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IDS Forum

cannot initialize rootdbs

Posted By: NOOR ANSARI AB RAZAK
Date: Monday, 28 June 2004, at 9:49 p.m.

*****************************
informix 7.3 UD1
running on Solaris 8 with 70 Mhz CPU and
168 MB RAM
******************************

Problem : Fatal error in shared memory creation
error 156
command :
$ oninit -i

This action will initialize Informix Dynamic Server;
any existing Informix Dynamic Server databases will NOT be accessible -
Do you wish to continue (y/n)? y
oninit: Fatal error in shared memory creation

$ onstat -
onstat: Cannot attach to shared memory. errno = 156


message in online.log : 15:47:33 mt_shm_init: can't create virtual segment

15:52:13 shmat: [EMFILE][24]: out of shared memory segments, check system SHMSEG

15:52:13 mt_shm_init: can't create virtual segment

15:56:33 shmat: [EMFILE][24]: out of shared memory segments, check system SHMSEG

15:56:33 mt_shm_init: can't create virtual segment

08:48:35 shmat: [EMFILE][24]: out of shared memory segments, check system SHMSEG

08:48:35 mt_shm_init: can't create virtual segment

08:53:26 shmget: [EEXIST][17]: key 52574801: shared memory already exists
08:53:26 mt_shm_init: can't create resident segment

09:18:51 shmget: [EEXIST][17]: key 52574801: shared memory already exists
09:18:51 mt_shm_init: can't create resident segment

09:40:53 shmget: [EEXIST][17]: key 52574801: shared memory already exists
09:40:53 mt_shm_init: can't create resident segment


onconfig file : # Root Dbspace Configuration

ROOTNAME rootdbs # Root dbspace name
ROOTPATH /netra/chunk/root-cook-01
# Path for device containing root dbspace
ROOTOFFSET 0 # Offset of root dbspace into device (Kbytes)
ROOTSIZE 20000 # Size of root dbspace (Kbytes)

# Disk Mirroring Configuration Parameters

MIRROR 1 # Mirroring flag (Yes = 1, No = 0)
MIRRORPATH /netra/chunk/mroot-cook-01
# Path for device containing mirrored root
MIRROROFFSET 0 # Offset into mirrored device (Kbytes)

# Physical Log Configuration

PHYSDBS rootdbs # Location (dbspace) of physical log
PHYSFILE 1000 # Physical log file size (Kbytes)

# Logical Log Configuration

LOGFILES 6 # Number of logical log files
LOGSIZE 500 # Logical log size (Kbytes)

# Diagnostics

MSGPATH /informix/online.log # System message log file path
CONSOLE /dev/console # System console message path
ALARMPROGRAM /informix/etc/log_full.sh # Alarm program path
SYSALARMPROGRAM /informix/etc/evidence.sh # System Alarm program path
TBLSPACE_STATS 1

# System Archive Tape Device

TAPEDEV superserver:/dev/rmt/0 # Tape device path
TAPEBLK 16 # Tape block size (Kbytes)
TAPESIZE 10240 # Maximum amount of data to put on tape (Kbytes)

# Log Archive Tape Device

LTAPEDEV superserver:/dev/rmt/0 # Log tape device path
LTAPEBLK 16 # Log tape block size (Kbytes)
LTAPESIZE 10240 # Max amount of data to put on log tape (Kbytes)

# Optical

STAGEBLOB # Informix Dynamic Server/Optical staging area

# System Configuration

SERVERNUM 1 # Unique id corresponding to a Dynamic Server instance
DBSERVERNAME imiti # Name of default database server
DBSERVERALIASES # List of alternate dbservernames
NETTYPE tlitcp,1,100,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 0 # 0 for single-processor, 1 for multi-processor
NUMCPUVPS 1 # Number of user (cpu) vps
SINGLE_CPU_VP 0 # If non-zero, limit number of cpu vps to one

NOAGE 0 # Process aging
AFF_SPROC 0 # Affinity start processor
AFF_NPROCS 0 # Affinity number of processors

# Shared Memory Parameters

AFF_SPROC 0 # Affinity start processor
AFF_NPROCS 0 # Affinity number of processors

