cluster only enqueue and replication

[Former Member]

Dear SDNers:

We are using SUN cluster technology to implement mission-critical Java systems.

Limited by hardware and budget, we plan to cluster enqueue and replicator ONLY.

Therefore JC00 will not be clustered.

Do you think this will meet all HA requirement? I doubt but management insists ...

Please help advise.

Thanks a lot!

[ashish_mishra2 · Accepted solution]

Hi Joy,

Though this won't be a complete high available environment but by means of enqueue and ERS cluster, you can achieve partial HA.

Your SAP locks will be safe if you cluster enqueue and implement ERS also.

But make sure that you cluster enqueue along with message server that will be best approach.

Your JC (CI) DB can run together. Where as ENMSG (SCS/ASCS) can be clubbed together. In this scenario your ERS will be running on FO node. In case of Enqueue crashes, it will switch to FO node, acquire all locks from ERS and your SAP locks will be safe.

However in above scenario your DB and CI will not be safe in case of any hardware failure.

Cheers !!!

Ashish

[sunny_pahuja2]

Hi,

I don't think so it will help you because ASCS or database is SPOF. What you will achieve by clustering Enqueue and replication ?

Thanks

Sunny