How to install Oracle 18c in silent mode

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installation Of Oracle 18c in silent mode

This installation is for:

Oracle Linux Server release 7.7
Oracle Database 18c Enterprise Edition Release 18.0.0.0.0

Disabling SELINUX:

[root@dba18 ~]# vi /etc/selinux/config
[root@dba18 ~]# cat /etc/selinux/config
SELINUX=disabled
SELINUXTYPE=targeted

Disabling the Firewall:

[root@dba18 ~]# service firewalld stop
Redirecting to /bin/systemctl stop firewalld.service
[root@dba18 ~]# systemctl disable firewalld
Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed symlink /etc/syst
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Installing Oracle18c Grid Infrastructure for New cluster

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After Installation of oracle 18c binaries 

If you haven’t install 18c Please go through with the links: https://fouaddba.com/installation-of-18c-oracle-binaries-and-database-at-same-time/

Setup Grid user Profile
$ vi .bash_profile
...
umask 022

ORACLE_SID=+ASM1
ORACLE_BASE=/u01/app/grid
ORACLE_HOME=/u01/app/18.3.0/grid
PATH=$PATH:$HOME/.local/bin:$HOME/bin:$ORACLE_BASE/bin:$ORACLE_HOME/bin
export PATH ORACLE_SID ORACLE_BASE ORACLE_HOME

Grid software is unzipped and installed in the Grid Home directory. In this case ‘/u01/app/18.3.0/grid/’.… Read more

Generating a SSH key pair using the PuTTY Key Generator

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How To generate a SSH key pair using PuTTY Key Generator,

1. Find puttygen.exe in the PuTTY folder on your computer, for example, C:\Program Files (x86)\PuTTY. Double-click puttygen.exe to open it.

2. Accept the default key type, SSH-2 RSA.
SSH-2 is the most recent version of the SSH protocol (and is incompatible with SSH-1). RSA and DSA are algorithms for computing digital signatures

3. Set the Number of bits in a generated key to 2048 bits, if it is not already set with that value.
This sets the size of your key and thus the security level. A minimum of 2048 bits is recommended for SSH-2 RSA.

4. Cli… Read more

Step by Step Installation of Oracle 19c binaries in linux 7.7

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In this Article you will se how to install oracle 19cbinaries

Step 1 :
Disable firewall and selinux:
first check the status of firewalld status weather is active or not:

[root@localhost /]# systemctl status firewalld
● firewalld.service – firewalld – dynamic firewall daemon
Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled)
Active: active (running) since Mon 2021-05-03 01:47:30 IST; 4h 12min ago
Docs: man:firewalld(1)
Main PID: 957 (firewalld)
Tasks: 2
CGroup: /system.slice/firewalld.service
└─957 /usr/bin/python2 … Read more

Step by Step Create ACFS File System Using RAC Commands

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ACFS Oracle ASM Cluster File System is cluster file system service used for High availability services.
Example – For achieving high availability in goldenate for Oracle RAC, we can use ACFS for goldengate relate files.
In this article, we will show how to create a ACFS file system in oracle RAC using command line.

ENVIRONMENT DETAILS

ORACLE GRID VERSION – 12.1.0.2
NODES – NODE3 , NODE4
OS – Linux OEL

1.Create an ASM DISKGROUP( ON NODE 3)

echo $ORACLE_HOME
/crsapp/app/oracle/product/grid12c

echo $ORACLE_SID
+ASM1

sqlplus / as sysasm

SQL> CREATE DISKGROUP ACFSPOC EXTERNAL REDUNDANCY
D
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How to clean diag and Trace file in Oracle Database

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oracle clean up trace, alert, aud, listener and other log files

The path of each log file of the database
The method of viewing various Oracle logs: if it is rac, the query method under the asm instance is the same

1.View the diagnostic log:
The new diagnostic information structure of 11g and above versions, view v$diag_info information, display log directory:

show parameter diag;
select * from v$diag_info
The output example is as follows:
1 ADR Base
/u01/app/oracle
1 ADR Home
/u01/app/oracle/diag/rdbms/orcl11g/orcl11g
1 Diag Trace
/u01/app/oracle/diag/rdbms/orcl11g/orcl11g/trac
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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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