informix V11 SDS配置
NBU备份informix操作配置方法
NBU备份informix操作配置方法NetBackup for Informix OverviewThe following example network shows the major components in a NetBackup for Informix configuration. The server that is hosting the Informix database must be a NetBackup client, and it must have NetBackup for Informix and the Informix ON-Bar utility installed.安装NetBackup Agent for Informix参见《NetBackup_AdminGuide_Informix》对informix做必要的配置，链接Agent 和informix1. 转到以下目录:/usr/openv/netbackup/bin2. 运行下面的脚本:./informix_config提示输入informix实例主录:Please specify the Informix instance home path name:3. 却保输入正确的informix实例主目录，当命令结束后，再检查下面的配置。
4. 验证以下文件的内容：$INFORMIXDIR/etc/sm_versions1|1.1.0|VERITAS-NetBackup|15. 确保$INFORMIXDIR/etc/$ONCONFIG中 $BAR_BSALIB_PATH的值正确的指向NetBackup目录的/usr/openv/netbackup/bin/infxbsa.[so,sl,a]且文件的权限是7557. 设置$INFORMIXDIR/etc/$ONCONFIG中的 BAR_RETRY 的值为5.8. 修改$INFORMIXDIR/etc/$ONCONFIG文件中LTAPEDEV参数值为/dev/tapedev。
实战：informix11.5版本安装、配置HDR容灾节点
IBM Informix Dynamic Server Version 11.50.FC9 -- Updatable (Sec) -- Up 00:04:27 -- 19633840 Kbytes
◆三个节点配置的CM启用了负载均衡，如下：
11:41:35 SLA qxgl redirect SQLI client from 10.19.65.139 to rmsdb_sds 10.19.65.164.9977
11:41:36 SLA qxgl redirect SQLI client from 10.19.65.139 to rmsdb_sds 10.19.65.164.9977
11:51:16 SLA qxgl redirect SQLI client from 10.19.65.139 to rmsdb_sds 10.19.65.164.9977
可见SLA qxgl分配到了不同的数据库server，实现了负载均衡的效果。再看刚才的log：
rmsdb_sds@sdwgpm2:/opt/IBM/informix/tmp>tail -f cm_rmsdb.log
IBM Informix Dynamic Server Version 11.50.FC9 -- On-Line (Prim) -- Up 4 days 18:53:50 -- 19633840 Kbytes
rmsdb_sds@sdwgpm2:/u1/informix>onstat -
IBM Informix Dynamic Server Version 11.50.FC9 -- Updatable (SDS) -- Up 4 days 18:52:27 -- 19633840 Kbytes
Informix 11
注意：此配置文档仅当需手动配置Informix参数时使用，且onmonitor数据配置实质是对/home/informix/etc 下的onconfig.icdep 文件进行修改。
所以，当不需要手动配置时，可直接将onmonitor配置文件夹下的onconfig.icdep 和sqlhosts 文件进行替换，替换之后直接执行初始化命令oninity –ivy 对Informix进行初始化，注意此命令将删除所有数据。
无论是手动配置还是替换文件，都需要进行第3步，对/etc/services下的服务器端口开放的设置。
目录1、检查数据库是否安装成功： (2)2、sqlhosts文件配置： (2)3、服务器端口开放： (2)4、进行数据配置： (3)Informix的onmonitor属性配置1、检查数据库是否安装成功：在软件安装好之后，在Informix用户下使用命令onmonitor 检查是否安装成功，如果出现以下界面则表示安装成功。
2、sqlhosts文件配置：sqlhosts文件位于/home/informix/etc下，在文件中添加如下代码：icdep onsoctcp 172.21.72.20 icdep3、服务器端口开放：在root用户下，在/etc/services 文件中加入如下代码（6666为端口号）：icdep 6666/tcp4、进行数据配置：在informix用户下，执行命令onmiontor进入配置界面：在此进行数据配置，具体的配置信息如下：（A-B 表示，进入A，在A下选择B进行相关信息配置）Parameters-Initialize：Parameters- Shared-Memory：Parameters- perFormance：Parameters- data-Replication：Parameters- diaGnostics：Parameters-pdQ：（此图为onconfig.icdep文件中数据）Dbspace-Info：Dbspace-Info具体如下：。
实验5Informix软件安装及配置
实验5Informix软件安装及配置informix安装配置实验指导书深圳市讯⽅通信技术有限公司2009年8⽉⽬录1. 实验⽬的 (4)2. 实验器材 (4)3. 实验内容说明 (4)4. 实验步骤 (4)4.1安装INFORMIX前准备 (4)4.1.1 增加informix⽤户组 (4)4.1.2 增加informix⽤户 (5)4.1.3 激活informix⽤户 (5)4.2安装I NFORMIX数据库 (5)4.2.1 上传⽂件到服务器 (5)4.2.2 执⾏安装 (5)4.3配置INFORMIX数据库 (13)4.3.1 创建错误信息⽬录 (13)4.3.2 设置环境变量 (14)4.3.3 增加数据库服务信息 (14)4.3.4 配置数据库服务端⼝ (15)4.3.5 检查⽂件配置 (15)4.3.6 创建rootdbs数据库空间 (16)4.3.7 配置onconfig⽂件 (16)4.3.8 初始化数据库 (18)4.3.9 查看数据库运⾏状态 (18)4.3.10 启动后创建⽤户空间 (18)4.3.11 创建命令 (19)4.4启动关闭数据库 (20)5. 附录A：INFROMIX常⽤命令 (20)5.1 ONINIT (20)5.1.1 功能说明 (20)5.1.2 使⽤说明 (21)5.1.3 举例说明 (21)5.2 ONMODE (21)5.2.1 功能简述 (21)5.2.2 使⽤说明 (21)5.2.3 举例说明 (23)5.3 ONSPACES (23)5.3.1 功能简述 (23)5.3.2 使⽤说明 (23)5.3.3 举例说明 (24)5.4 ONSTAT (24)5.4.1 功能简述 (24)5.4.2 使⽤说明 (24)1. 实验⽬的1、通过本实验，让学⽣了解informix软件安装及配置。
2、了解informix软件特点，熟悉基本数据库操作。
2. 实验器材1、安装Linux AS4以上版本操作系统的PC机⼀台（或者LinuxAS4操作系统安装在虚拟机上）；2、informix数据库软件⼀套；3. 实验内容说明informix是IBM公司出品的关系数据库管理系统（RDBMS）家族。
informix安装及配置
