Re: innodb disabled

[Juan Eduardo Moreno]

Hi,

The InnoDB engine was disable because some ib_log files or Ibdata files,
InnoDB can´t read. In some cases, could be a directory permissions or some
error in creation of ib_logfiles when database is started. If you want , try
to see in the error log file generated in order to see more details. If you
don´t understand nothing in the error log file, please send this errors to
the list.

Regards,
Juan


On Tue, May 6, 2008 at 5:27 AM, Krishna Chandra Prajapati <
prajapatikc@stripped> wrote:

> Hi all,
>
> I have change the data directory from /var/lib/mysql to /data/mysql
> directory and adding innodb_file_per_table. By doing this innodb storage
> engine get dissabled. my.cnf doesn't contains "#skip-innodb". Is it's
> adding
> will enable or not
>
> HOW CAN I ENABLE INNODB
>
> mysql> show engines;
>
>
> +------------+----------+----------------------------------------------------------------+
> | Engine     | Support  |
> Comment                                                        |
>
>
> +------------+----------+----------------------------------------------------------------+
> | MyISAM     | DEFAULT  | Default engine as of MySQL 3.23 with great
> performance         |
> | MEMORY     | YES      | Hash based, stored in memory, useful for
> temporary
> tables      |
> | InnoDB     | DISABLED | Supports transactions, row-level locking, and
> foreign keys     |
> | BerkeleyDB | NO       | Supports transactions and page-level
> locking                   |
> | BLACKHOLE  | NO       | /dev/null storage engine (anything you write to
> it
> disappears) |
> | EXAMPLE    | NO       | Example storage
> engine                                         |
> | ARCHIVE    | YES      | Archive storage
> engine                                         |
> | CSV        | YES      | CSV storage
> engine                                             |
> | ndbcluster | DISABLED | Clustered, fault-tolerant, memory-based
> tables                 |
> | FEDERATED  | YES      | Federated MySQL storage
> engine                                 |
> | MRG_MYISAM | YES      | Collection of identical MyISAM
> tables                          |
> | ISAM       | NO       | Obsolete storage
> engine                                        |
>
>
> +------------+----------+----------------------------------------------------------------+
> 12 rows in set (0.00 sec)
>
>
> # /etc/mysql/my.cnf: The global mysql configuration file.
> # $Header: /var/cvsroot/gentoo-x86/dev-db/mysql/files/my.cnf-4.1-r1,v 1.3
> 2006/02/01 20:25:56 vivo Exp $
> #
> # $Revision:$
> # $Id:$
>
> # The following options will be passed to all MySQL clients
> [client]
> #password                                       =
> port                                            = 3306
> socket                                          =
> /var/run/mysqld/mysqld.sock
>
> [mysql]
> character-sets-dir=utf8
> default-character-set=utf8
>
> [mysqladmin]
> character-sets-dir=utf8
> default-character-set=utf8
>
> [mysqlcheck]
> character-sets-dir=utf8
> default-character-set=utf8
>
> [mysqldump]
> character-sets-dir=utf8
> default-character-set=utf8
>
> [mysqlimport]
> character-sets-dir=utf8
> default-character-set=utf8
>
> [mysqlshow]
> character-sets-dir=utf8
> default-character-set=utf8
>
> [myisamchk]
> character-sets-dir=utf8
> default-character-set=utf8
>
> [myisampack]
> character-sets-dir=utf8
>
>
> # use [safe_mysqld] with mysql-3
> [mysqld_safe]
> err-log                                         = /var/log/mysql/mysql.err
>
> # add a section [mysqld-4.1] or [mysqld-5.0] for specific configurations.
> [mysqld]
> old_passwords = false # inserted by debconf
> character-set-server            = utf8
> default-character-set           = utf8
> user                            = mysql
> port                            = 3306
> socket                          = /var/run/mysqld/mysqld.sock
> pid-file                        = /var/run/mysqld/mysqld.pid
