Caché Installation Guide - InterSystems Documentation

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Calculating System Parameters for UNIX and Linux B.1.2.4 HP-UX Swap Space To display swap space for HP-UX: swapinfo (3M) # /usr/sbin/swapinfo KB KB KB PCT START/ KB TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME dev 524288 138260 386028 26% 0 - 1 /dev/vg00/lvol2 reserve - 78472 -78472 memory 195132 191668 3464 98% B.1.3 Calculate Disk Requirements In addition to the swap space you just calculated, you need disk space for the following items: • 67 MB for Caché. • 3 MB for the Caché Server Pages (CSP). • 3.5 MB for Caché ODBC support. • 2.5 MB for the Caché manager sources. • 6.6 MB for the Caché engine link libraries. • 3 MB for WebLink. • Space for your Caché application database. • Approximately 12.5% of the buffer pool size for the initial size of the write image journal file. If your disk does not have enough space for the write image journal file, when you start Caché it displays a message indicating that the system did not start. • Desired space for journal files. Although you do not need to remove any installation files after completing the installation procedure, you can do so if you are short on disk space. The installation program tells you how much space can be saved, and asks if you want to delete the installation files. B.1.4 Determine Number of Global Buffers Caché supports the following maximum values for the number of global buffers: • For 32-bit platforms, any co MBination of 2- KB and 8- KB buffers that are: - Less than 1 GB for HP-UX - Less than 2 GB for other 32-bit platforms 88 Caché Installation Guide
The 2-GB value is the total address space the operation system allocates for the process data, which includes not only shared memory, but other Caché and operating system data as well. Therefore, it represents an upper limit that is not achievable in practice. • For 64-bit platforms: Configure UNIX Kernel Parameters The number of global buffers is limited only by the operating system and the available memory. Note: Even if your configuration is using only 2- KB databases, some of the Caché databases, namely CACHESYS and CACHETEMP, are 8- KB. The system always sets aside a minimum of 200 8- KB buffers for these, regardless of what you specify. In general, increase this value, especially if you are making heavy use of Caché SQL. Set your values to less than the maximum number of buffers. B.1.5 Determine Number of Routine Buffers Caché supports the following maximum value for the number of routine buffers: 65,535 Set your values to less than this maximum number of buffers. B.1.6 Determine Maximum Number of Users The maximum users allowed by Caché is the lowest of the following values: • License limit • # of semaphores - 4 B.1.7 Determine Maximum Database Size The ulimit parameter in UNIX determines the maximum file size available to a process. For the Caché Manager group, the value of ulimit should either be unlimited or as large as the largest database you may have. B.2 Configure UNIX Kernel Parameters The following sections describe issues related to tuning and performance on various UNIX platforms: • Set Values for Tunable UNIX Parameters Caché Installation Guide 89
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Caché Installation Guide Version 2
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Table of Contents About This Book .
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5.1.2 Supported Platforms and Web S
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List of Tables Components Installed
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About This Book Default Caché Inst
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Upgrading Caché You may upgrade di
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2 Installing Caché on Microsoft Wi
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If you are installing Caché from a
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Caché Installation Component Group
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Caché Installation To perform a se
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is part of a Windows cluster, you m
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Caché Installation To perform a Ca
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Post-installation Tasks 7. The Read
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enable a previous Caché instance t
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Special Considerations Locale optio
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3 Installing Caché on OpenVMS This
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Caché Installation 3.2.1 Transfer
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Post-installation Tasks a. Owner of
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1. Check if times in Caché and Ope
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Special Considerations Note: This E
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