Database

Installing MongoDB is an easy process. To install MongoDB on your Linux Centos Cpanel server

Installing MongoDB on Cpanel Server

As a first step, let’s install MongoDB on our Centos operating system

cd /etc/yum.repos.d
nano -w mongodb.repo

Let’s add it to your file

[mongodb]
name=MongoDB Repo
baseurl=http://downloads-distro.mongodb.org/repo/redhat/os/x86_64/
gpgcheck=0
enabled=1

We save and exit with CTRL + X

Now we can install MongoDB

yum install mongo-10gen mongo-10gen-server

During installation, we will ask us some questions and confirm them by entering them all. After completing the installation process, ssh

Linux Operating Systems will automatically see how to start and stop the database. Together with the database, we will enable Listener Service and Enterprise Manager to automatically turn on and off.

When this operating system is installed, the shutdown or reboot command will shut down.

1. On our system, we create “.bash_profile için for oracle user. In this article, I configured it according to the features of my system. You need to configure according to your own system.

--- With Oracle user, we will open the ".bash_profile" file in the Home directory as follows.
$ vim .bash_profile

-- After opening the required variables to the file, we save and exit the file.

# Oracle bash_profile Environment Settings

TMP=/tmp; export TMP
TMPDIR=$TMP; export TMPDIR

ORACLE_HOSTNAME=techsoftcenter-db.localdomain; export ORACLE_HOSTNAME
ORACLE_UNQNAME=orcl; export ORACLE_UNQNAME
ORACLE_BASE=/u01/app/oracle; export ORACLE_BASE
GRID_HOME=/u01/app/11.2.0.3/grid; export GRID_HOME
DB_HOME=$ORACLE_BASE/product/11.2.0.3/db; export DB_HOME
ORACLE_HOME=$DB_HOME; export ORACLE_HOME
ORACLE_SID=orcl; export ORACLE_SID
ORACLE_TERM=xterm; export ORACLE_TERM
BASE_PATH=/usr/sbin:$PATH; export BASE_PATH
PATH=$ORACLE_HOME/bin:$BASE_PATH; export PATH

LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib; export LD_LIBRARY_PATH
CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib; export CLASSPATH

if [ $USER = "oracle" ]; then
  if [ $SHELL = "/bin/ksh" ]; then
    ulimit -p 16384
    ulimit -n 65536
  else
    ulimit -u 16384 -n 65536
  fi
fi

alias oraenv='. /home/oracle/.bash_profile'

2. We are preparing our services that will start at the operating system.

-- we switch to privileged root user mode.

$ su - root 
Password: 
# vim /etc/init.d/dbora

-- Then we make the following changes in the file "/etc/init.d/dbora".

#!/bin/sh
# chkconfig: 345 99 10
# description: Oracle auto start-stop script.
#
# Set ORA_OWNER to the user id of the owner of the 
# Oracle database software.

ORA_OWNER=oracle

case "$1" in
    'start')
        # Start the Oracle databases:
        # The following command assumes that the oracle login 
        # will not prompt the user for any values
          su - $ORA_OWNER -c "/home/oracle/scripts/startup.sh >> /home/oracle/scripts/startup_shutdown.log 2>&1"
        touch /var/lock/subsys/dbora
        ;;
    'stop')
        # Stop the Oracle databases:
        # The following command assumes that the oracle login 
        # will not prompt the user for any values
            su - $ORA_OWNER -c "/home/oracle/scripts/shutdown.sh >> /home/oracle/scripts/startup_shutdown.log 2>&1"
        rm -f /var/lock/subsys/dbora
        ;;
esac

3. Set the security on the file.

# chmod 750 /etc/init.d/dbora

4. We’re adding it to the chkconfig layer to work at a startup.

# chkconfig --add dbora

5. Now we put the opening and closing scripts into the directory where we will create the dbora file as we said before. So we will write the commands that should work on opening and closing into these files. We will then make the necessary configurations for the “oracle” user to access our files.

# mkdir -p /home/oracle/scripts
# chown oracle.oinstall /home/oracle/scripts

6. Now we can create our startup and shutdown scripts. Here you will need to set the DB parameter to your own system.

-- We create our Startup Script.

# vim /home/oracle/scripts/startup.sh

-- In the file we opened, we enter the following lines.

#!/bin/bash

export ORACLE_SID=orcl
ORAENV_ASK=NO
. oraenv
ORAENV_ASK=YES

# Start Listener
lsnrctl start

# Start Database
sqlplus / as sysdba << EOF
STARTUP;
EXIT;
EOF

# Start Enterprise Manager
emctl start dbconsole

-- We are creating our closing script.

# vim /home/oracle/scripts/shutdown.sh

-- In the file we opened, we enter the following lines.

#!/bin/bash

export ORACLE_SID=orcl
ORAENV_ASK=NO
. oraenv
ORAENV_ASK=YES

# Stop Enterprise Manager
emctl stop dbconsole

# Stop Listener
lsnrctl stop

# Stop Database
sqlplus / as sysdba << EOF
SHUTDOWN IMMEDIATE;
EXIT;
EOF

7. After that, we will create the privileges and security settings of our scripts.

# chmod u+x /home/oracle/scripts/startup.sh /home/oracle/scripts/shutdown.sh
# chown oracle.oinstall /home/oracle/scripts/startup.sh /home/oracle/scripts/shutdown.sh

8. That’s all we can do now we can test our services.

# service dbora start
# service dbora stop

This article was written by testing Oracle 11g R2 (11.2.0.3.0) on Oracle Enterprise Linux 6.4.

The subject of our article is how to move the database to the sub-versions of SQL Server and we will talk about a few important points. Generate Script will move and we will talk about important points. In fact, the process runs smoothly, but if the Database size exceeds a certain level, the Database memory may fail during this process.

Now we will move to a lower SQL version of a Database that runs in SQL 2017 as the Lab environment.

In this article, I will explain how to backup and restore database backups with SQL Server Management Studio. The backup process is to keep an instance of all data on the database against the risk of loss and corruption. This backed up data is then restored as needed to prevent possible data loss.

Backup Process with SQL Server Management Studio

You must know the types of SQL Server Backup before proceeding to backup. There are 3 different backup types on SQL Server.

I will try to give you information about system databases and user databases in a series named “Basics of database management in SQL Server”.

Databases in SQL Server

Basically, SQL Server has the following two types of databases:

1. System Databases.

2. User Databases.

System Databases

System databases are one of the databases created when SQL Server is installed. These databases are used for various operational and management activities for SQL Server.