 |
IDS Forum
Re: Question about sysindexes.clust
Posted By: Eric Rowell
Date: Tuesday, 18 November 2008, at 3:28 p.m.
In Response To: Re: Question about sysindexes.clust (Obnoxio The Clown)
Any suggestions would be greatfully tested out... Since this system is very
mixed and we don't have a testing tool it has been very hard to convince
anyone to change anything.
No the only difference with production is the names of the instance and
"UNSECURE_ONSTAT" is not set.
onstat -c
IBM Informix Dynamic Server Version 10.00.FC8 -- On-Line -- Up 09:01:20
-- 4358208 Kbytes
Configuration File: /usr/informix/etc/onconfig.DMS
#**************************************************************************
#
# Licensed Material - Property Of IBM
#
# "Restricted Materials of IBM"
#
# IBM Informix Dynamic Server
# (c) Copyright IBM Corporation 1996, 2005 All rights reserved.
#
# Title: onconfig.std
# Description: IBM Informix Dynamic Server Configuration Parameters
#
#**************************************************************************
# Root Dbspace Configuration
ROOTNAME root_dms_dt_1 # Root dbspace name
ROOTPATH /ifx_devices/dms_vol01 # Path for device containing root
dbspace
ROOTOFFSET 0 # Offset of root dbspace into device
(Kbytes)
ROOTSIZE 524288 # Size of root dbspace (Kbytes)
# Disk Mirroring Configuration Parameters
MIRROR 0 # Mirroring flag (Yes = 1, No = 0)
MIRRORPATH # Path for device containing mirrored root
MIRROROFFSET 0 # Offset into mirrored device (Kbytes)
# Physical Log Configuration
PHYSDBS root_dms_dt_1 # Location (dbspace) of physical log
PHYSFILE 250000 # Physical log file size (Kbytes)
# Logical Log Configuration
LOGFILES 8 # Number of logical log files
LOGSIZE 15000 # Logical log size (Kbytes)
LOG_BACKUP_MODE MANUAL # Logical log backup mode (MANUAL, CONT)
# Tablespace Tablespace Configuration in Root Dbspace
TBLTBLFIRST 0 # First extent size (Kbytes) (0 = default)
TBLTBLNEXT 0 # Next extent size (Kbytes) (0 = default)
# Security
# DBCREATE_PERMISSION:
# By default any user can create a database. Uncomment DBCREATE_PERMISSON to
# limit database creation to a specific user. Add a new DBCREATE_PERMISSION
# line for each permitted user.
DBCREATE_PERMISSION informix
# DB_LIBRARY_PATH:
# When loading a (C or C++) shared object (for a UDR or UDT), IDS checks
that
# the user-specified path starts with one of the directory prefixes listed
in
# the comma-separated list of prefixes in DB_LIBRARY_PATH. The string
# "$INFORMIXDIR/extend" must be included in DB_LIBRARY_PATH in order for
# extensibility and IBM supplied blades to work correctly.
# DB_LIBRARY_PATH $INFORMIXDIR/extend
# IFX_EXTEND_ROLE:
# 0 (or off) => Disable use of EXTEND role to control who can register
# external routines.
# 1 (or on) => Enable use of EXTEND role to control who can register
# external routines. This is the default behaviour.
#
IFX_EXTEND_ROLE 1 # To control the usage of EXTEND role.
# Diagnostics
MSGPATH /usr/informix/log/online.DMS.log # System message log file
path
CONSOLE /dev/console # System console message path
# To automatically backup logical logs, edit alarmprogram.sh and set
# BACKUPLOGS=Y
ALARMPROGRAM /usr/informix/etc/log_full.sh # Alarm program path
ALRM_ALL_EVENTS 0 # Triggers ALARMPROGRAM for any event occur
TBLSPACE_STATS 1 # Maintain tblspace statistics
# System Archive Tape Device
#TAPEDEV /dev/null # Tape device path
TAPEDEV /dev/rmt0 # Tape device path
TAPEBLK 32 # Tape block size (Kbytes)
TAPESIZE 0 # Maximum amount of data to put on tape
(Kbytes)
# Log Archive Tape Device
#LTAPEDEV /dev/null # Log tape device path
LTAPEDEV /ifx_devices/logical_log_dms # Log tape device path
LTAPEBLK 32 # Log tape block size (Kbytes)
LTAPESIZE 0 # Max amount of data to put on log tape
(Kbs)
# Optical
STAGEBLOB # Informix Dynamic Server staging area
# System Configuration
SERVERNUM 1 # Unique id corresponding to a OnLine
instance
DBSERVERNAME dms_shm # Name of default database server
DBSERVERALIASES dms,dms_dev2 # List of alternate dbservernames
NETTYPE ipcshm,10,40,CPU # Configure poll thread(s) for nettype
NETTYPE soctcp,6,200,NET # Configure poll thread(s) for nettype
DEADLOCK_TIMEOUT 60 # Max time to wait of lock in distributed
env.
