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Questions tagged [oracle-coherence]

Oracle Coherence provides replicated and distributed (partitioned) data management and caching services on top of a reliable, highly scalable peer-to-peer clustering protocol.

About

Oracle Coherence provides replicated and distributed (partitioned) data management and caching services on top of a reliable, highly scalable peer-to-peer clustering protocol. Coherence has no single points of failure; it automatically and transparently fails over and redistributes its clustered data management services when a server becomes inoperative or is disconnected from the network. When a new server is added, or when a failed server is restarted, it automatically joins the cluster and Coherence fails back services to it, transparently redistributing the cluster load. Coherence includes network-level fault tolerance features and transparent soft re-start capability to enable servers to self-heal.

It is implemented in Java and to participate in the cluster, node applications must be written in Java. It is possible to interface with the cluster through a Proxy Service by connecting using a TCP/IP

Useful books

Oracle Coherence 3.5 by Aleksandar Seovic

Links

Oracle Website with documentation and downloads

264 questions
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open source alternatives to oracle coherence?

Are there any open source alternatives to oracle coherence? (btw, how much does coherence cost anyways?)
Blankman
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Is there a tool to inspect / debug contents of Oracle Coherence caches?

I'm new to Oracle Coherence, and I'm trying to find a development / debug tool to help me validate my application. It feels like there should be a straight-forward way of viewing the keys and/or values of a cache (and possibly even run ad-hoc…
Barn
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Is Oracle Coherence stable?

Has anyone used Oracle Coherence? It looks very promising at the roadshows. My concern is whether it's a stable and robust enough to implement mission-critical financial solutions. I'd be grateful for any feedback on its performance, robustness and…
magius
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What is the difference between Cassandra vs Oracle Coherence?

Assume that Oracle Coherence is free :) Which one do you prefer? What are the architectural and feature capability differences between Oracle Coherence(Tangosol) and Cassandra? Best Regards
No Sql Wisher
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Oracle coherence with weblogic server?

Hi i am new to oracle coherence, Question 1 : my scenario is, i have to implement the oracle coherence replicated cache in my webapplication.(with weblogic server).the coherence should be the part of the weblogic server means when i start the…
Saiyansharwan
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Coherence Topology Suggestion

Data to be cached: 100 Gb data Objects of size 500-5000 bytes 1000 objects updated/inserted in average per minute (peak 5000) Need suggestion for Coherence topology in production and test (distributed with backup) number of servers nodes per…
Audun
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POF vs Java serialization for Oracle Coherence

I understand that POF is needed if you are using C++ and .Net clients. However, what are the factors that can help decide whether to use POF for Java clients using Oracle Coherence cache? As per the Oracle documentation, POF gives performance…
kira
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Process large XML docs in memory

I have a need to hold a very large number of XMLs in memory (most probably will use Oracle Coherence as distributed cache). The expectation is to hold in memory 100,000 XMLs. These XMLs are quite big - approx. 250KB each. These XMLs are requested by…
Zottek
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How can I get statistics back from a Coherence cache?

I'm looking into Oracle Coherence for a client, and one of the things they are interested in is getting statistical information back from it to understand usage patterns etc. I know I can get some information from JMX, however there is also a…
MrChris
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Is there a way to look into L2 hibernate cache?

I have a task to attach Oracle Coherence (it is cache software) in my project. One way of using it is Level2 Hibernate cache. I want to see when hibernate takes results from L2 cache. How can i do that? Both ways will be good: listener of some sort,…
foret
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How to get All Cache names present in Oracle Coherence cluster?

I am running Oracle coherence cluster and using extended clients to connect to the cluster. If there are multiple extended clients which keep joining and leaving oracle coherence cluster, then there are chances that one service created some caches…
user3912828
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When In-Memory-Data-Grid get benefit over NoSQL / NoSQL + Distributed Cache

Task: Let's imagine that hight concurrent environment, when both statements are true: You want to immediately response to user on user event. For that you need to fetch some data from data storage + process them; Your system is read/write…
VB_
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java class creation dynamically and make it accessible across the network different jvms i.e. serializable

I have a requirement of creating java classes dynamically and make it accessible different jvms across the network. I tried to use reflection and javassist tool,but nothing worked. Let me explain the scenario we are using Coherence distributed…
inj.rav
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Can NoSQL (e.g. MongoDB) replace Data Grid solutions e.g. Oracle Coherence

I'm looking for an opinion on replacing existing Data Grid (i.e. Oracle Coherence) with some document store alternative e.g. NoSQL MongoDB. I was think about the most important pros and cons and came up with: NoSQL Pros: No additional database No…
user1761377
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how to see data in coherence nodes

Let us say I am using distributed cache schema for cache called "countries" . I have three nodes. I had put some data in the cache . I want to know the data that is present on each node for this cache. Please let me know if there are tools or how…
Anil Sakala
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