You should create the tablespace as large as the total amount of data that you want to index. All data that is collected and processed as part of crawling and indexing is stored in this user's schema. The Oracle Ultra Search instance user is a database user that you must create. As a general guideline, the minimum requirements are as follows:ģGB of disk space is required for the Oracle Application Server Infrastructure or database and the Oracle Ultra Search backend.ġ5MB of disk space for the Oracle Ultra Search middle tier on top of the Web server's disk requirements.įor each remote crawler host 3GB of disk space is reequired.ĭisk space for a large TEMPORARY tablespace depends upon the amount of RAM on the host.ĭisk space for the Oracle Ultra Search instance user's tablespace.

Sufficient Disk Space As customer requirements vary widely, Oracle cannot recommend a specific amount of disk space.

Allocate enough memory for the HTTP Server as well as for the Java Development Kit (JDK) that runs the J2EE engine. Oracle recommends using the Oracle HTTP Server with the Oracle Application Server Containers for J2EE (OC4J). You need to allocate enough memory for the J2EE engine. You can install and run this on the same host as the Oracle Ultra Search backend. It can be installed and run on a separate host from the Oracle Ultra Search backend. The Oracle Ultra Search administration tool is a J2EE 1.2 standard Web application. When crawling very large amounts of data, these values might need to be adjusted. When the crawler is launched, the Java Virtual Machine (JVM) is configured to start with 25MB and grow to 256MB. The Oracle Ultra Search crawler is a pure Java program. Sufficient RAM Along with the resource requirements for the database and the Text indexing engine, also consider the memory requirements of the Oracle Ultra Search crawler. See Also: Oracle Text Application Developer's Guide and Oracle Database Performance Tuning Guide

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