RESIDENT 0 # Forced residency flag (Yes = 1, No = 0)
MULTIPROCESSOR 1 # 0 for single-processor, 1 for
multi-processor
NUMCPUVPS 10 # Number of user (cpu) vps
SINGLE_CPU_VP 0 # If non-zero, limit number of cpu vps to
one
NOAGE 1 # Process aging
AFF_SPROC 0 # Affinity start processor
AFF_NPROCS 0 # Affinity number of processors
# Shared Memory Parameters
LOCKS 800000 # Maximum number of locks
NUMAIOVPS 3 # Number of IO vps
PHYSBUFF 32 # Physical log buffer size (Kbytes)
LOGBUFF 32 # Logical log buffer size (Kbytes)
CLEANERS 128 # Number of buffer cleaner processes
SHMBASE 0x700000010000000L # Shared memory base address
SHMVIRTSIZE 1048576 # initial virtual shared memory segment size
SHMADD 51200 # Size of new shared memory segments
(Kbytes)
EXTSHMADD 51200 # Size of new extension shared memory
segments (Kbytes)
SHMTOTAL 5242880 # Total shared memory (Kbytes). 0=>unlimited
CKPTINTVL 300 # Check point interval (in sec)
TXTIMEOUT 300 # Transaction timeout (in sec)
STACKSIZE 128
# Dynamic Logging
# DYNAMIC_LOGS:
# 2 : server automatically add a new logical log when necessary. (ON)
# 1 : notify DBA to add new logical logs when necessary. (ON)
# 0 : cannot add logical log on the fly. (OFF)
#
# When dynamic logging is on, we can have higher values for LTXHWM/LTXEHWM,
# because the server can add new logical logs during long transaction
rollback.
# However, to limit the number of new logical logs being added,
LTXHWM/LTXEHWM
# can be set to smaller values.
#
# If dynamic logging is off, LTXHWM/LTXEHWM need to be set to smaller values
# to avoid long transaction rollback hanging the server due to lack of
logical
# log space, i.e. 50/60 or lower.
#
# In case of system configured with CDR, the difference between LTXHWM and
# LTXEHWM should be atleast 30% so that we could minimize log overrun issue.
DYNAMIC_LOGS 1
LTXHWM 70
LTXEHWM 80
# System Page Size
# BUFFSIZE - OnLine no longer supports this configuration parameter.
# To determine the page size used by OnLine on your platform
# see the last line of output from the command, 'onstat -b'.
# Recovery Variables
# OFF_RECVRY_THREADS:
# Number of parallel worker threads during fast recovery or an offline
restore.
# ON_RECVRY_THREADS:
# Number of parallel worker threads during an online restore.
OFF_RECVRY_THREADS 10 # Default number of offline worker threads
ON_RECVRY_THREADS 1 # Default number of online worker threads
# Data Replication Variables
# DRAUTO: 0 manual, 1 retain type, 2 reverse type
DRAUTO 0 # DR automatic switchover
DRINTERVAL 30 # DR max time between DR buffer flushes (in
sec)
DRTIMEOUT 30 # DR network timeout (in sec)
DRLOSTFOUND /usr/informix/etc/dr.lostfound # DR lost+found file path
DRIDXAUTO 0 # DR automatic index repair. 0=off, 1=on
# CDR Variables
CDR_EVALTHREADS 1,2 # evaluator threads (per-cpu-vp,additional)
CDR_DSLOCKWAIT 5 # DS lockwait timeout (seconds)
CDR_QUEUEMEM 4096 # Maximum amount of memory for any CDR queue
(Kbytes)
CDR_NIFCOMPRESS 0 # Link level compression (-1 never, 0 none, 9 max)
CDR_SERIAL 0 # Serial Column Sequence
CDR_DBSPACE # dbspace for syscdr database
CDR_QHDR_DBSPACE # CDR queue dbspace (default same as catalog)
