Indexes. They're one of the most powerful and misunderstood aspects of SQL performance. In this post we'll look at the purpose of an index, how to create and choose choose your index type. Then finish with a discussion of how to decide what to index and
HOW TO USE ORACLE RESTART IN ORACLE 11GR2 Oracle Restart是数据库组件监控方法向单实例数据库中的延展,之前srvctl命令可以用来管理RAC数据库中的各个组件,安装了Oracle Restart之后,对于单实例数据库组件(包括数据库实例,监听,ASM实例,ASM磁盘组,自建Service等)也可以使用srvctl命令来管理,同时Oracle会在这些组件发生...
Yes. But, as always, there's more to it than this. You'll want to add some constraints to your table. And there are many types of table available in Oracle Database, including:Table Organization: Heap Index External Temporary Tables Partitioning Table Clusters Blockchain Tables...
因为audit_sys_operations=false/true时,sys的操作均不会记录到sys.aud$视图中,只有当audit_sys_operations=true时,才会记录到audit_file_dest目录中的*.aud文件中[oracle@localhost adump]$ cat ora_13020.aud OracleDatabase10g Enterprise Edition Release10.2.0.1.0-64bitProductionWiththe Partitioning, OLAPandDa...
To set “ORACLE_HOME”, open the “System Properties” and press the “Environment Variables” button. Add a new system variable by typing “ORACLE_HOME” in the “Variable name” and the path of the Oracle root directory in the “Variable value”, and click “OK”. This post demonstrated...
There are two implementations in Oracle WebLogic Server to support Oracle RAC: the multi data source solution, and the new implementation in WebLogic 10.3.4 called Oracle WebLogic Active GridLink for RAC. This how-to compares the approaches.
Oracle SQL Developer provides a SQL Worksheet that you can use to update data, by writing simple or complex SQL statements. In this How-To, we look at the most basic of these, inserting a record, updating single and multiple records and deleting single or multiple records. ...
How to used ROWID in oracle_fdw?#74 hi@laurenz I create oracle_fdw table create foreign table test( col1 text, ... rowid text ); why not used rowid? laurenz added enhancement on Mar 25, 2016 laurenz commentedon Mar 25, 2016 ...
First, if you want to connect to Oracle with a native 64-bit connection, you have to use the Oracle-written OLE DB provider for Oracle because the Microsoft-written OLE DB driver for Oracle isavailableonly in a 32-bit mode. Be sure you also install the right 64-bit Oracle client (Itani...
oracle-how use string data in(in运算符)还有一个选择：