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Wednesday 28 May 2008 2:43:32 pm
<i>Thanks for your information. We want to develop web sites with eZ publish 4.0 and Oracle, but that's impossible for this moment, right?</i>
Right now, it is.
We will release eZ Oracle 2.0 together with eZ Publish 4.1, quite soon eZP 4.0 will not be officially supported, at least for now, but if you do not use the eZ cluster functionality, the eZ Oracle extension should work flawlessly (ie. there have been API changes in the cluster code between eZP 4.0 and 4.1 but not in other parts of the code related with the db layer). We might one day release fully supported, backward-compatible versions of the oracle connector, for eZP 3.9, 3.10 and 4.0. But I would really suggest you upgrade to 4.1 instead. <i>Besides, could you please let me know if the eZ Oracle extension can work with the RAC - "Real Application Clusters" or any other failover & scalability solutions in Oracle?</i>
It "should" work out of the box.
This means the RAC changes are implemented at the level of the oci client, and not exposed to php or eZP - RAC is completely transparent to an eZP install.
Having said that, we did not (yet) test the eZ Oracle extension against a RAC setup, so we can not yet certify it (testing is the only way to make sure there are no regressions at all, even when there "should" be none)
<i>I know that eZ publish is not working for MySQL Cluster (maybe I am wrong), but we couldn't find any useful information about the MySQL Cluster in the forum.
And the MySQL Slave Servers can only be used for "read-only" site access, that's not enough in most cases. Because the "master" server does not support failover.
I don't know if this is the right place to ask questions about Oracle Clusters and MySQL clusters. But I really appreciate for your feedbacks.</i> I am not a mysql guru.
Master-slave setup with one rw and many ro databases is a common setup for mysql web clusters, given usage patterns and mysql strenghts/weaknesses. That's why it has been implemented in eZP.
Afaik you can set up a single active mysql db with failover on a standby replicated instance, and I think you can even set up a master to fail over to a replicated slave, which would then become the new master.
I am pretty sure that there are other replication solutions for mysql that are completely transparent to eZP. They might be available as non-free or non-oss, and require different setups.
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