You can use flashback technology on standby side. If you want to make application test on database, you can use data guard as read write mode temporarily with flashback technology. You can create a restore point on standby side then you can do any transaction on standby side to test or any other purpose. After…
Oracle 11g R2 Data Guard Manual Switchover Steps
You can use the same steps to switchover for single data guard or multiple data guard configuration. Switchover operation will convert primary side to data guard and data guard to primary side. You have to control listeners whether it is running before switchover steps. Switchover Steps Primary Side SQL> alter system archive log current; SQL>…
Oracle 11g R2 Multi Real Time Apply Data Guard Configuration Steps
Oracle 11g R2 database supports multi standby database structure up to 30 standby databases. We can use remote destinations for real time apply standby structures with todays network technologies. If your remote destination network is not good, you can use archivelog apply for remote destination with some delay. System informations are like below. System Informations…
Oracle 11g R2 Cascade Standby Data Guard Installation and Configuration Steps
Oracle 11g R2 database supports cascade standby database structure. If you are using RAC on primary side, your database version has to be least 11.2.0.2 to support cascade standby structure. You can use to reduce the load on your primary database with using cascade standby database structure. Primary database redo is written to the standby…
Oracle 12c R2 Downloadable Now
You can download Oracle 12c R2 database now. Only Linux x64 and Solaris Operation Systems supported for now. You can download with below link; http://www.oracle.com/technetwork/database/enterprise-edition/downloads/index.html Also you can find new features about of Oracle 12c R2 with below links; https://docs.oracle.com/database/122/ https://blogs.oracle.com/sql/entry/12_things_developers_will_love
Configure Default full-text language Parameter Server Configuration in SQL Server 2016
You can change default full-text language server configuration option in SQL Server 2016 by using SQL Server Management Studio or Transact-SQL. default full-text language option specifies a default language value for full-text indexes. Linguistic analysis is performed on all data that is full-text indexed and is dependent on the language of the data. The default value of…
Round Up A Number By Protecting 2 Decimal in Oracle
I will show how to round up a number by protecting 2 decimal. When I use round or ceil function, I can not have correct result. I want to round a number upwards with calculate 2 decimal. I want result like below examples. 1.2445 > 1.25 1.21 > 1.21 1.521 > 1.53 1.1 > 1.1…
How to Create Linked Server From SQL Server To SQL Server Database
You can connect another SQL Server database or different type database from SQL Server database with Linked Server feature. You can use below operations to create new linked server for SQL Server database to SQL Server database. Create Linked Server Steps Create a user on remote database to use connection and give permission on which…
How to Find Required Missing Indexes For Performance Tuning in SQL Server Database
Indexes play vital role for performance tuning on database systems. When you adjust correct indexes on tables, queries can run faster. Otherwise, a proper index can improve the performance and a bad index can hamper the performance. You can find missing indexes with below query. But, result of the query do not mean that you…
Check Service Status With Python on OEL 7 / Centos 7
I write a python code to check mysql service open or close. It is simple and you can change service_name parameter in the code to check another services. You can download from here check_service_status.py Below code maybe can not run because of python language format is tab structure. You can use with download original code…