Bug #3387 mysqld doesn't restart after upgrading from 3.23 because of missing link /share
Submitted: 4 Apr 2004 9:28 Modified: 5 Apr 2004 7:18
Reporter: a b Email Updates:
Status: Not a Bug Impact on me:
None 
Category:MySQL Server: Installing Severity:S3 (Non-critical)
Version:4.0.x OS:Linux (SuSE Linux 8.3)
Assigned to: CPU Architecture:Any

[4 Apr 2004 9:28] a b
Description:
After upgrading from 3.23.x to 4.0.x mysqld does not restart because of missing language files in /share.

How to repeat:
Install 3.23 on a fresh Suse Linux 8.3 and upgrade to 4.0.x

Suggested fix:
Modify mysqld_safe so that it tests for the existence of /share and looks in /usr/share if /share was not found in the system.
[5 Apr 2004 7:18] Alexander Keremidarski
Sorry, but the bug system is not the appropriate forum for asking
support questions. Your problem is not the result of a bug.
For a list of more appropriate places to ask for help using MySQL
products, please visit http://www.mysql.com/support/

Thank you for your interest in MySQL.

Additional info:

If upgraded properly MySQL 4.0 will install all necesarry files under share directory and startup file which points to the proper location of it.

In your case you have some kind of partial upgrade.