WampServer

mysql is not starting on my machine
while viewing the mysql log I found following logs

=============================
InnoDB: The log sequence number in ibdata files does not match
InnoDB: the log sequence number in the ib_logfiles!
080502 23:27:39 InnoDB: Database was not shut down normally!
InnoDB: Starting crash recovery.
InnoDB: Reading tablespace information from the .ibd files...
InnoDB: Restoring possible half-written data pages from the doublewrite
InnoDB: buffer...
080502 23:27:39 InnoDB: Started; log sequence number 0 43655
080502 23:27:39 [ERROR] wampmysqld: Can't create/write to file 'c:\wamp\bin\mysql\mysql5.0.51a\data\com3.pid' (Errcode: 2)
=============================

I checked the port number and it's not used by other programs and also it's not blocked by my firewall [firewall is disabled]

I am using win xp prof.

can anyone help me how to resolve this issue.

thanks

dp u have any data stored yet or are u only setting up?

Steven Martin
stevenmartin99@gmail.com
stevenmartin99@hotmail.com
PampServer.com - [pampserver.com]

it's my first instillation after when I formatted my computer.
so there is not any data stored

good ok. post me a copy of your my.ini file in c:/wamp/bin/mysql/mysql.5.1.04


and list the files in ur mysql/data folder

Steven Martin
stevenmartin99@gmail.com
stevenmartin99@hotmail.com
PampServer.com - [pampserver.com]

well I am using latest version - WampServer2.0b
and here in the forum I couldn't figure out the way to attach files so I am copy pasting data from my.ini

=========================
# MySQL Server Instance Configuration File
# ----------------------------------------------------------------------
# Generated by the MySQL Server Instance Configuration Wizard
#
#
# Installation Instructions
# ----------------------------------------------------------------------
#
# On Linux you can copy this file to /etc/my.cnf to set global options,
# mysql-data-dir/my.cnf to set server-specific options
# (@localstatedir@ for this installation) or to
# ~/.my.cnf to set user-specific options.
#
# On Windows you should keep this file in the installation directory
# of your server (e.g. C:\Program Files\MySQL\MySQL Server 4.1). To
# make sure the server reads the config file use the startup option
# "--defaults-file".
#
# To run run the server from the command line, execute this in a
# command line shell, e.g.
# mysqld --defaults-file="C:\Program Files\MySQL\MySQL Server 4.1\my.ini"
#
# To install the server as a Windows service manually, execute this in a
# command line shell, e.g.
# mysqld --install MySQL41 --defaults-file="C:\Program Files\MySQL\MySQL Server 4.1\my.ini"
#
# And then execute this in a command line shell to start the server, e.g.
# net start MySQL41
#
#
# Guildlines for editing this file
# ----------------------------------------------------------------------
#
# In this file, you can use all long options that the program supports.
# If you want to know the options a program supports, start the program
# with the "--help" option.
#
# More detailed information about the individual options can also be
# found in the manual.
#
#
# CLIENT SECTION
# ----------------------------------------------------------------------
#
# The following options will be read by MySQL client applications.
# Note that only client applications shipped by MySQL are guaranteed
# to read this section. If you want your own MySQL client program to
# honor these values, you need to specify it as an option during the
# MySQL client library initialization.
#
[client]

port=3306


# SERVER SECTION
# ----------------------------------------------------------------------
#
# The following options will be read by the MySQL Server. Make sure that
# you have installed the server correctly (see above) so it reads this
# file.
#
[wampmysqld]

# The TCP/IP Port the MySQL Server will listen on
port=3306


#Path to installation directory. All paths are usually resolved relative to this.
basedir=c:/wamp/bin/mysql/mysql5.0.51a

#log file
log-error=c:/wamp/logs/mysql.log

#Path to the database root
datadir=c:/wamp/bin/mysql/mysql5.0.51a/data

# The default character set that will be used when a new schema or table is
# created and no character set is defined
default-character-set=latin1

# The default storage engine that will be used when create new tables when
default-storage-engine=INNODB

# The maximum amount of concurrent sessions the MySQL server will
# allow. One of these connections will be reserved for a user with
# SUPER privileges to allow the administrator to login even if the
# connection limit has been reached.
max_connections=255

# Query cache is used to cache SELECT results and later return them
# without actual executing the same query once again. Having the query
# cache enabled may result in significant speed improvements, if your
# have a lot of identical queries and rarely changing tables. See the
# "Qcache_lowmem_prunes" status variable to check if the current value
# is high enough for your load.
# Note: In case your tables change very often or if your queries are
# textually different every time, the query cache may result in a
# slowdown instead of a performance improvement.
query_cache_size=8M

# The number of open tables for all threads. Increasing this value
# increases the number of file descriptors that mysqld requires.
# Therefore you have to make sure to set the amount of open files
# allowed to at least 4096 in the variable "open-files-limit" in
# section [mysqld_safe]
table_cache=510

# Maximum size for internal (in-memory) temporary tables. If a table
# grows larger than this value, it is automatically converted to disk
# based table This limitation is for a single table. There can be many
# of them.
tmp_table_size=13M