CDR_QDATA_SBSPACE # List of CDR queue smart blob spaces
# CDR_MAX_DYNAMIC_LOGS
# -1 => unlimited
# 0 => disable dynamic log addition
# >0 => limit the no. of dynamic log additions with the specified value.
# Max dynamic log requests that CDR can make within one server session.
CDR_MAX_DYNAMIC_LOGS 0 # Dynamic log addition disabled by default
# Backup/Restore variables
BAR_ACT_LOG /usr/informix/log/bar_act_DMS.log # ON-Bar Log file - not in
/tmp please
BAR_DEBUG_LOG /usr/informix/log/bar_dbug_DMS.log # ON-Bar Debug Log - not in
/tmp please
BAR_MAX_BACKUP 10
BAR_RETRY 3
BAR_NB_XPORT_COUNT 20
BAR_XFER_BUF_SIZE 31
RESTARTABLE_RESTORE ON
BAR_PROGRESS_FREQ 0
# Informix Storage Manager variables
ISM_DATA_POOL ISMData
ISM_LOG_POOL ISMLogs
# Read Ahead Variables
RA_PAGES 16 # Number of pages to attempt to read ahead
RA_THRESHOLD 8 # Number of pages left before next group
# Statement Caching
STMT_CACHE 1 # Activates the Statement Cache
STMT_CACHE_HITS 10 # Number of times used before fully cached
STMT_CACHE_SIZE 64000 # Size of the Statement cache
STMT_CACHE_NOLIMIT 1 # Limit Statement Cache to STMT_CACHE_SIZE
STMT_CACHE_NUMPOOL 100 # Number of Cache Pools to be used
# DBSPACETEMP:
# OnLine equivalent of DBTEMP for SE. This is the list of dbspaces
# that the OnLine SQL Engine will use to create temp tables etc.
# If specified it must be a colon separated list of dbspaces that exist
# when the OnLine system is brought online. If not specified, or if
# all dbspaces specified are invalid, various ad hoc queries will create
# temporary files in /tmp instead.
DBSPACETEMP
tempdbs01:tempdbs08:tempdbs02:tempdbs07:tempdbs03:tempdbs06:tempdbs04:tempdbs05
# Default temp dbspaces
# DUMP*:
# The following parameters control the type of diagnostics information which
# is preserved when an unanticipated error condition (assertion failure)
occurs
# during OnLine operations.
# For DUMPSHMEM, DUMPGCORE and DUMPCORE 1 means Yes, 0 means No.
DUMPDIR /var/log/ifx # Preserve diagnostics in this directory
DUMPSHMEM 0 # Dump a copy of shared memory
DUMPGCORE 0 # Dump a core image using 'gcore'
DUMPCORE 0 # Dump a core image (Warning:this aborts
OnLine)
DUMPCNT 1 # Number of shared memory or gcore dumps for
# a single user's session
FILLFACTOR 90 # Fill factor for building indexes
# method for OnLine to use when determining current time
USEOSTIME 0 # 0: use internal time(fast), 1: get time from
OS(slow)
# Parallel Database Queries (pdq)
MAX_PDQPRIORITY 50 # Maximum allowed pdqpriority
DS_MAX_QUERIES 20 # Maximum number of decision support queries
DS_TOTAL_MEMORY 100000 # Decision support memory (Kbytes)
DS_MAX_SCANS 100 # Maximum number of decision support scans
DS_NONPDQ_QUERY_MEM 3125 # Non PDQ query memory (Kbytes)
DATASKIP # List of dbspaces to skip
# OPTCOMPIND
# 0 => Nested loop joins will be preferred (where
# possible) over sortmerge joins and hash joins.
# 1 => If the transaction isolation mode is not
# "repeatable read", optimizer behaves as in (2)
# below. Otherwise it behaves as in (0) above.
# 2 => Use costs regardless of the transaction isolation
# mode. Nested loop joins are not necessarily
# preferred. Optimizer bases its decision purely
# on costs.
OPTCOMPIND 2 # To hint the optimizer
DIRECTIVES 1 # Optimizer DIRECTIVES ON (1/Default) or OFF (0)
ONDBSPACEDOWN 1 # Dbspace down option: 0 = CONTINUE, 1 = ABORT, 2 =
WAIT
OPCACHEMAX 0 # Maximum optical cache size (Kbytes)
# HETERO_COMMIT (Gateway participation in distributed transactions)
# 1 => Heterogeneous Commit is enabled
# 0 (or any other value) => Heterogeneous Commit is disabled
HETERO_COMMIT 0
SBSPACENAME # Default smartblob space name - this is where blobs
# go if no sbspace is specified when the smartblob is
# created. It is also used by some datablades as
# the location to put their smartblobs.
SYSSBSPACENAME # Default smartblob space for use by the Informix
# Server. This is used primarily for Informix Server
# system statistics collection.
BLOCKTIMEOUT 3600 # Default timeout for system block
SYSALARMPROGRAM /usr/informix/etc/evidence.sh # System Alarm program
path
# Optimization goal: -1 = ALL_ROWS(Default), 0 = FIRST_ROWS
OPT_GOAL -1
ALLOW_NEWLINE 0 # embedded newlines(Yes = 1, No = 0 or anything but
1)
#Create Index Online Shared Memory usage limitation
ONLIDX_MAXMEM 5120 # Per pool per index (Kbytes)
#Timeout for client connection request
LISTEN_TIMEOUT 10 # Timeout (in Seconds)