Informix生产系统安装及配置一、ApplicationDB数据库安装与配置1、创建用户和用户组创建informix用户和informix组Informix用户挂载点/Informix2、修改环境变量修改informix用户的.profile文件，Vi .profile 添加以下内容：INFORMIXDIR=/Informix;PATH=$INFORMIXDIR/bin:$PATH;ONCONFIG=onconfig.loan;INFORMIXSERVER=loandb;export INFORMIXDIR PATH ONCONFIG INFORMIXSERVERexport TERM=vt100TERMINFO=$INFORMIXDIR/etc/typetab;TERMCAP=$INFORMIXDIR/etc/termcap;DBDATE=Y4MD-;Export TERMINFOR TERMCAP DBDATE3、安装数据库及组件Csdk安装：1）Cd /opt/Informix_setup/csdk2）Chmod 777 installclientsdk3）./installclientsdk4）根据安装向导填写安装路径/informix，其他选项按默认值选择，之后开始安装IDS安装：1)Cd /opt/Informix_setup/server2)Chmod 777 installserver3)./installserver4)根据安装向导填写安装路径/informix，其他选项按默认值选择，之后开始安装4、更改磁盘设备信息属组及权限并链接设备文件将所有为AppliactionDB数据库创建的裸设备的字符型设备文件（c类型）的属组更改为informix:InformixCd /devChownInformix:Informixrloan* rflow* rtemp* rphy* rlog*将所有为AppliactionDB数据库创建的裸设备的字符型设备文件（c类型）的权限更改为660Chmod 660 rloan* rflow* rtemp* rphy* rlog*Su –InformixMkdir data将所有为AppliactionDB数据库创建的裸设备的字符型设备文件（c类型）软链接到该目录下，例如：Ln –s /dev/rloan_rootdbsloan_rootdbs链接所在目录：Loan_data_01:/Informix/data/loan_data/Loan_data_02:/Informix/data/loan_data/Loan_index_data:/Informix/data/loan_index/Flow_data_01:/Informix/data/flow_data/Flow_data_02:/Informix/data/flow_data/Flow_index_data:/Informix/data/flow_index/Tempdbs:/Informix/data/temp_data/Rootdbs:/Informix/data/Phy_loan_log:/Informix/data/Log_loan_log:/Informix/data/5、创建onconfig脚本Su –InformixCd etcCponconfig.stdonconfig.loanOnconfig参数修改：################################################################### # Licensed Material - Property Of IBM## "Restricted Materials of IBM"## IBM Informix Dynamic Server# Copyright IBM Corporation 1996, 2009. All rights reserved.## Title: onconfig.std# Description: IBM Informix Dynamic Server Configuration Parameters ## Important: $INFORMIXDIR now resolves to the environment# variable INFORMIXDIR. Replace the value of the INFORMIXDIR# environment variable only if the path you want is not under# $INFORMIXDIR.## For additional information on the parameters:# /infocenter/idshelp/v115/index.jsp####################################################################################################################################### Root Dbspace Configuration Parameters#################################################################### ROOTNAME - The root dbspace name to contain reserved pages and # internal tracking tables.# ROOTPATH - The path for the device containing the root dbspace # ROOTOFFSET - The offset, in KB, of the root dbspace into the# device. The offset is required for some raw devices. # ROOTSIZE - The size of the root dbspace, in KB. The value of # 200000 allows for a default user space of about# 100 MB and the default system space requirements.# MIRROR - Enable (1) or disable (0) mirroring# MIRRORPATH - The path for the device containing the mirrored# rootdbspace# MIRROROFFSET - The offset, in KB, into the mirrored device## Warning: Always verify ROOTPATH before performing# disk initialization (oninit -i or -iy) to# avoid disk corruption of another instance###################################################################ROOTNAME rootdbsROOTPATH $INFORMIXDIR/data/loan_rootdbs（修改到rootdbs所在目录）ROOTOFFSET 256 （偏移量256K）ROOTSIZE 4000000（大小4G）MIRROR 0MIRRORPATH $INFORMIXDIR/tmp/demo_on.root_mirrorMIRROROFFSET 0#################################################################### Physical Log Configuration Parameters#################################################################### PHYSFILE - The size, in KB, of the physical log on disk. # If RTO_SERVER_RESTART is enabled, the# suggested formula for the size of PHSYFILE# (up to about 1 GB) is:# PHYSFILE = Size of BUFFERS * 1.1# PLOG_OVERFLOW_PATH - The directory for extra physical log files# if the physical log overflows during recovery # or long transaction rollback# PHYSBUFF - The size of the physical log buffer, in KB###################################################################PHYSFILE 39000000PLOG_OVERFLOW_PATH $INFORMIXDIR/tmpPHYSBUFF 128################################################################### # Logical Log Configuration Parameters################################################################### # LOGFILES - The number of logical log files# LOGSIZE - The size of each logical log, in KB# DYNAMIC_LOGS - The type of dynamic log allocation.# Acceptable values are:# 2 Automatic. IDS adds a new logical log to the# root dbspace when necessary.# 1 Manual. IDS notifies the DBA to add new logical # logs when necessary.