pply OS : Windows, Mac, Linux Apply Navicat Product : Navicat for Oracle, Navicat Premium Apply Navicat Version No. : All Instant Client package is required for Basic and TNS connection type. To download Instant Client package (Instant Cli
pply OS : Windows, Mac, Linux
Apply Navicat Product : Navicat for Oracle, Navicat Premium
Apply Navicat Version No. : All
Instant Client package is required for Basic and TNS connection type. To download Instant Client package (Instant Client Package - Basic), please go to http://www.oracle.com/technetwork/database/features/instant-client/index-097480.html
Note: Navicat version 9 or above, instant client is bundled in Navicat.
Connection Type
BasicIn Basic mode, Navicat Oracle connects to Oracle through the Oracle Call Interface (OCI). OCI is an application programming interface that allows an application developer to use a third-generation language's native procedure or function calls to access the Oracle database server and control all phases of SQL statement execution. OCI is a library of standard database access and retrieval functions in the form of a dynamic-link library.
TNS
In TNS mode, Navicat Oracle connects to Oracle server using an alias entry from a tnsnames.ora file.
Windows
Installation Instructions
Note: Navicat version 10 or below, Navicat only support 32-bit instant client.
Download the appropriate Instant Client packages for your platform. All installations REQUIRE the Basic or Basic Lite package.Note:
For Oracle 9i or above, you need Instant Client 11 or below
For Oracle 8 and 8i server, you need Instant Client 10 or below

Unzip the packages into a single directory such as "C:\instantclient_11_1".

In Options -> OCI, choose the oci.dll in the directory you defined in Step 2 ("C:\instantclient_11_1\oci.dll").

Restart Navicat.
Mac
Installation Instructions
Note: Navicat version 10 or below, Navicat only support 32-bit instant client.
Download the appropriate Instant Client packages for your platform. All installations REQUIRE the Basic or Basic Lite package.Hint:
- MAC OSX any versions running on PPC cpu should use PPC Navicat and PPC Instant Client.
- MAC OSX 10.4 or below running on INTEL cpu should use PPC Navicat and PPC Instant Client.
- MAC OSX 10.5 up running on INTEL cpu should use X86 Navicat and x86 Instant Client.
- Just simply unzip the packages and copy all files under /usr/lib or ~/lib. (Copy all files under /usr/lib for Mac OS X 10.3, otherwise, copy all files under /usr/lib or ~/lib for Mac OS X 10.4 or above.)
Tips: Besides, you can place the instant client in anywhere you like and then specify the path in Preference.
Linux
Installation Instructions
Download Instant Client packages for Microsoft Windows (32-bit). All installations REQUIRE the Basic or Basic Lite package.Note:
For Oracle 9i or above, you need Instant Client 11 or below
For Oracle 8 and 8i server, you need Instant Client 10 or below

Unzip the packages into a single directory such as "/home/test/instantclient_11_1".

In Options -> OCI, choose the oci.dll in the directory you defined in Step 2 ("/home/test/instantclient_11_1").

Restart Navicat. 1、原因:
ORA-12737: Instant Client Light: unsupported server character set CHS16GBK
Google,解释如下:
ORA-12737:
Instant Client Light: unsupported server character set string
Cause: The character set specified is not allowed for this operation or is invalid. Instant Client Light has only minimal character sets.
Action: Do not use Instant Client Light for this character set
2、首先,我们打开“tools”-->"options"菜单,见到如下界面,依据OCI library(oci.dll) 路径,导航到 navicat oci 目录下,备份里面的文件(通过在该目录新建bak文件夹,将“%dir%/Navicat Lite\instantclient_10_2”路径下的所有dll文件剪切到bak文件夹)。

3、在oracle 客户端安装目录bin/目录下,找到如下几个.dll文件

4、将上面所列文件放置到“%dir%/Navicat Lite\instantclient_10_2” 目录下,重新启动navcat即可。

如何有效监控MySQL性能?使用mysqladmin、SHOWGLOBALSTATUS、PerconaMonitoringandManagement(PMM)和MySQLEnterpriseMonitor等工具。1.使用mysqladmin查看连接数。2.用SHOWGLOBALSTATUS查看查询数。3.PMM提供详细性能数据和图形化界面。4.MySQLEnterpriseMonitor提供丰富的监控功能和报警机制。

MySQL和SQLServer的区别在于:1)MySQL是开源的,适用于Web和嵌入式系统,2)SQLServer是微软的商业产品,适用于企业级应用。两者在存储引擎、性能优化和应用场景上有显着差异,选择时需考虑项目规模和未来扩展性。

在需要高可用性、高级安全性和良好集成性的企业级应用场景下,应选择SQLServer而不是MySQL。1)SQLServer提供企业级功能,如高可用性和高级安全性。2)它与微软生态系统如VisualStudio和PowerBI紧密集成。3)SQLServer在性能优化方面表现出色,支持内存优化表和列存储索引。

mySqlManagesCharacterSetsetSandCollationsyutusututf-8asthEdeFault,允许ConfigurationAtdataBase,table和columnlevels,AndrequiringCarefullageLignmentToavoidMismatches.1)setDefeaultCharactersetTercharactersetEtCollacterSeteTandColletationForAdataBase.2)conformentcollecharactersettersetertersetcollatertersetcollationcollation

MySQL触发器是与表相关联的自动执行的存储过程,用于在特定数据操作时执行一系列操作。1)触发器定义与作用:用于数据校验、日志记录等。2)工作原理:分为BEFORE和AFTER,支持行级触发。3)使用示例:可用于记录薪资变更或更新库存。4)调试技巧:使用SHOWTRIGGERS和SHOWCREATETRIGGER命令。5)性能优化:避免复杂操作,使用索引,管理事务。

在MySQL中创建和管理用户账户的步骤如下:1.创建用户:使用CREATEUSER'newuser'@'localhost'IDENTIFIEDBY'password';2.分配权限:使用GRANTSELECT,INSERT,UPDATEONmydatabase.TO'newuser'@'localhost';3.修正权限错误:使用REVOKEALLPRIVILEGESONmydatabase.FROM'newuser'@'localhost';然后重新分配权限;4.优化权限:使用SHOWGRA

MySQL适合快速开发和中小型应用,Oracle适合大型企业和高可用性需求。1)MySQL开源、易用,适用于Web应用和中小型企业。2)Oracle功能强大,适合大型企业和政府机构。3)MySQL支持多种存储引擎,Oracle提供丰富的企业级功能。

MySQL相比其他关系型数据库的劣势包括:1.性能问题:在处理大规模数据时可能遇到瓶颈,PostgreSQL在复杂查询和大数据处理上表现更优。2.扩展性:水平扩展能力不如GoogleSpanner和AmazonAurora。3.功能限制:在高级功能上不如PostgreSQL和Oracle,某些功能需要更多自定义代码和维护。


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