Boot process takes place in 4 scenes with 4 main characters.
Scene 1
when the computer is switched on,it automatically invokes BIOS[a ROM chip embedded in the...
1. Three Partition.
boot partition, swap partition and root partition, these are the minimum partitions to install
the linux.
2. dmesg or /var/log/message...
As soon as the CPU is turned on, it initializes itself and looks for ROM BIOS for the first instruction which is the Power On Self-Test (POST). This process che...
A transaction is a set of operations that begin when the first DML is issued and end when a commit or rollback is issued. BEGIN COMMIT/ROLLBACK are the boundrie...
This is a key concept for any relational database. Isolation level is the manner in which locks are applied and released during a transaction. For DB@ a 're...
BOOTP sends a UDP message with a subnetwork broadcast address and waits for a reply from a server that gives it the IP address. The same message might contain t...
LILO stands for Linux boot loader. It will load the MBR, master boot record, into the memory, and tell the system which partition and hard drive to boot from....
The root login does not restrict you in any way. When you log in as root, you become the system. The root login is also sometimes called the superuser login. Wi...
Rolling forward to recover data that has not been recorded in data files, yet has been recorded in the on-line redo log, including the contents of rollback segm...