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Installing InnoDB: Difference between revisions

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==Enabling InnoDB for MySQL==
A lot of users like me have had issues enabling (or as you can call it installing) InnoDB within MySQL. InnoDB support is available in MySQL as a lot of users on the forum pointed out, but not enabled by default. To enable it, please follow the instructions below.
<br />
1. Open the W:\usr\local\mysql\bin\my-small.cnf file in Notepad or any other text editor of your choice. <br />
2. Make sure the following lines appear as shown below - <br />


# Uncomment the following if you are NOT using innodb tables <br />
Open this file:
#skip-innodb <br />


# Uncomment the following if you are using Innobase tables <br />
UniServer\usr\local\mysql\my.ini
innodb_data_file_path = ibdata1:100M <br />
innodb_data_home_dir = /usr/local/mysql/data/ <br />
innodb_log_group_home_dir = /usr/local/mysql/data/ <br />
innodb_log_arch_dir = /usr/local/mysql/data/ <br />
set-variable = innodb_mirrored_log_groups=1 <br />
set-variable = innodb_log_files_in_group=3 <br />
set-variable = innodb_log_file_size=5M <br />
set-variable = innodb_log_buffer_size=8M <br />
innodb_flush_log_at_trx_commit=1 <br />
innodb_log_archive=0 <br />
set-variable = innodb_buffer_pool_size=16M <br />
set-variable = innodb_additional_mem_pool_size=2M <br />
set-variable = innodb_file_io_threads=4 <br />
set-variable = innodb_lock_wait_timeout=50 <br />


3. You can modify the values to suit your needs, but the default ones work great. <br />
Search for the following line(s) and comment out '''skip-innodb''' (as shown) to activate InnoDB.
4. Restart the server.  <br />
 
5. Go to PHPMyAdmin and click on "Show MySQL Runtime Information".  <br />
&#35; Note: The innodb block is enabled/disabled using a single line <br>
6. Click on InnoDB hyperlink which will take you to a lower part of the same page. Just under that information table, you will find a link for detailed &quot;InnoDB Status&quot;. &lt;br /&gt;
&#35; Uncomment the next line to disable innodb tables. Comment line to enable innodb tables
7. On the top, what you are most likely to see is &quot;InnoDB is disabled for this server&quot;.  If not, you are good to go. &lt;br /&gt;
8. To resolve the issue in #7, shutdown the server once more. &lt;br /&gt;
&#35; skip-innodb
9. Go to W:\usr\local\mysql\data\ and delete (or at least temporarily move) the files beginning with &quot;ib_logfile*&quot; and &quot;ibdata*&quot; where * indicates a number. &lt;br /&gt;
 
10. Restart the server, and follow steps 5-7 above. You should hopefully be able to now see &quot;InnoDB is available on this MySQL server&quot;. &lt;br /&gt;
That's it; no other changes needed, except to restart the server. 
 
 
=== Older versions (pre-5.x-Nano) ===
InnoDB support is available in MySQL as a lot of users on the forum pointed out, but not enabled by default. To enable it, please follow the instructions below.
<br />
1. Open the W:\usr\local\mysql\bin\my-small.cnf file in Notepad or any other text editor of your choice. <br />
2. Make sure the following lines appear as shown below - <br />
 
&#35; Uncomment the following if you are NOT using innodb tables <br />
&#35;skip-innodb <br />
 
&#35; Uncomment the following if you are using Innobase tables <br />
innodb_data_file_path = ibdata1:100M <br />
innodb_data_home_dir = /usr/local/mysql/data/ <br />
innodb_log_group_home_dir = /usr/local/mysql/data/ <br />
innodb_log_arch_dir = /usr/local/mysql/data/ <br />
set-variable = innodb_mirrored_log_groups=1 <br />
set-variable = innodb_log_files_in_group=3 <br />
set-variable = innodb_log_file_size=5M <br />
set-variable = innodb_log_buffer_size=8M <br />
innodb_flush_log_at_trx_commit=1 <br />
innodb_log_archive=0 <br />
set-variable = innodb_buffer_pool_size=16M <br />
set-variable = innodb_additional_mem_pool_size=2M <br />
set-variable = innodb_file_io_threads=4 <br />
set-variable = innodb_lock_wait_timeout=50 <br />
 
3. You can modify the values to suit your needs, but the default ones work great. <br />
4. Restart the server.  <br />
5. Go to PHPMyAdmin and click on "Show MySQL Runtime Information".  <br />
6. Click on InnoDB hyperlink which will take you to a lower part of the same page. Just under that information table, you will find a link for detailed "InnoDB Status". <br />
7. On the top, what you are most likely to see is "InnoDB is disabled for this server".  If not, you are good to go. <br />
8. To resolve the issue in #7, shutdown the server once more. <br />
9. Go to W:\usr\local\mysql\data\ and delete (or at least temporarily move) the files beginning with "ib_logfile*" and "ibdata*" where * indicates a number. <br />
10. Restart the server, and follow steps 5-7 above. You should hopefully be able to now see "InnoDB is available on this MySQL server". <br />


That's it. Enjoy.
That's it. Enjoy.
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