[TYPO3] Urgent help needed

[rocky]

Dmitry Dulepov wrote:
> Hi!
> 
> rocky wrote:
>> Hey list,
>>
>> I do not know why one of my live website designed by typo3 version 
>> 4.0.1 give me the following warning:
>>
>> Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL 
>> result resource in 
>> /home/maxsour/public_html/typo3_src-4.0.1/t3lib/class.t3lib_db.php on 
>> line 801
> 
> Firsts, go to the install tool and use database analyzer to see if any 
> of your tables need upgrades. If they need, do it. You should be able to 
> login after that.
> 
> Second (if above did not help), check tables for corruption. You can do 
> it with phpMyAdmin or with mysql command line tool (use "check table 
> XXX" and "repair table XXX" if it is corrupted).
> 
> Last (if second does not help), open t3lib/class.t3lib_db.php and insert 
> this line before line 801:
>     if (!is_resource($res)) echo mysql_error();
> You will get mysql error text on the screen. Post it here.
> 

Thanks for all of your helps.

Here is the result of insert the php line in class.t3lib_db.php

Can't open file: 'cache_hash.MYI' (errno: 145)

Can any of you help me please?