自定义 RMAN 显示的日期时间格式-Mysql Tutorial-php.cn

Home

Database

Mysql Tutorial

自定义 RMAN 显示的日期时间格式

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

Jun 07, 2016 pm 05:29 PM

ordatabase

缺省情况下，使用RMAN备份与恢复界面仅仅显示的是日期，而没有具体的时间。有时候需要查看具体的时间，如查看当天多个Incarnatio

缺省情况下，使用RMAN备份与恢复界面仅仅显示的是日期，，而没有具体的时间。有时候需要查看具体的时间，如查看当天多个Incarnation的情形。对于这个问题，主要是设定环境变量参数NLS_DATE_FORMAT即可，如下文所描述。

1、RMAN日期及时间的缺省格式
robin@SZDB:~> rman target /

Recovery Manager: Release 10.2.0.3.0 - Production on Sat Jun 1 13:54:49 2013

connected to target database: GOBO1 (DBID=733951103)

RMAN> list incarnation;

using target database control file instead of recovery catalog

List of Database Incarnations
DB Key Inc Key DB Name DB ID STATUS Reset SCN Reset Time
------- ------- -------- ---------------- --- ---------- ----------
1 1 GOBO1 733951103 PARENT 1 18-FEB-09
2 2 GOBO1 733951103 PARENT 79915248 20-SEP-12
3 3 GOBO1 733951103 PARENT 80298787 31-MAY-13
4 4 GOBO1 733951103 CURRENT 80307144 31-MAY-13

RMAN> exit

Recovery Manager complete.

2、修改环境变量对RMAN日期及时间格式进行自定义
robin@SZDB:~> export NLS_DATE_FORMAT='yyyymmdd hh24:mi:ss';
robin@SZDB:~> rman target /

Recovery Manager: Release 10.2.0.3.0 - Production on Sat Jun 1 13:55:30 2013

connected to target database: GOBO1 (DBID=733951103)

RMAN> list incarnation;

using target database control file instead of recovery catalog

List of Database Incarnations
DB Key Inc Key DB Name DB ID STATUS Reset SCN Reset Time
------- ------- -------- ---------------- --- ---------- ----------
1 1 GOBO1 733951103 PARENT 1 20090218 16:43:43
2 2 GOBO1 733951103 PARENT 79915248 20120920 15:00:44
3 3 GOBO1 733951103 PARENT 80298787 20130531 21:03:41
4 4 GOBO1 733951103 CURRENT 80307144 20130531 22:28:05

--Author :

3、永久修改RMAN日期及时间格式
最佳的办法是将该参书直接添加到.bash_profile
robin@SZDB:~> echo "export NLS_DATE_FORMAT='yyyymmdd hh24:mi:ss'" >> ~/.bash_profile

linux

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

How do you create and manage user accounts in MySQL?Apr 22, 2025 pm 06:05 PM

The steps to create and manage user accounts in MySQL are as follows: 1. Create a user: Use CREATEUSER'newuser'@'localhost'IDENTIFIEDBY'password'; 2. Assign permissions: Use GRANTSELECT, INSERT, UPDATEONmydatabase.TO'newuser'@'localhost'; 3. Fix permission error: Use REVOKEALLPRIVILEGESONmydatabase.FROM'newuser'@'localhost'; then reassign permissions; 4. Optimization permissions: Use SHOWGRA

How does MySQL differ from Oracle?Apr 22, 2025 pm 05:57 PM

MySQL is suitable for rapid development and small and medium-sized applications, while Oracle is suitable for large enterprises and high availability needs. 1) MySQL is open source and easy to use, suitable for web applications and small and medium-sized enterprises. 2) Oracle is powerful and suitable for large enterprises and government agencies. 3) MySQL supports a variety of storage engines, and Oracle provides rich enterprise-level functions.

What are the disadvantages of using MySQL compared to other relational databases?Apr 22, 2025 pm 05:49 PM

The disadvantages of MySQL compared to other relational databases include: 1. Performance issues: You may encounter bottlenecks when processing large-scale data, and PostgreSQL performs better in complex queries and big data processing. 2. Scalability: The horizontal scaling ability is not as good as Google Spanner and Amazon Aurora. 3. Functional limitations: Not as good as PostgreSQL and Oracle in advanced functions, some functions require more custom code and maintenance.

How do you perform a JOIN operation in MySQL?Apr 22, 2025 pm 05:41 PM

MySQL supports four JOIN types: INNERJOIN, LEFTJOIN, RIGHTJOIN and FULLOUTERJOIN. 1.INNERJOIN is used to match rows in two tables and return results that meet the criteria. 2.LEFTJOIN returns all rows in the left table, even if the right table does not match. 3. RIGHTJOIN is opposite to LEFTJOIN and returns all rows in the right table. 4.FULLOUTERJOIN returns all rows in the two tables that meet or do not meet the conditions.

How does MySQL's performance compare to other RDBMS under high load?Apr 22, 2025 pm 05:37 PM

MySQL's performance under high load has its advantages and disadvantages compared with other RDBMSs. 1) MySQL performs well under high loads through the InnoDB engine and optimization strategies such as indexing, query cache and partition tables. 2) PostgreSQL provides efficient concurrent read and write through the MVCC mechanism, while Oracle and Microsoft SQLServer improve performance through their respective optimization strategies. With reasonable configuration and optimization, MySQL can perform well in high load environments.

Explain the InnoDB Buffer Pool and its importance for performance.Apr 19, 2025 am 12:24 AM

InnoDBBufferPool reduces disk I/O by caching data and indexing pages, improving database performance. Its working principle includes: 1. Data reading: Read data from BufferPool; 2. Data writing: After modifying the data, write to BufferPool and refresh it to disk regularly; 3. Cache management: Use the LRU algorithm to manage cache pages; 4. Reading mechanism: Load adjacent data pages in advance. By sizing the BufferPool and using multiple instances, database performance can be optimized.

MySQL vs. Other Programming Languages: A ComparisonApr 19, 2025 am 12:22 AM

Compared with other programming languages, MySQL is mainly used to store and manage data, while other languages such as Python, Java, and C are used for logical processing and application development. MySQL is known for its high performance, scalability and cross-platform support, suitable for data management needs, while other languages have advantages in their respective fields such as data analytics, enterprise applications, and system programming.

Learning MySQL: A Step-by-Step Guide for New UsersApr 19, 2025 am 12:19 AM

MySQL is worth learning because it is a powerful open source database management system suitable for data storage, management and analysis. 1) MySQL is a relational database that uses SQL to operate data and is suitable for structured data management. 2) The SQL language is the key to interacting with MySQL and supports CRUD operations. 3) The working principle of MySQL includes client/server architecture, storage engine and query optimizer. 4) Basic usage includes creating databases and tables, and advanced usage involves joining tables using JOIN. 5) Common errors include syntax errors and permission issues, and debugging skills include checking syntax and using EXPLAIN commands. 6) Performance optimization involves the use of indexes, optimization of SQL statements and regular maintenance of databases.

See all articles