read db file online

Using Oracle Berkeley DB as a NoSQL data storeShashank TiwariReleased February 2011"NoSQL" is a new buzzword among developers, architects, and even technology managers. Although the term has recently been popular, it is surprising that it does not

This article describes a simple SQL script that implements the ability to shrink all non-system db file sizes across Microsoft SQL Server instances.As a program that deals with SQL every day, apes often encounter db files that are too large to fill

This paper uses 10046 events to analyze the difference between ALTER INDEX rebuild and ALTER index rebuild online Alter index rebuild online is essentially a scan table rather than scanning an existing index block to achieve an indexed rebuild Alter

? Determine what types of failures can occur in Oracle DB? Describe how to optimize instance recovery? Explain the importance of checkpoints, redo log files, and archived log files? Configure the quick recovery area? Configuring Archivelog Mode

Implementation principle of DB database horizontal segmentation-Database Sharding, table sharding, master/slave, cluster, and server load balancer bitsCN.com Chapter 2 Introduction With the popularization of Internet applications, the storage and

1. Process ArchitectureThe processes in the Oracle DB system are divided into two main groups:? Running the application or Oracle tool codeUser Process? Running the Oracle DB server codeOracle DB Process(includingserver processes and background

? Describe the storage of table row data in a block? Create and manage table spaces? Get tablespace information How table data is stored When you create a table, you also create one that holds its data.segment。 A table space contains a

ObjectiveCodeIgniter default is not support read, write separation, the general practice of online circulation is modified in the Ci_model layer, but there are several problems: First use of CodeIgniter users are used after the discovery is

Database Storage Architecture The files that make up Oracle DB can be categorized into the following categories:?Control Files:Contains data related to the database itself, which is the physical database structure information. These files are

What are the general conditions for refactoring the index1. When the index is based on the table of DML operations frequently, over time, indexing efficiency is lower and higher, so you need to rebuild the index2. When the table is moved to another