Oracle

By default, the administrator password of Oracle is fixed to facilitate installation and debugging. In the Oracle database, two users with DBA permissions, Sys and System. I found that Oracle databases on many Chinese websites did not change the

I like Oracle tablespace very much. I also like to sum up the experience and lessons on Oracle tablespace status in my work. Let's talk about this in detail. 1. query the Oracle tablespace status

What should I do if my Oracle password is lost? The following two methods are provided for your reference. The methods described in this article may also be omitted due to different Oracle versions. Solution 1: sqlplus "/ as sysdba" 

After a long period of development in Oracle, many users are familiar with Oracle database adjustment. Here I will share my personal understanding and discuss it with you. The Oracle database is adjusted in the Oracle database operation phase. The

Questions about Oracle user tablespace Permissions: User A is created under SYS. The default tablespace is A1 and the temporary tablespace is A2. Then create table space A3. How does user A have the permission to create A table in A3? The premise is

Oracle is still quite common, So I studied Oracle selectivity. This article compares the number of unique keys in the column and the number of rows in the table to determine the Oracle selectivity of this column, I would like to share it with you

Oracle is still quite common, So I studied Oracle index scanning and shared it with you here. I hope it will be useful to you. We first find the corresponding rowid value through the index (multiple rowid values may be returned for non-unique

There are many things worth learning about in Oracle. Here we mainly introduce Oracle log buffers, including the establishment of optimized indexes. The contention of the Oracle log buffer completely limits the database performance, so try to reduce

After learning to redo Oracle log files for a long time, I would like to share with you that you have certainly gained a lot after reading this article. I hope this article will teach you more. In Windows 2000 Server, the "performance" tool can be

Oracle has a lot to learn about. Here we mainly introduce Oracle Freelist, including Freelists and other aspects. One of Oracle's advantages is that it can manage free space in each tablespace. Oracle is responsible for table and index space

Oracle is still quite common, so I have studied Oracle SQL optimization and I will share it with you here, hoping it will be useful to you. Oracle SQL optimization is a complex topic, and even requires the entire book to introduce the nuances of

After a long period of development in Oracle, many users are familiar with Oracle materialized views. Here I will share my personal understanding and discuss it with you. The Oracle materialized view provides powerful functions that can be used to

Oracle has a lot to learn about. Here we mainly introduce Oracle latches, including the read consistency mechanism of Oracle. Oracle locks are divided into two types: Oracle latches and locks. Latches are used to protect access to the memory

Before giving you a detailed introduction to Oracle password verification, let's first let you know what Oracle password verification is, and then give a comprehensive introduction to Oracle password verification, hoping to be useful to everyone. To

After studying the Oracle pctused parameters for a long time, I would like to share with you that you have certainly gained a lot after reading this article. I hope this article will teach you more. One of Oracle's advantages is that it can manage

Oracle is still quite common, So I studied Oracle parameter settings and shared it with you here. I hope it will be useful to you. The following is a summary of the requirements for Oracle parameter settings for index storage. The following rules

During application development, it is common to sort data according to certain rules and then retrieve the first few data records. In Oracle, order by is commonly used to obtain data smaller than Oracle Rownum. However, if you are not familiar with

Before giving you a detailed description of the Complete Oracle uninstall procedure, let's first take a look at the system environment, and then fully introduce the Complete Oracle uninstall procedure. System Environment:1. Operating System: Windows

Before giving you a detailed introduction to Oracle XML data, let's first let you know about Oracle 11 GB, and then give a comprehensive introduction to Oracle XML data. In Oracle 11g, you can use CLOB or binary to save XML Information, which is

I would like to introduce Oracle to you. Many people may not know more about Oracle systems than SAP. It does not matter. After reading this article, you will certainly have a lot of GAINS. I hope this article will teach you more things. Today, I