Error S1004 when logging in to Enterprise Server

When logging in to Enterprise Server, the following error can sometimes appear:

Database error (S1004)

This can have different causes, each with their own solution.

Scenario 1: The issue occurred after some videos got interrupted

Restarting the database server has been known to resolve this.

Scenario 2: MYSQL was not sufficiently optimized for productivity and memory usage

The following settings of the my.cnf file have been known to resolve the issue:

Note: The system on which this was implemented had 25Gb of physical RAM.

key_buffer_size=256M 
max_allowed_packet=4M 
innodb_buffer_pool_size=2048M 
innodb_log_file_size=250M 
innodb_log_buffer_size=16M 
innodb_additional_mem_pool_size=200M 
tmp_table_size=256M 
innodb_flush_log_at_trx_commit=0 
table_cache=1024 
thread_cache_size=16 
thread_concurrency=8 
myisam_sort_buffer_size=64M