# 0 Disabled# LOGBUFF - The size of the logical log buffer, in KB###################################################################LOGFILES 250LOGSIZE 10000DYNAMIC_LOGS 2LOGBUFF 64################################################################### # Long Transaction Configuration Parameters################################################################### # If IDS cannot roll back a long transaction, the server hangs# until more disk space is available.## LTXHWM - The percentage of the logical logs that can be# filled before a transaction is determined to be a # long transaction and is rolled back# LTXEHWM - The percentage of the logical logs that have been # filled before the server suspends all other# transactions so that the long transaction being# rolled back has exclusive use of the logs## When dynamic logging is on, you can set higher values for# LTXHWM and LTXEHWM because the server can add new logical logs# during long transaction rollback. Set lower values to limit the # number of new logical logs added.## If dynamic logging is off, set LTXHWM and LTXEHWM to# lower values, such as 50 and 60 or lower, to prevent long# transaction rollback from hanging the server due to lack of# logical log space.## When using Enterprise Replication, set LTXEHWM to at least 30%# higher than LTXHWM to minimize log overruns.###################################################################LTXHWM 70LTXEHWM 80################################################################### # Server Message File Configuration Parameters################################################################### # MSGPATH - The path of the IDS message log file# CONSOLE - The path of the IDS console message file###################################################################MSGPATH $INFORMIXDIR/online_loan.logCONSOLE $INFORMIXDIR/tmp/online.con################################################################### # Tblspace Configuration Parameters################################################################### # TBLTBLFIRST - The first extent size, in KB, for the tblspace # tblspace. Must be in multiples of the page size. # TBLTBLNEXT - The next extent size, in KB, for the tblspace# tblspace. Must be in multiples of the page size. # The default setting for both is 0, which allows IDS to manage# extent sizes automatically.## TBLSPACE_STATS - Enables (1) or disables (0) IDS to maintain# tblspace statistics###################################################################TBLTBLFIRST 0TBLTBLNEXT 0TBLSPACE_STATS 1################################################################### # Temporary dbspace and sbspace Configuration Parameters################################################################### # DBSPACETEMP - The list of dbspaces used to store temporary# tables and other objects. Specify a colon# separated list of dbspaces that exist when the# server is started. If no dbspaces are specified,# or if all specified dbspaces are not valid,# temporary files are created in the /tmp directory# instead.# SBSPACETEMP - The list of sbspaces used to store temporary# tables for smart large objects. If no sbspace# is specified, temporary files are created in# a standard sbspace.###################################################################DBSPACETEMP tempdbsSBSPACETEMP################################################################### # Dbspace and sbspace Configuration Parameters################################################################### # SBSPACENAME - The default sbspace name where smart large objects # are stored if no sbspace is specified during# smart large object creation. Some DataBlade# modules store smart large objects in this# location.# SYSSBSPACENAME - The default sbspace for system statistics# collection. Otherwise, IDS stores statistics# in the sysdistrib system catalog table.