Oracle Client Installation in Linux
ORACLE CLIENT INSTALLATION IN LINUXDownload oracle client (Version -> 10201_client_linux_x86_64.cpio.gz)gzip -d 10201_client_linux_x86_64.cpio.gzcpio -idmv < 10201_client_linux_x86_64.cpioLINUX...
View ArticleOracle Export and Import command
1. Log-on to server where Oracle is installed, go to $ORACLE_HOME/bin/Export schema oracle_db/oracle_db from orcl using the following command,exp userid= oracle_db/oracle_db@orcl...
View ArticleOracle Create a New DB Instance
Creating a New DB InstanceSteps for Creating New DB instance:1) Log-in to the DB server as oracle user.2) Move to the location $ORACLE_HOME/bin3) Execute the following command (oradb1 is the new db...
View ArticleOracle - DB Startup Failure unavailability of Datafile
Consider a scenario where you have accidentally deleted a DATA-FILE in oracle when the instance is running. It will throw error when you restart the DB as follows.1. Log-in to oracle DB server $...
View ArticleORACLE Query to find child tables
In this section we will see about how to find the child tables for a given parent table.In many projects where we deal with databases, we would like to find the list of child tables for a parent table....
View ArticleOracle Table Partition
Consider a scenario where you have huge number of records(say 1 million) in a database table and you are required to select 100,000 records from that table based on a condition given in where clause....
View ArticleOracle Create DB Link
In this section lets see about how to access DB objects from one Database to another database.Assume that you have two databases testlocalServ and testremoteServ. Log-in in to the database...
View ArticleOracle PL/SQL to delete child records
In this article lets discuss about how to delete a record(or row) from a table, if it has a tree of child tables (like child table has one or more child tables).
View ArticleLoad Data from Excel to Oracle database
In this article lets discuss about how to load data from an excel file in to oracle database table.In many application projects you may be faced with a requirement to export data from a database table...
View ArticleSQL Query Optimization
Often you may be faced with a requirement to optimize a SQL query (increase query running time) to be executed in Oracle database. Query Optimization in general is a huge topic to discuss. Let me...
View ArticleMaterialized Views
In this article let’s discuss about using Materialized views in Oracle. What is Materialized View? Materialized view is similar to a view but the actual table data will exist in the Database. These...
View ArticleOracle TableSpace
Tablespace A Tablespace in Oracle represents a location where the actual data related to tables, indexes will be stored. A database consists of one or more tablespace (tablespace made up of one or more...
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