# How many threads we should keep in a cache for reuse. When a client
# disconnects, the client's threads are put in the cache if there aren't
# more than thread_cache_size threads from before. This greatly reduces
# the amount of thread creations needed if you have a lot of new
# connections. (Normally this doesn't give a notable performance
# improvement if you have a good thread implementation.)
thread_cache_size=12

#*** MyISAM Specific options

# The maximum size of the temporary file MySQL is allowed to use while
# recreating the index (during REPAIR, ALTER TABLE or LOAD DATA INFILE.
# If the file-size would be bigger than this, the index will be created
# through the key cache (which is slower).
myisam_max_sort_file_size=100G

# If the temporary file used for fast index creation would be bigger
# than using the key cache by the amount specified here, then prefer the
# key cache method. This is mainly used to force long character keys in
# large tables to use the slower key cache method to create the index.
myisam_max_extra_sort_file_size=100G

# If the temporary file used for fast index creation would be bigger
# than using the key cache by the amount specified here, then prefer the
# key cache method. This is mainly used to force long character keys in
# large tables to use the slower key cache method to create the index.
myisam_sort_buffer_size=8M

# Size of the Key Buffer, used to cache index blocks for MyISAM tables.
# Do not set it larger than 30% of your available memory, as some memory
# is also required by the OS to cache rows. Even if you're not using
# MyISAM tables, you should still set it to 8-64M as it will also be
# used for internal temporary disk tables.
key_buffer_size=9M

# Size of the buffer used for doing full table scans of MyISAM tables.
# Allocated per thread, if a full scan is needed.
read_buffer_size=64K
read_rnd_buffer_size=256K

# This buffer is allocated when MySQL needs to rebuild the index in
# REPAIR, OPTIMZE, ALTER table statements as well as in LOAD DATA INFILE
# into an empty table. It is allocated per thread so be careful with
# large settings.
sort_buffer_size=203K


#*** INNODB Specific options ***


# Use this option if you have a MySQL server with InnoDB support enabled
# but you do not plan to use it. This will save memory and disk space
# and speed up some things.
#skip-innodb

# Additional memory pool that is used by InnoDB to store metadata
# information. If InnoDB requires more memory for this purpose it will
# start to allocate it from the OS. As this is fast enough on most
# recent operating systems, you normally do not need to change this
# value. SHOW INNODB STATUS will display the current amount used.
innodb_additional_mem_pool_size=2M

# If set to 1, InnoDB will flush (fsync) the transaction logs to the
# disk at each commit, which offers full ACID behavior. If you are
# willing to compromise this safety, and you are running small
# transactions, you may set this to 0 or 2 to reduce disk I/O to the
# logs. Value 0 means that the log is only written to the log file and
# the log file flushed to disk approximately once per second. Value 2
# means the log is written to the log file at each commit, but the log
# file is only flushed to disk approximately once per second.
innodb_flush_log_at_trx_commit=1

# The size of the buffer InnoDB uses for buffering log data. As soon as
# it is full, InnoDB will have to flush it to disk. As it is flushed
# once per second anyway, it does not make sense to have it very large
# (even with long transactions).
innodb_log_buffer_size=1M

# InnoDB, unlike MyISAM, uses a buffer pool to cache both indexes and
# row data. The bigger you set this the less disk I/O is needed to
# access data in tables. On a dedicated database server you may set this
# parameter up to 80% of the machine physical memory size. Do not set it
# too large, though, because competition of the physical memory may
# cause paging in the operating system. Note that on 32bit systems you
# might be limited to 2-3.5G of user level memory per process, so do not
# set it too high.
innodb_buffer_pool_size=15M

# Size of each log file in a log group. You should set the combined size
# of log files to about 25%-100% of your buffer pool size to avoid
# unneeded buffer pool flush activity on log file overwrite. However,
# note that a larger logfile size will increase the time needed for the
# recovery process.
innodb_log_file_size=10M

# Number of threads allowed inside the InnoDB kernel. The optimal value
# depends highly on the application, hardware as well as the OS
# scheduler properties. A too high value may lead to thread thrashing.
innodb_thread_concurrency=8



[mysqld]
port=3306
=========================



files on mysql data folder
===================
======================
Dir
======
mysql

Files
======
ib_logfile0
ib_logfile1
ibdata1

ok delete those 3 files as the file is right


ib_logfile0
ib_logfile1
ibdata1

then restart


if it doesnt work then ul need to switch engines,,, its easy to do.

