————– ——– —————————-
 BEGIN_TIME    DATE
 END_TIME             DATE
 UNDOTSN             NUMBER
 TXNCOUNT             NUMBER
 MAXCONCURRENCY     NUMBER
 MAXQUERYLEN    NUMBER
 MAXQUERYID    VARCHAR2(13)
 UNDOBLKCNT    NUMBER
 EXTCNT             NUMBER
 USCOUNT             NUMBER
 SSOLDERRCNT    NUMBER
 NOSPACEERRCNT     NUMBER
 CON_ID             NUMBER

Enable Enterprise Express for Database 12c

Posted on by Osama Mustafa in Database
Oracle Database 12c comes with new feature called Enterprise manager 12c express, this new enterprise manager control Database 12c using GUI , manager storage , performance , user, roles, accounts and others new features added , No command to start or shutdown EM 12c express by default when you start/shutdown database it will be up/down.

  • export ORACLE_SID
  • Make sure listener is up and database is registered.

sqlplus / as sysdba
SQL> show parameter dispatcher ;
NAME     TYPE VALUE
———————————— ———– ——————————
dispatchers     string (PROTOCOL=TCP) (SERVICE=db12cX
DB)

  • Configure HTTP PORT 

SQL> exec DBMS_XDB_CONFIG.setHTTPPort (8080);

Check the below pictures that describe EM Express :

DBMS_XDB.setHTTPPort is deprecated

Thank you
Osama mustafa

Database 12c Installation

Posted on by Osama Mustafa in Database
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

Hardware

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

Software

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

install Packages :

binutils-2.20.51.0.2-5.11.el6 (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-1.0.99.2 (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

/etc/hosts

  Serverip                Hostname

 /etc/security/limits.conf

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

/etc/pam.d/login

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
  

Enable Debug Mode Oracle Enterprise Manager

Posted on by Osama Mustafa in Application
you need to change directory to below :

/u01/app/oracle/product/11.2.0/dbhome_1/sysman/config

under this directory you will work on

  • emd.properties
  • emagentlogging.properties
Backup two files. using cp command.
Open 

  • emagentlogging.properties
File :

change 

log4j.rootCategory=WARN, emagentlogAppender, emagenttrcAppender
TO 
log4j.rootCategory=DEBUG, emagentlogAppender, emagenttrcAppender
  • emd.properties
Change 
EMAGENT_PERL_TRACE_LEVEL=WARN
TO 
EMAGENT_PERL_TRACE_LEVEL=DEBUG
Restart dbconsole
Thank you 
Osama mustafa

Share Folder On Solaris For Window Purpose

Posted on by Osama Mustafa in Operating system
In this article i will show how to share folder in Solaris and use this folder for Copy/Paste in windows , I will use NFS so you need to make sure it’s already enable in Windows

  • Select Control Panel.
  • Select Programs.
  • Select Programs and Features.
  • Select Turn Windows Features on or off.
  • Select Services for NFS.
  • Select the check box Client for NFS and click OK.
Now On Solaris Side , Using Share command 

share [-F fstype] [ -o options] [-d “”] [resource]

Create Folder and use the below command to share 

share -F nfs -o rw -d “codereview dirs” /u01/Shared –> my Shared Folder



root@Host:/u01# cat /etc/dfs/sharetab 

/u01/hmmdb u01_hmmdb nfs sec=sys,rw codereview
/u01/Shared u01_Shared nfs sec=sys,rw

Now back to windows open Command Prompt “cmd”
and run the below command :
showmount -e Server-IP 

Exports list on :
/u01/Shared                        All Machines
/u01/hmmdb                         All Machines

Command to share on windows :
mount -o mtype=hard Server-IP:Path_for_share_folder name drive letter or *
mount -o mtype=hard server-ip:/u01/Shared Z:
Done
Thank you 
Osama mustafa