> log-error                       = /var/log/mysql/mysqld.err
> basedir                         = /usr
> #datadir                        = /var/lib/mysql
> skip-locking
> #set default_storage_engine=InnoDB
> key_buffer                      = 384M
> max_allowed_packet              = 16M
> table_cache                     = 1024
>
> sort_buffer_size                = 9M
>
> net_buffer_length               = 8K
> read_buffer_size                = 2M
> read_rnd_buffer_size            = 32M
> myisam_sort_buffer_size         = 64M
>
> query_cache_type                = 1
> query_cache_size                = 100M
>
> language                        = /usr/share/mysql/english
>
> set-variable = max_connections=1024
>
> # Begin replication section
> log-bin=/var/db/db05-master-bin.log
> server-id=5
>
> # End replication section
>
> #security:
> #using "localhost" in connects use sockets by default
> #skip-networking
> #bind-address                           = 127.0.0.1
>
> # Point the following paths to different dedicated disks
> tmpdir                          = /tmp/
> #log-update                     = /path-to-dedicated-directory/hostname
>
> # you need debug use flag enabled to use this ones.
> # if needed uncomment them, start the server and issue
> # #tail -f /tmp/mysqld.sql /tmp/mysqld.trace
> # this will show you *exactly* what's appening in your server ;)
>
> #log                            = /tmp/mysqld.sql
> #gdb
> #debug                          = d:t:i:o,/tmp/mysqld.trace
> #one-thread
>
> # Uncomment the following if you are using BDB tables
> #bdb_cache_size                 = 4M
> #bdb_max_lock                   = 10000
>
> # The following is the InnoDB configuration
> #
> # the rest of the innodb config follows:
> # don't eat too much memory, we're trying to be safe on 64Mb boxes.
> # you might want to bump this up a bit on boxes with more RAM
> innodb_buffer_pool_size         = 1G
> # this is the default, increase if you have lots of tables
> innodb_additional_mem_pool_size = 128M
> #
> # i'd like to use /var/lib/mysql/innodb, but that is seen as a database
> :-(
> # and upstream wants things to be under /var/lib/mysql/, so that's the
> route
> # we have to take for the moment
> #innodb_data_home_dir           = /var/lib/mysql/
> innodb_data_home_dir            = /data/mysql/
> innodb_log_arch_dir             = /data/mysql/
> innodb_log_group_home_dir       = /data/mysql/
>
> datadir                         = /data/mysql/
> #innodb_file_per_table
>
> # you may wish to change this size to be more suitable for your system
> # the max is there to avoid run-away growth on your machine
> innodb_data_file_path           = ibdata1:10M:autoextend
> # we keep this at around 25% of of innodb_buffer_pool_size
> # sensible values range from 1MB to
> (1/innodb_log_files_in_group*innodb_buffer_pool_size)
> innodb_log_file_size            = 256M
> # this is the default, increase if you have very large transactions.
> innodb_log_buffer_size          = 256M
> # this is the default, and won't hurt you.
> # you shouldn't need to tweak it.
> set-variable                    = innodb_log_files_in_group=2
> # see the innodb config docs, the other options are not always safe
> innodb_flush_log_at_trx_commit  = 1
> innodb_lock_wait_timeout        = 50
>
>
> [mysqldump]
> quick
> max_allowed_packet              = 16M
>
> [mysql]
> # Remove the next comment character if you are not familiar with SQL
> #safe-updates
>
> [isamchk]
> key_buffer                      = 20M
> sort_buffer_size                = 20M
> read_buffer                     = 2M
> write_buffer                    = 2M
>
> [myisamchk]
> key_buffer                      = 20M
> sort_buffer_size                = 20M
> read_buffer                     = 2M
> write_buffer                    = 2M
>
> [mysqlhotcopy]
> interactive-timeout
>
> #vim: set tabstop=4 :
> #vim: set shiftwidth=4 :
>
>
> Krishna Chandra Prajapati
>