Oracle 11gR2 RAC 环境测试修改节点VIP的测试操作记录
第一部分:测试条件 A、IP地址 192.168.1.52 node1 192.168.1.53 node2 192.168.1.55 node1-vip 192.168.1.56 node2-vip 10.10.10.52 node1-priv 10.10.10.53 node2-priv 192.168.1.60 racdb-cluster-scan B、版本:Oracle 11gR2 (11.2.0.2) 第二部分:测试
第一部分:测试条件A、IP地址
192.168.1.52 node1
192.168.1.53 node2
192.168.1.55 node1-vip
192.168.1.56 node2-vip
10.10.10.52 node1-priv
10.10.10.53 node2-priv
192.168.1.60 racdb-cluster-scan
B、版本:Oracle 11gR2 (11.2.0.2)
第二部分:测试过程
测试目标:将192.168.1.52服务器的VIP 192.168.1.55修改成为192.168.1.62
测试步骤:
1、确定本机cluster的网络接口
$ oifcfg iflist -p -n
2、确定本机的public 和private借口配置信息
$ oifcfg getif
3、确定本机的虚拟IP,VIP地址,VIP子网掩码
$ srvctl config vip -n node1
$ srvctl config nodeapps -a
4、停止node1上的orcl1的实例 (Oracle用户操作)
$ srvctl stop instance -d orcl -i orcl1
(经测试也可以不down instance, 如果不停掉节点的instance,则必须down掉配置的service)
5、停止node1上的监听服务
$ srvctl stop listener -n node1
由于listener是使用的VIP,这也使用了VIP服务,这两部分是有关联关系的。
6、停止VIP地址
$ srvctl stop vip -n node1
7、验证VIP地址不再运行
$ ifconfig -a
8、修改/etc/hosts
# vi /etc/hosts
9、修改节点应用以及提供新的vip地址(grid用户操作)
$ srvctl modify nodeapps -n node1 -A 192.168.1.55/255.255.255.0/bond0
10、启动节点VIP (grid用户操作)
$ srvctl start vip -n node1
11、验证VIP地址运行状态(grid用户操作)
$ srvctl config vip -n node1
VIP exists: /node1-vip/192.168.1.62/192.168.1.0/255.255.255.0/bond0, hosting node node1
12、启动node1上的监听服务 (grid用户操作)
$ srvctl start listener -n node1
13、启动node1上的orcl1的实例 (Oracle用户操作)
$ srvctl start instance -d orcl -i orcl1

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

The function in Oracle to calculate the number of days between two dates is DATEDIFF(). The specific usage is as follows: Specify the time interval unit: interval (such as day, month, year) Specify two date values: date1 and date2DATEDIFF(interval, date1, date2) Return the difference in days

The retention period of Oracle database logs depends on the log type and configuration, including: Redo logs: determined by the maximum size configured with the "LOG_ARCHIVE_DEST" parameter. Archived redo logs: Determined by the maximum size configured by the "DB_RECOVERY_FILE_DEST_SIZE" parameter. Online redo logs: not archived, lost when the database is restarted, and the retention period is consistent with the instance running time. Audit log: Configured by the "AUDIT_TRAIL" parameter, retained for 30 days by default.

The Oracle database startup sequence is: 1. Check the preconditions; 2. Start the listener; 3. Start the database instance; 4. Wait for the database to open; 5. Connect to the database; 6. Verify the database status; 7. Enable the service (if necessary ); 8. Test the connection.

The INTERVAL data type in Oracle is used to represent time intervals. The syntax is INTERVAL <precision> <unit>. You can use addition, subtraction, multiplication and division operations to operate INTERVAL, which is suitable for scenarios such as storing time data and calculating date differences.

To find the number of occurrences of a character in Oracle, perform the following steps: Get the total length of a string; Get the length of the substring in which a character occurs; Count the number of occurrences of a character by subtracting the substring length from the total length.

Oracle database server hardware configuration requirements: Processor: multi-core, with a main frequency of at least 2.5 GHz. For large databases, 32 cores or more are recommended. Memory: At least 8GB for small databases, 16-64GB for medium sizes, up to 512GB or more for large databases or heavy workloads. Storage: SSD or NVMe disks, RAID arrays for redundancy and performance. Network: High-speed network (10GbE or higher), dedicated network card, low-latency network. Others: Stable power supply, redundant components, compatible operating system and software, heat dissipation and cooling system.

The amount of memory required by Oracle depends on database size, activity level, and required performance level: for storing data buffers, index buffers, executing SQL statements, and managing the data dictionary cache. The exact amount is affected by database size, activity level, and required performance level. Best practices include setting the appropriate SGA size, sizing SGA components, using AMM, and monitoring memory usage.

Oracle uses the "||" symbol to concatenate strings. The usage method is as follows: connect the strings to be connected with the "||" symbol; the priority of string connection is low, and parentheses need to be used to ensure the priority; an empty string will still be an empty string after connection; NULL value connection is still NULL.
