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Anyway to downrage Mysql 5 to Mysql4.0 ?

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  #1  
Old 08-21-2006, 06:34 AM
justbenice justbenice is offline
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Anyway to downrage Mysql 5 to Mysql4.0 ?


Hi
I am running a server with directadmin , centos 64bit, apache2, php5, mysql5 and i got some big problem with mysql5.0 so i need to downgrade to mysql 4.0 ( Need 4.0 because it dont have collation ) . I'v tried to rpms -e all of mysql 5 pakage and install mysql 4 rpms but it doesnt work. Anyone know how to do it ?
Thank you.
Ken.

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  #2  
Old 08-21-2006, 06:40 AM
Rus Foster Rus Foster is offline
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I don't think you can go back as the SQL tables are compatible. If you don't have any data you want then I would suggest a reload

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  #3  
Old 08-21-2006, 08:09 AM
zupanm zupanm is offline
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you can dump all databases in mysql 4.0

mysqldump -u root -p --compatible=mysql40 --all-databases > file.sql


then you remove 5.0 and probably need to get rid of the DB dir.. but to be safe i'd just move the like /var/lib/mysql to /var/lib/mysql.OLD just in case instead of removing it.. install 4.0 and re-import the dump

mysql -u root < file.sql

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Old 08-21-2006, 08:27 AM
justbenice justbenice is offline
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hi, I'v tried it but it doesnt' complete remove Mysql5. I still see mysql client 5 in phpinfo . And when i instasll mysql4 it doesn't start up.
About a database,i have database backup in mysql 4.0 so it doesn't matter about a compatible

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Old 08-21-2006, 08:35 AM
zupanm zupanm is offline
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well you have to recompile php to re-link against the mysql4 libraries

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  #6  
Old 08-23-2006, 11:53 AM
justbenice justbenice is offline
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Thanks, i will try it .

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  #7  
Old 08-23-2006, 01:57 PM
justbenice justbenice is offline
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Ok,i recompile php and when i start apache i got this :
Cannot load /usr/lib/apache/libphp5.so into server: libmysqlclient.so.15: cannot open shared object file: No such file or directory

What should i do now ? Mysql4.0 i install from rpms.

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Old 08-23-2006, 03:51 PM
zupanm zupanm is offline
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seems to me that is still the php5 rpm?

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  #9  
Old 08-23-2006, 03:53 PM
timdorr timdorr is offline
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Quote:
Originally Posted by justbenice
Ok,i recompile php and when i start apache i got this :
Cannot load /usr/lib/apache/libphp5.so into server: libmysqlclient.so.15: cannot open shared object file: No such file or directory

What should i do now ? Mysql4.0 i install from rpms.
Did you install the client RPMs as well as the server RPMS? Did you recompile PHP?

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  #10  
Old 08-23-2006, 05:27 PM
cywkevin cywkevin is offline
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Make sure you get the client devel and server mysql rpms.

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