ORACLE的一些错误与配置收集【ora
且全部字符中应该为字母和数字混合 错误描述 及 解决 办法 :: ERROR: ora-12541:TNS:没有监听器 1.没有监听程序,或者监听程序没有启动; 解决办法 ::配置监听程序或者 重启监听程序 2.监听程序已经启动,任然报错,说明 监听程序 和 数据库 启动顺序出
且全部字符中应该为字母和数字混合
错误描述
ERROR:
ERROR:
解决办法
1.cmd-----ping ip地址 查看网络问题,看能否ping通
2.cmd-----tnsping
3.cmd----netstat -na 查看1521端口是否关闭,如果关闭Windows XP中的防火墙设置中将1521端口设为例外
4.cmd----lsnrctl status
二、连接数据库时报错:ora 12541 TNS 无监听程序
外地回来,登录pl/sql出现错误:ORA-12541:TNS:无监听程序。
1.
TNSLSNR for 32-bit Windows: Version 10.1.0.2.0 - Production on 04-1月 -2010 13:38:34
Copyright (c) 1991, 2004, Oracle.
系统参数文件为D:\oracle\product\10.1.0\db_1\network\admin\listener.ora
写入D:\oracle\product\10.1.0\db_1\network\log\listener.log的日志信息
写入D:\oracle\product\10.1.0\db_1\network\trace\listener.trc的跟踪信息
跟踪级别当前为0
以 pid=7180 开始
监听: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROCipc)))
监听该对象时出错: (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=pc-xxx.mail.yyy.cn)(PORT=1521)))
TNS-12542: TNS: 地址已被占用
不再监听: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(PIPENAME=\\.\pipe\EXTPROCipc)))
2.
3.
# listener.ora Network Configuration File: D:\oracle\product\10.1.0\db_1\network\admin\listener.ora
# Generated by Oracle configuration tools.
SID_LIST_LISTENER =
LISTENER =
把(ADDRESS = (PROTOCOL = TCP)(HOST = pc-xxx.mail.yyy.cn)(PORT = 1521))
改为(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
pc-xxx.mail.yyy.cn是计算机名
127.0.0.1也就是目前数据库正在用的ip地址。
4.
找到下列语句:
ORCL =
将(ADDRESS = (PROTOCOL = TCP)(HOST = pc-xxx.mail.yyy.cn)(PORT = 1521))
改为(ADDRESS = (PROTOCOL = TCP)(HOST = 127.0.0.1)(PORT = 1521))
5.
运行->cmd启动dos窗口,执行lsnrctl stop关闭,lsnrctl start启动。
ora 12541 tns 无监听程序 ORA 12541 TNS
三、导出整个oracle数据库
办公室移了,现在要把服务器(A)上的数据库导到另一个服务器(B)上,操作如下:
在B机的orcale的E:\oracle\product\10.2.0\db_1\BIN 目录里找到exp.exe 双击,出现如图1:
图1
1、输入用户名和密码(你要导出的数据库对应的用户)。注:用户名是在PLSQL登陆后在窗体右上角的全名。按enter
2、输入数组提取缓冲区大小:65536 按enter
3、输入导出文件的路径 ,如:e:\testenv20120502.cmp 按enter
4、选择导出的类型,可以根据自己的需要,我是导出全部表:(1)E(完整的数据库),(2)U(用户) 或 (3)T(表): (2)U》输入E 按enter
5、接下来的导出权限、表数据、压缩区都 直接 按enter
完成以上操作,便开始导出了,效果如图2:
等执行完成,去刚输入的路径中查看,导出的xxx.dmp是否已存在,导入后续…………

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

Table of Contents Solution 1 Solution 21. Delete the temporary files of Windows update 2. Repair damaged system files 3. View and modify registry entries 4. Turn off the network card IPv6 5. Run the WindowsUpdateTroubleshooter tool to repair 6. Turn off the firewall and other related anti-virus software. 7. Close the WidowsUpdate service. Solution 3 Solution 4 "0x8024401c" error occurs during Windows update on Huawei computers Symptom Problem Cause Solution Still not solved? Recently, the web server needs to be updated due to system vulnerabilities. After logging in to the server, the update prompts error code 0x8024401c. Solution 1

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.
