Importing wikipedia dump to MySql

Question

I am trying to import a .bz2 file into MySql database but I am getting this error:

Fatal error: Out of memory (allocated 386400256) (tried to allocate 378535937 bytes) in C:\wamp\apps\phpmyadmin4.6.4\libraries\plugins\import\ImportXml.php on line 90

I tried so many solutions here including raising upload_max_filesize , memory_limit and post_max_size

Any help would be really appreciated!

Answer 1

If you can, use MySQL directly without PHP:

wget http://dumps.wikimedia.org/enwiki/latest/enwiki-latest-page.sql.gz
wget http://dumps.wikimedia.org/enwiki/latest/enwiki-latest-category.sql.gz
wget http://dumps.wikimedia.org/enwiki/latest/enwiki-latest-categorylinks.sql.gz
wget http://dumps.wikimedia.org/enwiki/latest/enwiki-latest-redirect.sql.gz
wget http://dumps.wikimedia.org/enwiki/latest/enwiki-latest-pagelinks.sql.gz
wget http://dumps.wikimedia.org/enwiki/latest/enwiki-latest-langlinks.sql.gz

gzip -d enwiki-latest-page.sql.gz
gzip -d enwiki-latest-category.sql.gz
gzip -d enwiki-latest-categorylinks.sql.gz
gzip -d enwiki-latest-redirect.sql.gz
gzip -d enwiki-latest-pagelinks.sql.gz
gzip -d enwiki-latest-langlinks.sql.gz

# Don't need this if MySQL is configured correctly.
# SET GLOBAL innodb_file_per_table = 1;
# SET GLOBAL general_log = 'OFF';
# SET FOREIGN_KEY_CHECKS=1;
# SET GLOBAL character_set_server = utf8mb4;
# SET NAMES utf8mb4;

CREATE DATABASE wiki_en; USE wiki_en;

# Don't need this if MySQL is configured correctly.
# ALTER DATABASE wiki_en CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci;

mysql -u root -p wiki_en < enwiki-latest-page.sql
mysql -u root -p wiki_en < enwiki-latest-redirect.sql
mysql -u root -p wiki_en < enwiki-latest-category.sql
mysql -u root -p wiki_en < enwiki-latest-categorylinks.sql
mysql -u root -p wiki_en < enwiki-latest-pagelinks.sql
mysql -u root -p wiki_en < enwiki-latest-langlinks.sql

# Indicative filesizes:
# -rw-r--r-- 1 root   root    35G Jun  2 07:01 enwiki-latest-pagelinks.sql
# -rw-r--r-- 1 root   root    13G Jun  2 07:45 enwiki-latest-categorylinks.sql
# -rw-r--r-- 1 root   root   4.3G Jun  2 11:08 enwiki-latest-page.sql
# -rw-r--r-- 1 root   root   900M Jun  2 11:03 enwiki-latest-langlinks.sql
# -rw-r--r-- 1 root   root   378M Jun  2 11:10 enwiki-latest-redirect.sql
# -rw-r--r-- 1 root   root   117M Jun  2 11:03 enwiki-latest-category.sql

If you really must use PHP, you need to set the memory limit for PHPMyAdmin (see this answer ), and also make sure you've run the MySQL above.