# ONDBSPACEDOWN - Specifies how IDS behaves when it encounters a# dbspace that is offline. Acceptable values# are:# 0 Continue# 1 Stop# 2 Wait for DBA action###################################################################SBSPACENAMESYSSBSPACENAMEONDBSPACEDOWN 2################################################################### # System Configuration Parameters################################################################### # SERVERNUM - The unique ID for the IDS instance. Acceptable # values are 0 through 255, inclusive.# DBSERVERNAME - The name of the default database server# DBSERVERALIASES - The list of up to 32 alternative dbservernames, # separated by commas###################################################################SERVERNUM 0DBSERVERNAME loandbDBSERVERALIASES loandbshm################################################################### # Network Configuration Parameters################################################################### # NETTYPE - The configuration of poll threads# for a specific protocol. The# format is:# NETTYPE <protocol>,<# poll threads> # ,<number of connections/thread># ,(NET|CPU)# You can include multiple NETTYPE# entries for multiple protocols.# LISTEN_TIMEOUT - The number of seconds that IDS# waits for a connection# MAX_INCOMPLETE_CONNECTIONS - The maximum number of incomplete# connections before IDS logs a Denial # of Service (DoS) error# FASTPOLL - Enables (1) or disables (0) fast# polling of your network, if your# operating system supports it.###################################################################NETTYPE s octcp,8,500,NET （网络协议用户4000）NETTYPE ipcshm,2,50,CPU （内存通道用户100）LISTEN_TIMEOUT 60MAX_INCOMPLETE_CONNECTIONS 1024FASTPOLL 1################################################################### # CPU-Related Configuration Parameters################################################################### # MULTIPROCESSOR - Specifies whether the computer has multiple # CPUs. Acceptable values are: 0 (single# processor), 1 (multiple processors or# multi-core chips)# VPCLASS cpu - Configures the CPU VPs. The format is:# VPCLASS cpu,num=<#>[,max=<#>][,aff=<#>]# [,noage]# VP_MEMORY_CACHE_KB - Specifies the amount of private memory# blocks of your CPU VP, in KB, that the# database server can access.# Acceptable values are:# 0 (disable)# 800 through 40% of the value of SHMTOTAL# SINGLE_CPU_VP - Optimizes performance if IDS runs with# only one CPU VP. Acceptable values are:# 0 multiple CPU VPs# Any nonzero value (optimize for one CPU VP) ###################################################################MULTIPROCESSOR 1VPCLASS cpu,num=8,noageVP_MEMORY_CACHE_KB 0SINGLE_CPU_VP 0################################################################### # AIO and Cleaner-Related Configuration Parameters################################################################### # VPCLASS aio - Configures the AIO VPs. The format is:# VPCLASS aio,num=<#>[,max=<#>][,aff=<#>][,noage] # CLEANERS - The number of page cleaner threads# AUTO_AIOVPS - Enables (1) or disables (0) automatic management # of AIO VPs# DIRECT_IO - Specifies whether direct I/O is used for cooked# files used for dbspace chunks.# Acceptable values are:# 0 Disable# 1 Enable direct I/O# 2 Enable concurrent I/O####################################################################VPCLASS aio,num=1CLEANERS 8AUTO_AIOVPS 1DIRECT_IO 0################################################################### # Lock-Related Configuration Parameters################################################################### # LOCKS - The initial number of locks when IDS starts. # Dynamic locking can add extra locks if needed. # DEF_TABLE_LOCKMODE - The default table lock mode for new tables.# Acceptable values are ROW and PAGE (default). ###################################################################LOCKS 1000000DEF_TABLE_LOCKMODE row################################################################### # Shared Memory Configuration Parameters################################################################### # RESIDENT - Controls whether shared memory is resident.