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MongoDB Backup and Restore Commands
For more posts regarding MongoDB, please click on Index Mongodump creates a binary export of MongoDB data in BSON format. It’s ideal for logical backups and supports replica set consistency with the --oplog option. MongoDB Utilities : Mongoexport : Export...
Replication in MongoDB
https://youtu.be/OWpiccVVNwU?si=jg7ryOK1Jxw9v8eW Replication is implemented via replica sets—a self-healing group of mongod processes that maintain the same dataset. Replica set architecture Primary: Accepts all writes. Records each write in the oplog...
MongoDB Basic Commands
NOTE : We will use the below in the entire document for learning purpose : DB Name : infra Collection Name : topics 1. Create a database : User Infra Note : Creating a database is only possible, once you add a collection to it 2. Create a collection : Here we...
MongoDB Blogs
1. MongoDB Basics 2. MongoDB Basic Commands 3. Replication in MongoDB 4. MongoDB Backup and Restore Commands
MongoDB Basics
https://youtu.be/nB7wjQGWCU4?si=tCaM_hTu5Sfl64ls What is MongoDB? Mongo DB is a NoSQL Database which is Not Only SQL Database. It is an Open Source Database. MongoDB is written primarily in C++ The core database engine (storage, indexing, replication,...
MySQL Master Master Replication – Step By Step
Here we will be implementing Master Master Replication in MySQL 5.7 For more interesting posts on MySQL, please click on INDEX Below are the server details which will be used : Server 1 : Hostname : Master1 IP Address : 172.168.190.1 Server 2 : Hostname : Master2 IP...
Fixing up pre-upgrade issues related to DST update operation in Oracle 19c Upgrade
During Oracle 19c upgrade you may have to resolve the below required actions before upgrading the database Complete any pending DST update operation before starting the database upgrade. There is an unfinished DST update operation in the database. It's current state...
Linux Blogs
1. Mount a File System in Linux 2. Environment Operations Fail With “bash: error while loading shared libraries: libncurses.so.5: cannot open shared object file: No such file or directory”
Environment Operations Fail With “bash: error while loading shared libraries: libncurses.so.5: cannot open shared object file: No such file or directory”
Recently I faced this problem while trying to start MySQL Database Instance on a new Linux Environment : error while loading shared libraries: libncurses.so.5: cannot open shared object file: No such file or directory In the below step, we can see ncurses 6.1...
Mount a File System in Linux
To mount a File System in RedHat Linux, please perform the below steps: 1. Identify the newly added Disk [root@localhost ~]# fdisk -l Disk /dev/sda: 85.9 GB, 85899345920 bytes, 167772160 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical):...