Advantage Database Server Hardware Requirements

Advantage Database Server Hardware Requirements
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Advantage Database Server
Hardware Requirements
1 Requirements
1 Small Footprint
1 Processor Requirements
1 Memory
2 Hard Disk Space
2 Performance Tips
2 Conclusion
This document was created as a general guideline for planning application hardware requirements for Advantage
Database Server. Hardware requirements vary greatly based on functionality implemented by Advantage-enabled
applications. These applications are developed by Independent Software Vendors, which typically bundle Advantage
with their application. Only these vendors can accurately provide hardware requirements based on extensive testing
with their application. End-users should default to their software vendor’s recommendations for server hardware.
Minimum Requirements
Suggested Requirements
Minimum required by OS
1GHz or greater
Minimum required by OS
1 GB or greater depending on application
10 MB
> 10MB
Disk Space
Small Footprint
While many database servers seem to require greater and more costly hardware with every release, the Advantage
Database Server has extremely low hardware requirements. Advantage will install on nearly all Windows, Linux and
NetWare server operating systems. Designed for Independent Software Vendors, the server’s small installation can be
easily integrated with an application install CD or downloaded over the web. With Advantage 10, a consolidated Help
File adds approximately 8MB. This help file while extremely useful for development can be omitted in the final install
distribution package to make the footprint size even smaller.
Processor Requirements
Advantage performs extremely well on under-powered machines. For many applications Advantage will operate
on the minimum CPU that is required for the operating system. For example, a 133 MHz Pentium-compatible CPU
to run on Windows 2000 Server, or a 1GHz for Windows Server 2008. Nevertheless, a faster processor on the server
will usually improve performance for applications with many concurrent users or that use server-side filtering either
directly or via Advantage SQL.
Unfortunately, there’s not an exact formula for calculating process requirements. In most cases, servers should have
at least a 1 GHz CPU. Typically, a faster processor provides better performance, although applications that perform
little filtering and have few users may not benefit from a processor upgrade.
Advantage Database Server supports multiple processors on Windows, Linux and Netware (see the Advantage
Help file for additional details). Advantage Database Server is multi-threaded and will perform each user-requested
database operation concurrently or in parallel if multiple processors are present.
Compared to other database servers, Advantage requires very little RAM. SQL processing and transaction processing
will drive the demand for RAM on the server. If your application uses many SQL statements or does a large amount of
transaction processing, more than 1 GB of RAM would be recommended. Otherwise at least 1 GB is enough for many
Configuration settings such as the number of connections, work areas, tables, indexes, data locks and worker
threads use a static amount of RAM when the Advantage service starts. However, the amount is typically insignificant.
To view the amount of static RAM used by the Advantage Database Server, use the Remote Server Info utility, which is
built into the Advantage Data Architect (ARC). In ARC, select Tools from the main menu and select Remote Server Info.
The configuration parameters tab will display memory usage.
Hard Disk Space
The database server files are a mere 5 MB. The server will also need space available for the application data files
(table, memo and index files). This will vary by application.
In addition, Advantage may need additional space for creating temporary files for queries. Although these files are
deleted after the query is closed, these files can become large in certain situations. This space requirement also varies
based on queries that are executed by client applications.
Advantage will create an error log and it may create transaction processing files, if transactions are implemented.
Transaction processing files are typically small and are deleted after the transaction is complete.
Performance Tips
Before upgrading hardware to resolve performance issues, see the Performance Factors in the Advantage help file.
Additionally, the following tips have resolved many high CPU utilization issues:
• Use the query logging utility (Advantage v8.0 or higher) or analyze the application code to verify that all SQL
statements and filters are optimized using the SQL Debugger (Advantage Data Architect v9.0 or higher).
Statements or filters are optimized if they are able to use existing indexes. If statements or filters are not
optimized, additional processing is required by the server, which can be very CPU intensive. Building the
appropriate indexes resolves a majority of CPU utilization issues. Typically, end-users should contact their
software vendor for index specifications.
• If using DBF files, pack the tables. This will remove deleted records and re-build existing indexes.
• Upgrade to Advantage Database Server10 Version 10 is the fastest performing version of Advantage ever.
If CPU utilization is low, the network is typically the bottleneck for most application processes. Application
developers should implement as much server-side processing as possible, including SQL processing, stored procedures
and triggers. As a trouble-shooting step, the application can be run on the server to determine the network
performance lag. If performance improvement is dramatic, administrators can start to isolate the network to identify
faulty or slow network hardware.
Like most applications, Advantage Database Server performance improves with faster processors and more
memory. The improvement varies significantly based on the client application processes. Applications that perform
server-side operations (filters and SQL) and have multiple concurrent users will benefit more from hardware
upgrades. Again, this document should only be considered as a general guideline and should supplement existing
information in the Advantage Help files.
Sybase, Inc.
Worldwide Headquarters
One Sybase Drive
Dublin, CA 94568-7902
1 800 8 SYBASE
Copyright © 2010 Sybase, Inc. All rights reserved. Unpublished rights reserved under U.S. copyright laws. Sybase,
the Sybase logo, and Advantage Database Server are trademarks of Sybase, Inc. or its subsidiaries. All other trademarks
are the property of their respective owners. ® indicates registration in the United States. Specifications are subject to
change without notice. 07/10
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