#Following are the deprecated configuration parameters, instead of these
#use BUFFERPOOL configuration parameter
#BUFFERS, LRUS, LRU_MIN_DIRTY, LRU_MAX_DIRTY
IFX_FOLDVIEW 1 # fold multiple tables or union all view with ansi
joins
#
# The following are default settings for enabling Java in the database.
# Replace all occurrences of /usr/informix with the value of $INFORMIXDIR.
#VPCLASS jvp,num=1 # Number of JVPs to start with
JVPJAVAHOME /usr/informix/extend/krakatoa/jre # JRE installation
root directory
JVPHOME /usr/informix/extend/krakatoa # Krakatoa installation
directory
JVPPROPFILE /usr/informix/extend/krakatoa/.jvpprops # JVP property file
JVPLOGFILE /usr/informix/jvp.log # JVP log file.
JDKVERSION 1.3 # JDK version supported by this server
# The path to the JRE libraries relative to JVPJAVAHOME
JVPJAVALIB /bin
# The JRE libraries to use for the Java VM
JVPJAVAVM hpi:jvm:java:net:zip:jpeg
# use JVPARGS to change Java VM configuration
#To display jni call
#JVPARGS -verbose:jni
# Classpath to use upon Java VM start-up (use _g version for debugging)
#JVPCLASSPATH
/usr/informix/extend/krakatoa/krakatoa_g.jar:/usr/informix/extend/krakatoa/jdbc_g.jar
JVPCLASSPATH
/usr/informix/extend/krakatoa/krakatoa.jar:/usr/informix/extend/krakatoa/jdbc.jar
# The following parameters are related to the buffer pool
BUFFERPOOL
default,buffers=768000,lrus=256,lru_min_dirty=1,lru_max_dirty=2
UNSECURE_ONSTAT 1
NOFUZZYCKPT 1
On Tue, Nov 18, 2008 at 3:04 PM, Obnoxio The Clown
<obnoxio@serendipita.com>wrote:
> Obnoxio The Clown wrote:
>
> > Basically, I can't disagree with your analysis, I'm just curious as to
> > why ordering should have such a measurable impact on performance given
> > the explain plan. In general, it doesn't.
> >
> > I feel like there is something lurking in the nether hells of my brain,
> > but I can't quite drag it out. Last time I saw something like this, the
> > root cause was "XXXX in my opinion" but I can't remember what "XXXX" was.
> >
> > Give me time. Or Art will be along shortly. :o)
>
> Oh. Any chance of your onconfig?
>
> --
> Cheers,
> Obnoxio The Clown
>
> http://obotheclown.blogspot.com
>
>
>
> *******************************************************************************
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>
--
Eric B. Rowell
Messages In This Thread
- Question about sysindexes.clust
Eric Rowell -- Tuesday, 18 November 2008, at 12:17 p.m.
- Re: Question about sysindexes.clust
Obnoxio The Clown -- Tuesday, 18 November 2008, at 12:22 p.m.
- Re: Question about sysindexes.clust
Eric Rowell -- Tuesday, 18 November 2008, at 12:45 p.m.
- Re: Question about sysindexes.clust
Obnoxio The Clown -- Tuesday, 18 November 2008, at 12:48 p.m.
- Re: Question about sysindexes.clust
Eric Rowell -- Tuesday, 18 November 2008, at 12:57 p.m.
- Re: Question about sysindexes.clust
Obnoxio The Clown -- Tuesday, 18 November 2008, at 1:00 p.m.
- Re: Question about sysindexes.clust
Obnoxio The Clown -- Tuesday, 18 November 2008, at 1:03 p.m.
- Re: Question about sysindexes.clust
Eric Rowell -- Tuesday, 18 November 2008, at 2:36 p.m.
- Re: Question about sysindexes.clust
Obnoxio The Clown -- Tuesday, 18 November 2008, at 3:01 p.m.
- Re: Question about sysindexes.clust
Obnoxio The Clown -- Tuesday, 18 November 2008, at 3:04 p.m.
- Re: Question about sysindexes.clust
Eric Rowell -- Tuesday, 18 November 2008, at 3:28 p.m.
- Re: Question about sysindexes.clust
Eric Rowell -- Tuesday, 18 November 2008, at 3:24 p.m.
- Re: Question about sysindexes.clust
Richard Snoke -- Tuesday, 18 November 2008, at 3:37 p.m.
- Re: Question about sysindexes.clust
Art Kagel -- Tuesday, 18 November 2008, at 4:28 p.m.
- Re: Question about sysindexes.clust
Eric Rowell -- Tuesday, 18 November 2008, at 2:18 p.m.
IDS Forum is maintained by Administrator with WebBBS 5.12.
|
|
