XFS vs ext4
DBA Republic | Oracle database tips, tricks and tutorial
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11M ago
 XFS and ext4 are both 64-bit journaling file systems for Linux. They are the successors to the ext2 and ext3 file systems, respectively. XFS was developed by Silicon Graphics, and ext4 was developed by the Linux kernel community.   Both file systems are widely used on Linux systems. XFS is generally considered to be more robust and reliable than ext4, while ext4 is more widely supported and has better performance for small files.   Here is a more detailed comparison of XFS and ext4:   XFS   Pros: More robust and reliable than ext4 Better suited for large files and vo ..read more
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Transport Layer Security -TLS
DBA Republic | Oracle database tips, tricks and tutorial
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11M ago
TLS (Transport Layer Security) is a cryptographic protocol that provides communication security over a computer network. It is used to secure a wide range of applications, including web browsing, email, and file transfers. TLS is based on the SSL (Secure Sockets Layer) protocol, which was developed by Netscape Communications in the early 1990s. SSL was later renamed TLS and is now an industry standard. TLS works by using a combination of encryption and authentication to protect data in transit. Encryption scrambles the data so that it cannot be read by unauthorized parties. Authentication ens ..read more
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Passwordless Connectivity
DBA Republic | Oracle database tips, tricks and tutorial
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11M ago
Passwordless connectivity is a way to connect to a server without having to enter a password. This is done by using a public key and a private key. The public key is stored on the server, and the private key is stored on the client. When the client connects to the server, it sends the public key to the server. The server then verifies the public key and allows the client to connect without having to enter a password. Passwordless connectivity is more secure than password-based connectivity. This is because the public key is encrypted, and the private key is stored on the client. This makes it ..read more
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XFS
DBA Republic | Oracle database tips, tricks and tutorial
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11M ago
 XFS is a high-performance, 64-bit journaling file system created by Silicon Graphics, Inc (SGI) in 1993. It was the default file system in SGI's IRIX operating system starting with its version 5.3. XFS was ported to the Linux kernel in 2001; as of June 2014, XFS is supported by most Linux distributions; Red Hat Enterprise Linux uses it as its default file system. XFS excels in the execution of parallel input/output (I/O) operations due to its design, which is based on allocation groups (a type of subdivision of the physical volumes in which XFS is used- also shortened to AGs). XFS file s ..read more
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EXT4
DBA Republic | Oracle database tips, tricks and tutorial
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11M ago
 ext4 (fourth extended filesystem) is a journaling file system for Linux, developed as the successor to ext3. It is the default file system for many Linux distributions, including Ubuntu, Fedora, and Red Hat Enterprise Linux. ext4 was initially a series of backward-compatible extensions to ext3, many of them originally developed by Cluster File Systems for the Lustre file system between 2003 and 2006, meant to extend storage limits and add other performance improvements. However, other Linux kernel developers opposed accepting extensions to ext3 for stability reasons, and proposed to fork ..read more
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File System
DBA Republic | Oracle database tips, tricks and tutorial
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11M ago
 A file system is a way of organizing files on a storage device. It provides a way to store files in a way that makes it easy to find them again. The file system also provides a way to keep track of what files are stored on the device and how they are related to each other. There are many different file systems in use, each with its own advantages and disadvantages. Some of the most common file systems include: NTFS: The New Technology File System is the default file system for Windows operating systems. It is a journaling file system, which means that it keeps track of changes to files ..read more
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ASW Region and Availability Zone
DBA Republic | Oracle database tips, tricks and tutorial
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3y ago
Amazon Web Service Cloud  is located throughout the Globe. Their physical logical data center is located in North America, South America, Europe, Middle East, Africa and Asia. In this Article, we will talk about Regions, Availibitly zones and Local zones and why it is important for you to know before you being architecting your cloud network and helps you pick the right region for your need. Regions: AWS has the concept of Regions which is a physical location around the global where the cluster of data center resides. Each Region consist of multiple isolated and physically separated Avail ..read more
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Data Replication Explained
DBA Republic | Oracle database tips, tricks and tutorial
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4y ago
This article talks about replication and the need for data replication from one database to another or between systems. Every company has their own need to move data but the most common reasons for  data replication are as follows: Load reduction: Keeping a complete or partial copy of a collection on a different server reduces the load on the main server.  Improved service: Accessing a copy of the data can provide better service to users than having them access the original data..  Restricted data access: If some users should only have access to a subset of data, replicating o ..read more
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Attunity Replication Limitations and Considerations
DBA Republic | Oracle database tips, tricks and tutorial
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4y ago
Every coin has two sides similarly,  Attunity Replication tool has it's upside and downside, The list below is a list of Attunity Replicate Limitations (what Attunity Replicate claims)  but I called it  Attunity Replication Development guidelines before committing to a client. If you are unable to replicate because your source/target database are hitting the limitation list from the below, then it is time for your database to restructure or re-design. Simple database design best practices would have prevent this when the database was initially designed. I would use this list whe ..read more
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Attunity Replication Topologies
DBA Republic | Oracle database tips, tricks and tutorial
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4y ago
Attunity Replicate supports the following topologies for replication tasks:  One to One Logical Independence Hub and Spoke One to One: In a one-one topology, there is one source and one target endpoint. When the source and target endpoints are distinct, Attunity Replicate guarantees transactional integrity and consistency of data. If you use two different replication tasks, the endpoints may switch roles, allowing two-way synchronization. This is the most used topology in most organization.  Caution: If the same row in a table is updated by two different replication tasks, the r ..read more
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