# Acceptable values are:# 0 off (default)# 1 lock the resident segment only# n lock the resident segment and the next n-1# virtual segments, where n < 100# -1 lock all resident and virtual segments# SHMBASE - The shared memory base address; do not change# SHMVIRTSIZE - The initial size, in KB, of the virtual# segment of shared memory# SHMADD - The size, in KB, of additional virtual shared# memory segments# EXTSHMADD - The size, in KB, of each extension shared# memory segment# SHMTOTAL - The maximum amount of shared memory for IDS,# in KB. A 0 indicates no specific limit.# SHMVIRT_ALLOCSEG - Controls when IDS adds a memory segment and# the alarm level if the memory segment cannot# be added.# For the first field, acceptable values are:# - 0 Disabled# - A decimal number indicating the percentage# of memory used before a segment is added# - The number of KB remaining when a segment# is added# For the second field, specify an alarm level# from 1 (non-event) to 5 (fatal error).# SHMNOACCESS - A list of up to 10 memory address ranges# that IDS cannot use to attach shared memory.# Each address range is the start and end memory # address in hex format, separated by a hyphen. # Use a comma to separate each range in the list. ###################################################################RESIDENT 0SHMBASE 0x700000010000000SHMVIRTSIZE 32656SHMADD 8192EXTSHMADD 8192SHMTOTAL 0SHMVIRT_ALLOCSEG 0,3SHMNOACCESS################################################################### # Checkpoint and System Block Configuration Parameters################################################################### # CKPINTVL - Specifies how often, in seconds, IDS checks# if a checkpoint is needed. 0 indicates that# IDS does not check for checkpoints. Ignored # if RTO_SERVER_RESTART is set.# AUTO_CKPTS - Enables (1) or disables (0) monitoring of# critical resource to trigger checkpoints# more frequently if there is a chance that# transaction blocking might occur.# RTO_SERVER_RESTART - Specifies, in seconds, the Recovery Time# Objective for IDS restart after a server# failure. Acceptable values are 0 (off) and# any number from 60-1800, inclusive.# BLOCKTIMEOUT - Specifies the amount of time, in seconds,# for a system block.###################################################################CKPTINTVL 1800AUTO_CKPTS 1RTO_SERVER_RESTART 0BLOCKTIMEOUT 3600################################################################### # Transaction-Related Configuration Parameters################################################################### # TXTIMEOUT - The distributed transaction timeout, in seconds# DEADLOCK_TIMEOUT - The maximum time, in seconds, to wait for a# lock in a distributed transaction.# HETERO_COMMIT - Enables (1) or disables (0) heterogeneous# commits for a distributed transaction# involving an EGM gateway.###################################################################TXTIMEOUT 300DEADLOCK_TIMEOUT 60HETERO_COMMIT 0################################################################### # ontape Tape Device Configuration Parameters################################################################### # TAPEDEV - The tape device path for backups. To use standard# I/O instead of a device, set to stdio.# TAPEBLK - The tape block size, in KB, for backups# TAPESIZE - The maximum amount of data to put on one backup# tape. Acceptable values are 0 (unlimited) or any# positive integral multiple of TAPEBLK.###################################################################TAPEDEV /dev/nullTAPEBLK 32TAPESIZE 0################################################################### # ontapeLogial Log Tape Device Configuration Parameters################################################################### # LTAPEDEV - The tape device path for logical logs# LTAPEBLK - The tape block size, in KB, for backing up logical # logs# LTAPESIZE - The maximum amount of data to put on one logical# log tape. Acceptable values are 0 (unlimited) or any # positive integral multiple of LTAPEBLK.###################################################################LTAPEDEV /dev/nullLTAPEBLK 32LTAPESIZE 0################################################################### # Backup and Restore Configuration Parameters#################################################################### BAR_ACT_LOG - The ON-Bar activity log file location.