Steven Martin
stevenmartin99@gmail.com
stevenmartin99@hotmail.com
PampServer.com - [pampserver.com]

i removed these files (ib_logfile0, ib_logfile1, ibdata1 ) and restarted wamp server but the problem have not been solved.

so what's to do now and can you let me know

and I don't understand the line - "if it doesnt work then ul need to switch engines,,, its easy to do."

just in ur my.ini file


find this


default-storage-engine=INNODB

and chnage to

default-storage-engine=MyISAM




this will definitly work, but its just using a different engine storage type, if u dunno what this means then you wont need to worry about any difference between them

Steven Martin
stevenmartin99@gmail.com
stevenmartin99@hotmail.com
PampServer.com - [pampserver.com]

sorry to bother you, I did what you have done exactly but it doesn't worked
then next I tried to restarting wamp by deleting (ib_logfile0, ib_logfile1, ibdata1 )

below is the log on mysql

===========================
InnoDB: The first specified data file .\ibdata1 did not exist:
InnoDB: a new database to be created!
080503 0:00:16 InnoDB: Setting file .\ibdata1 size to 10 MB
InnoDB: Database physically writes the file full: wait...
080503 0:00:16 InnoDB: Log file .\ib_logfile0 did not exist: new to be created
InnoDB: Setting log file .\ib_logfile0 size to 10 MB
InnoDB: Database physically writes the file full: wait...
080503 0:00:16 InnoDB: Log file .\ib_logfile1 did not exist: new to be created
InnoDB: Setting log file .\ib_logfile1 size to 10 MB
InnoDB: Database physically writes the file full: wait...
InnoDB: Doublewrite buffer not found: creating new
InnoDB: Doublewrite buffer created
InnoDB: Creating foreign key constraint system tables
InnoDB: Foreign key constraint system tables created
080503 0:00:17 InnoDB: Started; log sequence number 0 0
080503 0:00:17 [ERROR] wampmysqld: Can't create/write to file 'c:\wamp\bin\mysql\mysql5.0.51a\data\com3.pid' (Errcode: 2)
===========================

this is still using INNODB... check how many mysql services are running? wampmysqld or wampmysqld-nt is the service name,.,


restart wamp completly after u end them all and wampapache too

Steven Martin
stevenmartin99@gmail.com
stevenmartin99@hotmail.com
PampServer.com - [pampserver.com]

hi I have restarted my PC and started the wampserver and it's not working yet again

NOTE:
I have already changed default-storage-engine=INNODB to default-storage-engine=MyISAM from my.ini


This is the mysql log
===============================
InnoDB: Log scan progressed past the checkpoint lsn 0 36808
080503 0:18:58 InnoDB: Database was not shut down normally!
InnoDB: Starting crash recovery.
InnoDB: Reading tablespace information from the .ibd files...
InnoDB: Restoring possible half-written data pages from the doublewrite
InnoDB: buffer...
InnoDB: Doing recovery: scanned up to log sequence number 0 43655
080503 0:18:58 InnoDB: Starting an apply batch of log records to the database...
InnoDB: Progress in percents: 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99
InnoDB: Apply batch completed
080503 0:18:59 InnoDB: Started; log sequence number 0 43655
080503 0:18:59 [ERROR] wampmysqld: Can't create/write to file 'c:\wamp\bin\mysql\mysql5.0.51a\data\com3.pid' (Errcode: 2)

===============================

ok move down further in the my,ini file and delete the # from

# skip innodb

Steven Martin
stevenmartin99@gmail.com
stevenmartin99@hotmail.com
PampServer.com - [pampserver.com]

can you make sure also that this path exists

c:\wamp\bin\mysql\mysql5.0.51a\data\


u havent changed drives of folder names?

Steven Martin
stevenmartin99@gmail.com
stevenmartin99@hotmail.com
PampServer.com - [pampserver.com]

mmm just tried this too
so far following have been changed on my.ini

default-storage-engine=INNODB to default-storage-engine=MyISAM
# skip-innodb to skip-innodb

I cleared the log and started wamp server and it is not working again

below is the log

=================
080503 0:34:01 [ERROR] wampmysqld: Can't create/write to file 'c:\wamp\bin\mysql\mysql5.0.51a\data\com3.pid' (Errcode: 2)
=================

yes "c:\wamp\bin\mysql\mysql5.0.51a\data\" path exist

it cant create the computername.pid file..... usually this happens when u have mysql installed any running already... or if the place where its writing does not exist.

what colour is ur wamp icon?

Steven Martin
stevenmartin99@gmail.com
stevenmartin99@hotmail.com
PampServer.com - [pampserver.com]



Edited 1 time(s). Last edit at 05/02/2008 08:56PM by stevenmartin99.

it's yellow+white

are u sure u dont have another mysql service running?

pid is the process id number . its used to make sure two processes of the same name dont get mixed info.

it saves it in a file. is the folder read only maybe?

Steven Martin
stevenmartin99@gmail.com
stevenmartin99@hotmail.com
PampServer.com - [pampserver.com]

iv found the problem.. its ur computer name


com3 is resevered and cannot be used for a service name


ul need to rename ur user account on windows

Steven Martin
stevenmartin99@gmail.com
stevenmartin99@hotmail.com
PampServer.com - [pampserver.com]



Edited 1 time(s). Last edit at 05/02/2008 09:29PM by stevenmartin99.

hi

the folder is not having readonly attribute
and I didn't even found any mysql servie running on process.

I am much confused on what to do. I have installed wamp on other 2 computers successfully but it's having error on mysql on this computer only