# Shared Memory Parameters

LOCKS 20000 # Maximum number of locks
BUFFERS 2000 # Maximum number of shared buffers
NUMAIOVPS 2 # Number of IO vps
PHYSBUFF 128 # Physical log buffer size (Kbytes)
LOGBUFF 64 # Logical log buffer size (Kbytes)
LOGSMAX 20 # Maximum number of logical log files
CLEANERS 2 # Number of buffer cleaner processes
SHMBASE 0xa000000 # Shared memory base address
SHMVIRTSIZE 10000 # initial virtual shared memory segment size
SHMADD 8192 # Size of new shared memory segments (Kbytes)
SHMTOTAL 0 # Total shared memory (Kbytes). 0=>unlimited
CKPTINTVL 300 # Check point interval (in sec)
LRUS 16 # Number of LRU queues
LRU_MAX_DIRTY 40 # LRU percent dirty begin cleaning limit
LRU_MIN_DIRTY 30 # LRU percent dirty end cleaning limit
LTXHWM 40 # Long transaction high water mark percentage
LTXEHWM 50 # Long transaction high water mark (exclusive)
TXTIMEOUT 0x12c # Transaction timeout (in sec)
STACKSIZE 32 # Stack size (Kbytes)
# System Page Size
# BUFFSIZE - Dynamic Server no longer supports this configuration parameter.
# To determine the page size used by Dynamic Server 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 /informix/etc/dr.lostfound # DR lost+found file path

# CDR Variables
CDR_LOGBUFFERS 2048 # size of log reading buffer pool (Kbytes)
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_LOGDELTA 30 # % of log space allowed in queue memory
CDR_NUMCONNECT 16 # Expected connections per server
CDR_NIFRETRY 300 # Connection retry (seconds)
CDR_NIFCOMPRESS 0 # Link level compression (-1 never, 0 none, 9 max)

# Backup/Restore variables
BAR_ACT_LOG /tmp/bar_act.log
BAR_MAX_BACKUP 0
BAR_RETRY 1
BAR_NB_XPORT_COUNT 10
BAR_XFER_BUF_SIZE 31

# Informix Storage Manager variables
ISM_DATA_POOL ISMData # If the data pool name is changed, be sure to
# update $INFORMIXDIR/bin/onbar. Change to
# ism_catalog -create_bootstrap -pool <new name>
ISM_LOG_POOL ISMLogs

# Read Ahead Variables
RA_PAGES # Number of pages to attempt to read ahead
RA_THRESHOLD # Number of pages left before next group

# DBSPACETEMP:
# Dynamic Server equivalent of DBTEMP for SE. This is the list of dbspaces
# that the Dynamic Server SQL Engine will use to create temp tables etc.
# If specified it must be a colon separated list of dbspaces that exist
# when the Dynamic Server 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 # 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 Dynamic Server operations.
# For DUMPSHMEM, DUMPGCORE and DUMPCORE 1 means Yes, 0 means No.

DUMPDIR /tmp # Preserve diagnostics in this directory
DUMPSHMEM 1 # Dump a copy of shared memory
DUMPGCORE 0 # Dump a core image using 'gcore'
DUMPCORE 0 # Dump a core image (Warning:this aborts Dynamic Server)
DUMPCNT 1 # Number of shared memory or gcore dumps for
# a single user's session

FILLFACTOR 90 # Fill factor for building indexes

# method for Dynamic Server 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 100 # Maximum allowed pdqpriority
DS_MAX_QUERIES # Maximum number of decision support queries
DS_TOTAL_MEMORY # Decision support memory (Kbytes)
DS_MAX_SCANS 1048576 # Maximum number of decision support scans
DATASKIP off # 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

ONDBSPACEDOWN 2 # Dbspace down option: 0 = CONTINUE, 1 = ABORT, 2 = WAIT
LBU_PRESERVE 0 # Preserve last log for log backup
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

# Optimization goal: -1 = ALL_ROWS(Default), 0 = FIRST_ROWS
OPT_GOAL -1

# Optimizer DIRECTIVES ON (1/Default) or OFF (0)
DIRECTIVES 1

# Status of restartable restore
RESTARTABLE_RESTORE off


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