# Do not use the /tmp directory. Use a# directory with restricted permissions.# BAR_DEBUG_LOG - The ON-Bar debug log file location.# Do not use the /tmp directory. Use a# directory with restricted permissions.# BAR_DEBUG - The debug level for ON-Bar. Acceptable# values are 0 (off) through 9 (high).# BAR_MAX_BACKUP - The number of backup threads used in a# backup. Acceptable values are 0 (unlimited)# or any positive integer.# BAR_RETRY - Specifies the number of time to retry a# backup or restore operation before reporting # a failure# BAR_NB_XPORT_COUNT - Specifies the number of data buffers that# eachonbar_d process uses to communicate# with the database server# BAR_XFER_BUF_SIZE - The size, in pages, of each data buffer.# Acceptable values are 1 through 15 for# 4 KB pages and 1 through 31 for 2 KB pages.# RESTARTABLE_RESTORE - Enables ON-Bar to continue a backup after a# failure. Acceptable values are OFF or ON.# BAR_PROGRESS_FREQ - Specifies, in minutes, how often progress# messages are placed in the ON-Bar activity# log. Acceptable values are: 0 (record only# completion messages) or 5 and above.# BAR_BSALIB_PATH - The shared library for ON-Bar and the# storage manager. The default value is# $INFORMIXDIR/lib/ibsad001 (with a# platform-specific file extension).# BACKUP_FILTER - Specifies the pathname of a filter program# to transform data during a backup, plus any# program options# RESTORE_FILTER - Specifies the pathname of a filter program# to transform data during a restore, plus any # program options# BAR_PERFORMANCE - Specifies the type of performance statistics# to report to the ON-Bar activity log for backup # and restore operations.# Acceptable values are:# 0 = Turn off performance monitoring (Default) # 1 = Display the time spent transferring data # between the IDS instance and the storage # manager# 2 = Display timestamps in microseconds# 3 = Display both timestamps and transfer # statistics###################################################################BAR_ACT_LOG $INFORMIXDIR/tmp/bar_act.logBAR_DEBUG_LOG $INFORMIXDIR/tmp/bar_dbug.logBAR_DEBUG 0BAR_MAX_BACKUP 0BAR_RETRY 1BAR_NB_XPORT_COUNT 20BAR_XFER_BUF_SIZE 31RESTARTABLE_RESTORE ONBAR_PROGRESS_FREQ 0BAR_BSALIB_PATHBACKUP_FILTERRESTORE_FILTERBAR_PERFORMANCE 0################################################################### # Informix Storage Manager (ISM) Configuration Parameters################################################################### # ISM_DATA_POOL - Specifies the name for the ISM data pool# ISM_LOG_POOL - Specifies the name for the ISM log pool###################################################################ISM_DATA_POOL ISMDataISM_LOG_POOL ISMLogs################################################################### # Data Dictionary Cache Configuration Parameters################################################################### # DD_HASHSIZE - The number of data dictionary pools. Set to any# positive integer; a prime number is recommended. # DD_HASHMAX - The number of entries per pool.# Set to any positive integer.###################################################################DD_HASHSIZE 31DD_HASHMAX 10################################################################### # Data Distribution Configuration Parameters#################################################################### DS_HASHSIZE - The number of data Ddstribution pools.# Set to any positive integer; a prime number is# recommended.# DS_POOLSIZE - The maximum number of entries in the data# distribution cache. Set to any positive integer.###################################################################DS_HASHSIZE 31DS_POOLSIZE 127################################################################### User Defined Routine (UDR) Cache Configuration Parameters################################################################### PC_HASHSIZE - The number of UDR pools. Set to any# positive integer; a prime number is recommended.