Plugging an Unplugged Pluggable Database with No copy method

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Plugging an Unplugged Pluggable Database

Unplugging the PDB

To unplug a PDB, you first close it and then generate an XML manifest file. The XML file contains information about the names and the full paths of the tablespaces, datafiles of the unplugged PDB. The information will be used by the plugging operation.
We are going to unplug the PDB to plug them with No copy methods.

[oracle@localhost pdb3]$ . oraenv
ORACLE_SID = [cdb1] ? cdb1
The Oracle base remains unchanged with value /u01/app/oracle

[oracle@localhost pdb3]$ sqlplus / as sysdba

SQL> show con_name

CON_NAME
----------------
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Plugging an Unplugged Pluggable Database with copy method

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Plugging an Unplugged Pluggable Database

Unplugging the PDB

To unplug a PDB, you first close it and then generate an XML manifest file. The XML file contains information about the names and the full paths of the tablespaces, datafiles of the unplugged PDB. The information will be used by the plugging operation.

We are going to unplug the PDB to plug them with Copy methods.

[oracle@localhost pdb3]$ . oraenv
ORACLE_SID = [cdb1] ? cdb1
The Oracle base remains unchanged with value /u01/app/oracle

[oracle@localhost pdb3]$ sqlplus / as sysdba

SQL> show con_name

CON_NAME
------------------
Read more

Upgrade RAC Grid and Database from 11g To 12c

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Main steps:
Grid: –
1. Check all services are up and running from 11gR2 GRID_HOME
2. Perform backup of OCR, voting disk and Database.
3. Create new directory for installing 12C software on both RAC nodes.
4. Run “runcluvfy.sh” to verify errors.
5. Install and upgrade GRID from 11gR2 to 12cR1
6. Verify upgrade version
Database: –
1. Backup the database before the upgrade
2. Database upgrade Pre-check
Creating Stage for 12c database software
Creating directory for 12c oracle home
Check the pre upgrade status.
3.Unzip 12c database software in stage
4Install the 12.1.0.2 using the … Read more

How to configure Logminer in oracle step by step

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LOGMINER :-

Logminer is a utility provided with the Oracle database server which mines the redologs or Archivelogs and data dictionary information to build the SQL statements and keeps the contents of the redolog file in the fixed view called ” V$logmnr_contents “.
LogMiner tool can help the DBA to the find changed records in redo log files by using a set of PL/SQL procedures and functions .
Internally Oracle uses the Log Miner technology for several other features,such as Flashback Transaction Backout,Streams, and Logical Standby Databases .Most often LogMiner is used for recovery purpoRead more

How To Downgrade Oracle 19c Grid To 12c Grid

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In the pervious article we have explained the Upgrade Grid Infrastructure 12c To 19c Oracle Now We will explain the steps for downgrade oracle 19c 2 node GRID to oracle 12.1.0.2 GRID.

ENVIRONMENT DETAILS:
2 NODES – localhost1 and localhost2
Grid owner – oracle
19C ORACLE_HOME(current) – > /sharearea/crs/grid19c
12C ORACLE_HOME (old) -> /crs/app/oracle/product/grid12c

1. Check the current grid version:( check on both the nodes)

oracle@localhost1:/$ crsctl query crs softwareversion
Oracle Clusterware version on node [dbhost1] is [19.0.0.0.0]
oracle@localhost1:$ crsctl 
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Upgrade Grid Infrastructure 12c To 19c Oracle

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The latest oracle version is oracle 19C . In the below article we will explain the steps for upgrading grid infrastructure to 19c from oracle 12c . The upgrade will be done in rolling mode.

Current configuration – >

No of nodes – 2 node
current version – 12.1.0.2
os platform – Linux
grid owner – oracle

Check software version :
oracle@node1~$ crsctl query crs activeversion
Oracle Clusterware active version on the cluster is [12.1.0.2.0]

oracle@node2~$ crsctl query crs softwareversion
Oracle Clusterware version on node node1 is [12.1.0.2.0]

2. Download the software and unzip on your first Read more

How to Configuration GRID/ASM for single instance using UDEV

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Configuration GRID/ASM for single instance using UDEV

UDEV Linux configuration:

What I’m preparing in the background is a RAC installation using two virtual machine running under VirtualBox. For this I have attached to my first virtual machine four fixed size of 1GB disks like this

 

To attach those disks in another virtual machine go to Virtual Media Manager and change their property to shareable like this

udev02

Once you start your guest OS you should see something:

[root@localhost ~]# fdisk -l
.
.
.
Disk /dev/sdb: 1073 MB, 1073741824 bytes, 2097152 sectors
Units = sectors of 1 * 512 = 5
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