# Example MySQL config file for large systems. # # This is for a large system with memory = 512M where the system runs mainly # MySQL. # # You can copy this file to # /etc/my.cnf to set global options, # mysql-data-dir/my.cnf to set server-specific options (in this # installation this directory is /home/user/sw/mysql5.0.45/var) or # ~/.my.cnf to set user-specific options. # # In this file, you can use all long options that a program supports. # If you want to know which options a program supports, run the program # with the "--help" option. # The following options will be passed to all MySQL clients [client] #password = your_password port = 3306 socket = /tmp/mysql.sock # Here follows entries for some specific programs # The MySQL server [mysqld] port = 3306 socket = /tmp/mysql.sock skip-locking #Added by shrikant on 02jun10..earlier this param was not there wait_timeout = 20 # changed by sameer 15/11/2008 #key_buffer = 256M # key_buffer value commented by Rajeev on 30/11/2009 # key_buffer = 512M # end changed by sameer 15/11/2008 max_allowed_packet = 16M table_cache = 256 ####table_cache = 128 # changed by sameer 15/11/2008 #sort_buffer_size = 1M #read_buffer_size = 1M # changed by Rajeev on 30/11/2009 # sort_buffer_size = 2M # read_buffer_size = 2M # read_rnd_buffer_size = 4M # myisam_sort_buffer_size = 64M # query_cache_size= 16M sort_buffer_size = 2M read_buffer_size = 2M read_rnd_buffer_size = 16M max_heap_table_size = 32M # end changed by Rajeev on 30/11/2009 # end changed by sameer 15/11/2008 thread_cache_size = 8 ####thread_cache_size = 4 # changed by Rajeev on 30/11/2009 #### - query_cache_size= 100M query_cache_size= 50M query_cache_min_res_unit = 4K #Added by shrikant #maximum-query_cache_size=100M # end changed by Rajeev on 30/11/2009 # Try number of CPU's*2 for thread_concurrency thread_concurrency = 8 ## ADDED BY SAMEER ON 07052008 connect_timeout = 30 ## ADDED BY SAMEER ON 07052008 ## ADDED BY SATYAPAL ON 27072009 for slow query log log-slow-queries=/Mysql_SAN/mysql_5130_datadir/optimus/var/slow_query_log ## ADDED BY SATYAPAL ON 27072009 transaction-isolation='READ-COMMITTED' ### -- max_connections = 100 max_connections = 50 # changed by sameer 02/10/2009 open_files_limit=8192 # changed by sameer 02/10/2009 ## ADDED BY PRASAD ON 031209 datadir=/Mysql_SAN/mysql_5130_datadir/optimus/var default-storage_engine=InnoDB ## END # Don't listen on a TCP/IP port at all. This can be a security enhancement, # if all processes that need to connect to mysqld run on the same host. # All interaction with mysqld must be made via Unix sockets or named pipes. # Note that using this option without enabling named pipes on Windows # (via the "enable-named-pipe" option) will render mysqld useless! # #skip-networking # Replication Master Server (default) # binary logging is required for replication ## ADDED BY SAMEER ON 07052008 - COMMENTED OUT #log-bin=mysql-bin ## ADDED BY SAMEER ON 07052008 # required unique id between 1 and 2^32 - 1 # defaults to 1 if master-host is not set # but will not function as a master if omitted server-id = 1 # Replication Slave (comment out master section to use this) # # To configure this host as a replication slave, you can choose between # two methods : # # 1) Use the CHANGE MASTER TO command (fully described in our manual) - # the syntax is: # # CHANGE MASTER TO MASTER_HOST=, MASTER_PORT=, # MASTER_USER=, MASTER_PASSWORD= ; # # where you replace , , by quoted strings and # by the master's port number (3306 by default). # # Example: # # CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_PORT=3306, # MASTER_USER='joe', MASTER_PASSWORD='secret'; # # OR # # 2) Set