# PC_POOLSIZE - The maximum number of entries in the# UDR cache. Set to any positive integer.###################################################################PC_HASHSIZE 31PC_POOLSIZE 127#################################################################### SQL Statement Cache Configuration Parameters#################################################################### STMT_CACHE - Controls SQL statement caching. Acceptable# values are:# 0 Disabled# 1 Enabled at the session level# 2 All statements are cached# STMT_CACHE_HITS - The number of times an SQL statement must be# executed before becoming fully cached.# 0 indicates that all statements are# fully cached the first time.# STMT_CACHE_SIZE - The size, in KB, of the SQL statement cache# STMT_CACHE_NOLIMIT - Controls additional memory consumption.# Acceptable values are:# 0 Limit memory to STMT_CACHE_SIZE# 1 Obtain as much memory, temporarily, as needed # STMT_CACHE_NUMPOOL - The number of pools for the SQL statement# cache. Acceptable value is a positive# integer between 1 and 256, inclusive.###################################################################STMT_CACHE 0STMT_CACHE_HITS 0STMT_CACHE_SIZE 512STMT_CACHE_NOLIMIT 0STMT_CACHE_NUMPOOL 1################################################################### # Operating System Session-Related Configuration Parameters################################################################### # USEOSTIME - The precision of SQL statement timing.# Accepted values are 0 (precision to seconds)# and 1 (precision to subseconds). Subsecond# precision can degrade performance.# STACKSIZE - The size, in KB, for a session stack# ALLOW_NEWLINE - Controls whether embedded new line characters # in string literals are allowed in SQL# statements. Acceptable values are 1 (allowed) # and any number other than 1 (not allowed).# USELASTCOMMITTED - Controls the committed read isolation level.# Acceptable values are:# - NONE Waits on a lock# - DIRTY READ Uses the last committed value in # place of a dirty read# - COMMITTED READ Uses the last committed value # in place of a committed read# - ALL Uses the last committed value in place # of all isolation levels that support the last # committed option###################################################################USEOSTIME 0STACKSIZE 64ALLOW_NEWLINE 0USELASTCOMMITTED NONE################################################################### # Index Related Configuration Parameters################################################################### # FILLFACTOR - The percentage of index page fullness# MAX_FILL_DATA_PAGES - Enables (1) or disables (0) filling data# pages that have variable length rows as# full as possible# BTSCANNER - Specifies the configuration settings for all # btscanner threads. The format is:# BTSCANNER num=<#>,threshold=<#>,rangesize=<#>, # alice=(0-12),compression=[low|med|high|default] # ONLIDX_MAXMEM - The amount of memory, in KB, allocated for# the pre-image pool and updator log pool for# each partition.###################################################################FILLFACTOR 90MAX_FILL_DATA_PAGES 0BTSCANNER num=1,threshold=5000,rangesize=-1,alice=6,compression=default ONLIDX_MAXMEM 5120#################################################################### Parallel Database Query (PDQ) Configuration Parameters#################################################################### MAX_PDQPRIORITY - The maximum amount of resources, as a# percentage, that PDQ can allocate to any# one decision support query# DS_MAX_QUERIES - The maximum number of concurrent decision# support queries# DS_TOTAL_MEMORY - The maximum amount, in KB, of decision# support query memory# DS_MAX_SCANS - The maximum number of concurrent decision# support scans# DS_NONPDQ_QUERY_MEM - The amount of non-PDQ query memory, in KB.# Acceptable values are 128 to 25% of# DS_TOTAL_MEMORY.