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ERROR 1049 (42000): Unknown database 'tweetdata' Mysql – Magento

I have MySQL installed on an Ubuntu machine. When I run use TWEETDATA command it shows me following error

ERROR 1049 (42000): Unknown database 'tweetdata'

But the database TWEETDATA does exist in the db. Below is the output of show databases command.

+--------------------+
| Database           |
+--------------------+
| information_schema |
| TWEETDATA          |
| cs340              |
| magento            |
| mysql              |
| ofbiz              |
| ofbizolap          |
| ofbiztenant        |
| performance_schema |
| sys                |
+--------------------+
10 rows in set (0.00 sec)

Any ideas what might be wrong here? Could the large size of database cause this. This db was working a couple of days ago and it has over 49 million rows in one table. Could this be an issue?
Furthermore, this is the change we made to /etc/mysql/conf.d/mysql.cnf file in this period

[client]
default-character-set=utf8mb4
[mysql]
default-character-set=utf8mb4
[mysqld]
collation-server = utf8mb4_unicode_ci
init-connect='SET NAMES utf8mb4'
character-set-server = utf8mb4
lower_case_table_names=1

Could this change have caused any trouble?

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2

Answers


  1. 0

    Check the data directory of MySQL and confirm is the directory TWEETDATA has required permission and ownership or not ?

    If this directory don’t have any of the above then set it properly with chmod and chown command.

    Thanks

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  2. 0

    Comment out lower_case_table_names=1 and restart your mysqld service,
    otherwise mysql will automatically translate uppercase TWEETDATA that you keyed in into lowercase tweetdata, so it’ll never find TWEETDATA

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