the variables below. However, in case you choose this method, then # start replication for the first time (even unsuccessfully, for example # if you mistyped the password in master-password and the slave fails to # connect), the slave will create a master.info file, and any later # change in this file to the variables' values below will be ignored and # overridden by the content of the master.info file, unless you shutdown # the slave server, delete master.info and restart the slaver server. # For that reason, you may want to leave the lines below untouched # (commented) and instead use CHANGE MASTER TO (see above) # # required unique id between 2 and 2^32 - 1 # (and different from the master) # defaults to 2 if master-host is set # but will not function as a slave if omitted #server-id = 2 # # The replication master for this slave - required #master-host = # # The username the slave will use for authentication when connecting # to the master - required #master-user = # # The password the slave will authenticate with when connecting to # the master - required #master-password = # # The port the master is listening on. # optional - defaults to 3306 #master-port = # # binary logging - not required for slaves, but recommended #log-bin=mysql-bin # Point the following paths to different dedicated disks #tmpdir = /tmp/ #log-update = /path-to-dedicated-directory/hostname # Uncomment the following if you are using BDB tables #bdb_cache_size = 64M #bdb_max_lock = 100000 # ##max_heap_table_size = 8M # ##sort_buffer_size = 1M # ##join_buffer_size = 2M # ##tmp_table_size = 8M # ##read_buffer_size = 1M # ##read_rnd_buffer_size = 2M # Uncomment the following if you are using InnoDB tables # changed by Rajeev on 30/11/2009 innodb_doublewrite = 1 innodb_rollback_on_timeout = 1 #innodb_buffer_pool_size = 16M innodb_additional_mem_pool_size = 16M innodb_log_buffer_size = 8M join_buffer_size = 4M query_cache_limit = 2M query_prealloc_size = 2M ###tmp_table_size = 32M SHRIKANT 12May #### - tmp_table_size = 32M tmp_table_size = 16M #### - max_tmp_tables = 1000 max_tmp_tables = 500 # end changed by Rajeev on 30/11/2009 #innodb_data_home_dir = /home/user/sw/mysql5.0.45/var/ innodb_data_file_path = ibdata1:10M:autoextend #added by satyapal innodb_file_io_threads = 4 innodb_thread_concurrency = 16 innodb_log_files_in_group = 2 ### - SHRI 03jun innodb_max_dirty_pages_pct = 90 innodb_max_dirty_pages_pct = 90 #innodb_log_group_home_dir = /home/user/sw/mysql5.0.45/var/ #innodb_log_arch_dir = /home/user/sw/mysql5.0.45/var/ # You can set .._buffer_pool_size up to 50 - 80 % # of RAM but beware of setting memory usage too high ###-SAT from 64 to 16 innodb_buffer_pool_size = 64M #innodb_additional_mem_pool_size = 20M # Set .._log_file_size to 25 % of buffer pool size innodb_log_file_size = 16M #innodb_log_buffer_size = 8M #innodb_lock_wait_timeout = 50 # added by satyapal default_table_type = innodb innodb_flush_log_at_trx_commit = 1 innodb_table_locks=1 innodb_locks_unsafe_for_binlog = 1 # ADDED BY PRASAD ON 150509 innodb_lock_wait_timeout = 120 # END [mysqldump] quick max_allowed_packet = 16M [mysql] no-auto-rehash # Remove the next comment character if you are not familiar with SQL #safe-updates [isamchk] # changed by Rajeev on 30/11/2009 # key_buffer = 128M # sort_buffer_size = 128M # read_buffer = 2M # write_buffer = 2M # end changed by Rajeev on 30/11/2009 [myisamchk] # changed by Rajeev on 30/11/2009 myisam_max_sort_file_size = 64M myisam_sort_buffer_size = 64M key_buffer = 128M # sort_buffer_size = 128M read_buffer = 2M write_buffer = 2M # end changed by Rajeev on 30/11/2009 [mysqlhotcopy] interactive-timeout