# DATASKIP - Specifies whether to skip dbspaces when# processing a query. Acceptable values are:# - ALL Skip all unavailable fragments# - ON <dbspace1><dbspace2>... Skip listed# dbspaces# - OFF Do not skip dbspaces (default)###################################################################MAX_PDQPRIORITY 100DS_MAX_QUERIESDS_TOTAL_MEMORYDS_MAX_SCANS 1048576DS_NONPDQ_QUERY_MEM 128DATASKIP#################################################################### Optimizer Configuration Parameters# OPTCOMPIND - Controls how the optimizer determines the best# query path. Acceptable values are:# 0 Nested loop joins are preferred# 1 If isolation level is repeatable read,# works the same as 0, otherwise works same as 2# 2 Optimizer decisions are based on cost only# DIRECTIVES - Specifies whether optimizer directives are# enabled (1) or disabled (0). Default is 1.# EXT_DIRECTIVES - Controls the use of external SQL directives.# Acceptable values are:# 0 Disabled# 1 Enabled if the IFX_EXTDIRECTIVES environment# variable is enabled# 2 Enabled even if the IFX_EXTDIRECTIVES# environment is not set# OPT_GOAL - Controls how the optimizer should optimize for# fastest retrieval. Acceptable values are:# -1 All rows in a query# 0 The first rows in a query# IFX_FOLDVIEW - Enables (1) or disables (0) folding views that# have multiple tables or a UNION ALL clause.# Disabled by default.# AUTO_REPREPARE - Enables (1) or disables (0) automatically# re-optimizing stored procedures and re-preparing# prepared statements when tables that are referenced # by them change. Minimizes the occurrence of the# -710 error.####################################################################OPTCOMPIND 2DIRECTIVES 1EXT_DIRECTIVES 0OPT_GOAL -1IFX_FOLDVIEW 0AUTO_REPREPARE 1#################################################################### Read-ahead Configuration Parameters####################################################################RA_PAGES - The number of pages, as a positive integer, to# attempt to read ahead#RA_THRESHOLD - The number of pages, as a postive integer, left# before the next read-ahead group。
轻松掌握Informix多方面的参数设置对性能的影响-电脑资料
轻松掌握Informix多方面的参数设置对性能的影响-电脑资料注释：（应使用原始磁盘空间，不要使用文件系统空间，。
）原始磁盘空间意味着通过一个字符模式特殊文件（在ls -l 命令显示的第一列总出现的一个'c')访问一个原始磁盘分区，不是指磁盘空间相关联的块模式特殊文件（为ls -l 命令显示的第1列为'b')，也不是指卷管理控制设备以及其它任何不是原始磁盘分区的设备。
更新统计这是十分重要的。
当相关各列上的数值分布发生明显变化时，适时运行UPDATE STATISTICS命令后能使数据分布和统计数据得到更新。
对建有索引的列运行UPDATE STATISTICS HIGH，对其它所有列使用UPDATE STATISTICS MEDIUM.由于UPDATE STATISTICS处理的内部并行程度低，因而使用多个并发任务进行更新统计会改善全局的吞吐量。
可能需要增加DBUPSPACE 环境变量的值。
预读对非并行顺序扫描（只对数据、只按索引，按索引/数据）十分有用。
通过onstat -p监测。
如果ixda-RA,idx_RA及da_RA的总和与RA-pgsused接近，则要增加预读参数，如果它们的总和远远小于RA-pgsused,则要减小相应参数，通常保持RA_PAGES<=32,并使RA_THRESHOLD大约等于PA_PAGES的一半。
OLTP与DSSOLTP的特点:用户多高事务率在数据处理方面，事务相对较小明显的页操作（插入/更新/删除）通过索引的快速数据访问高度使用缓冲区快速缓存并行范围有限DSS特点涉及大量数据很少的写操作（除临时空间和数据加载之外）用户相对较少处理大批数据的大量、复杂查询主要通过顺序扫描访问数据并行范围广磁盘分布与分片磁盘硬件的选项：传输速度高，定位时间少大量的小盘比少量的大盘好避免控制器过载将Online磁盘空间与其它系统操作分开文件系统交换空间将物理、逻辑日志分开对于有大量的写操作（插入、更新、删除）的任何Online应用环境应将逻辑和物理日志分别放在不同的磁盘/控制器上。
Informix11.5 for windows 安装配置
Informix 11.50 for Windows安装配置一、测试环境
操作系统：Windows Server 2008 64bit
Informix版本：Informix Ultimate Edition 11.5 for Windows 64
二、安装
1.解压iif.11.50.FC9TL.win2003.zip文件，双击运行setup.exe进行安装。
2.选项需要安装的组件包（这里使用了默认的IDS,DBDK,CSDK）
3.点击Next继续执行
4.阅读并接受协议，点击Next
5.选择Typical方式进行安装
6.选择安装目录，这里安装路径设置为“E:\informix11.5”。
7.设置informix 用户密码
8.确认安装信息，点击“Next”
9.等待IDS安装结束，点击“Finish”。
10.自动加载DBDK安装程序
11.点击Next执行安装
12.设置DBDK安装目录
13.点击Done完成DBDK安装
14.自动加载CSDK安装程序
15.选择接受许可协议
16.设置本地信息，默认Windows用户
17.选择Custom进行安装
18.为Client-SDK设置路径
19.点击Next后，进行安装
20.完成CSDK 安装
21.全部完成安装后，程序组里增加了IDS,DBDK,CSDK 三组，在IDS 的程序组里：以数据库服务名(ids1150)为标题的链接可视为informix 的console 接口，server instance manager 可以管理instance，modifyinstallation 可以管理informix 安装组件。
Informix数据库参数设置说明资料
Informix数据库参数设置说明
本说明从INFORMIX数据库的认证授权功能、安全日志功能，和其他自身安全配置功能提出安全要求。
1.账号
INFORMIX应提供账号管理及认证授权功能，并应满足以下各项要求。
编号：安全要求-设备-INFORMIX-配置-1
编号：安全要求-设备-INFORMIX-配置-2
2.口令
编号：安全要求-设备-INFORMIX-配置-4
编号：安全要求-设备-INFORMIX-配置-5
编号：安全要求-设备-INFORMIX-配置-29-可选
编号：安全要求-设备-INFORMIX-配置-6-可选
编号：安全要求-设备-INFORMIX-配置-7-可选
3.授权
编号：安全要求-设备-INFORMIX-配置-9
4.日志
编号：安全要求-设备-INFORMIX-配置-12
编号：安全要求-设备-INFORMIX-配置-28
5.其他
编号：安全要求-设备-INFORMIX-配置-36-可选
编号：安全要求-设备-INFORMIX-配置-37-可选。