System Reporter 2.8

3PAR System Reporter User’s Guide

SQLite supports only limited database concurrency because it relies on a single file lock for the entire database. The sampling process needs exclusive access to the database when inserting new samples. If the database is very large or if there are a large number of concurrent web requests, the sampler or the Web server can time out. Furthermore, database compaction (see

7.2.1Compacting Databases on page 7.3) cannot be done in parallel with sample insertion so there could be a large gap in samples during database compaction.

Sampling of multiple InServ Storage Servers is not supported with an SQLite database, either the MySQL or the Oracle database servers should be used instead.

For large databases (over about 1 GB) or a large number of concurrent Web users, either the MySQL® or the Oracle database servers should be used instead.

NOTE: The optionally licensed Adaptive Optimization feature is not supported with the SQLite database. Please consider another database if you plan on utilizing the storage optimization capabilities provided by Adaptive Optimization.

3.8.1.2 MySQL

A MySQL database server can be used with System reporter but is not included with it. You must purchase it separately. MySQL is a good choice for System reporter because it supports MyISAM tables. These tables do not support transactions (which are not required for System Reporter) and are consequently somewhat higher performance than Oracle for sample insertion and deletion.

3.8.1.3 Oracle

Beginning with the 2.4 release, System Reporter also supports an Oracle 11g database server but it is not included with it. You must purchase it separately. Compared with MySQL, Oracle is slightly slower and more resource intensive for sample insertion and deletion. However, Oracle is also a good choice for large and active System Reporter installation.

NOTE: System Reporter does not currently support Oracle RAC implementations.

NOTE: System Reporter requires the 32-bit Oracle client and does not support the 64-bit version.

Installing the Database Server

3.15