MYSQL 导出多个库
root@Debian:~# cat dumphelp.shDATABASES_TO_EXCLUDE="test"
EXCLUSION_LIST="'information_schema','mysql'"
for DB in `echo "${DATABASES_TO_EXCLUDE}"`
do
EXCLUSION_LIST="${EXCLUSION_LIST},'${DB}'"
done
SQLSTMT="SELECT schema_name FROM information_schema.schemata"
SQLSTMT="${SQLSTMT} WHERE schema_name NOT IN (${EXCLUSION_LIST})"
MYSQLDUMP_DATABASES="--databases"
for DB in `mysql -uroot -ANe"${SQLSTMT}"`
do
MYSQLDUMP_DATABASES="${MYSQLDUMP_DATABASES} ${DB}"
done
MYSQLDUMP_OPTIONS="--single-transaction --skip-opt --create-options--master-data=2 -q -uroot --default-character-set=utf8"
mysqldump ${MYSQLDUMP_OPTIONS} ${MYSQLDUMP_DATABASES} > MySQLDatabases.sql
上述脚本参数-B mysql做了限制1024 ，所以对脚本进行了优化。现在可以导出超过1024个库的mysql
DATABASES_TO_EXCLUDE="test,performance_schema"
EXCLUSION_LIST="'information_schema','mysql',test"
for DB in `echo "${DATABASES_TO_EXCLUDE}"`
do
EXCLUSION_LIST="${EXCLUSION_LIST},'${DB}'"
done
SQLSTMT="SELECT schema_name FROM information_schema.schemata"
SQLSTMT="${SQLSTMT} WHERE schema_name NOT IN (${EXCLUSION_LIST})"
MYSQLDUMP_DATABASES="--databases"
MYSQLDUMP_OPTIONS="--single-transaction --skip-opt --create-options--master-data=2 -q -uroot --default-character-set=utf8"
for DB in `mysql -uroot -ANe"${SQLSTMT}"`
do
mysqldump ${MYSQLDUMP_OPTIONS} $MYSQLDUMP_DATABASES $DB >> MySQLDatabases.sql
done
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