Introduction This posting explains how to use parallelism to improve performance of Oracle Event Processing (OEP) applications with active-active...
Introduction This posting explains how to use parallelism to improve performance of Oracle Event Processing (OEP) applications with active-active high-availability (HA) deployments. Parallelism is exploited for performance gain in each one of the server instances of an HA configuration. This is achieved by identifying sections of an application’s processing pipeline that can operate in parallel, and, therefore, can be mapped to separate processing threads. Both pipeline and...
Introduction This posting explains how to use parallelism to improve performance of Oracle Event Processing (OEP) applications with active-active high-availability (HA) deployments. Parallelism is...
Recently, I came across a requirement of serving 50,000 concurrent users within an OAM deployment. To hold this requirement, the first thing we need to make...
Recently, I came across a requirement of serving 50,000 concurrent users within an OAM deployment. To hold this requirement, the first thing we need to make sure that the web tier scales well and can support such large number of concurrent requests at the same time. Tuning of OHS configuration parameters is always a challenge, especially when it belongs to an OAM stack where the requirement is to support such high number of concurrent sessions. One has to be careful as...
Recently, I came across a requirement of serving 50,000 concurrent users within an OAM deployment. To hold this requirement, the first thing we need to make sure that the web tier scales well and...
I've talked about the subject of long lived TCP connections and load balancers for years, explaining to people why they may not need or want to use a load...
I've talked about the subject of long lived TCP connections and load balancers for years, explaining to people why they may not need or want to use a load balancer between two servers. Each time I explain it I remind myself that I should probably write it down so I can just point to the URL. So today is the day that I write it down for you. Before we get into the guts of this we should start by defining a couple of terms: By long-lived connection I mean TCP connections that...
I've talked about the subject of long lived TCP connections and load balancers for years, explaining to people why they may not need or want to use a load balancer between two servers. Each time I...
Introduction When leveraging the Oracle Database Adapter (DB Adapter) using the Distributed Polling feature, understanding what is going on under the covers can...
Introduction When leveraging the Oracle Database Adapter (DB Adapter) using the Distributed Polling feature, understanding what is going on under the covers can help with the tuning effort. This blog will attempt to demystify the configuration and behavior of Distributed Polling with SKIP LOCKED. Main Article Oracle SOA Suite 11g offers a set of Java EE Connector Architecture (JCA) technology adapters for various integration scenarios. One of the more common scenarios is...
Introduction When leveraging the Oracle Database Adapter (DB Adapter) using the Distributed Polling feature, understanding what is going on under the covers can help with the tuning effort. This blog...
Note: This article provides an approach to implement compression in OSB 11g. OSB 12c supports compression OOTB. For details please refer to the following...
Note: This article provides an approach to implement compression in OSB 11g. OSB 12c supports compression OOTB. For details please refer to the following documentation: Compressed HTTP Request and Response Payload Support HTTP compression is a mechanism that enables client and server to exchange compressed data over HTTP to improve performance by better use the bandwidth. Oracle Service Bus (OSB) doesn't support gzip compression by default, this might create a potential...
Note: This article provides an approach to implement compression in OSB 11g. OSB 12c supports compression OOTB. For details please refer to the following documentation: Compressed HTTP Request...
Introduction This document will detail how to calculate maximum disk read and write rates for a single process using the UNIX "dd" and "time" commands. Not...
Introduction This document will detail how to calculate maximum disk read and write rates for a single process using the UNIX "dd" and "time" commands. Not covered in this document are performance differences using different RAID (redundantly arrayed independent disks) configurations, limitations of the system bus speeds and limitations of controller buffer speeds. Main Article Perhaps the most common bottleneck for replication is the speed at which data can be read from and...
Introduction This document will detail how to calculate maximum disk read and write rates for a single process using the UNIX "dd" and "time" commands. Not covered in this document are...
Introduction This technical document describes how to combine the GoldenGate logdump utility, UNIX shell scripting and MS Excel to generate a detailed summary...
Introduction This technical document describes how to combine the GoldenGate logdump utility, UNIX shell scripting and MS Excel to generate a detailed summary report to aid in manual load balancing of tables across multiple GoldenGate replication processes. This document is not intended to be a comprehensive overview of all replication performance techniques; it is limited to the usage of logdump to collect table level statistics, how to import those statistics into a...
Introduction This technical document describes how to combine the GoldenGate logdump utility, UNIX shell scripting and MS Excel to generate a detailed summary report to aid in manual load balancing of...
Introduction The purpose of this document is to outline the file system mount options to use when configuring GoldenGate to run with NFS mounted file system....
Introduction The purpose of this document is to outline the file system mount options to use when configuring GoldenGate to run with NFS mounted file system. Main Article Unless IO buffering is OFF, NFS mounts should not be used when running any Oracle GoldenGate processes. The danger occurs when one process registers the end of a trail file or transaction log and moves on to the next in sequence before all the data in the NFS IO buffer gets flushed to disk. The net result...
Introduction The purpose of this document is to outline the file system mount options to use when configuring GoldenGate to run with NFS mounted file system. Main Article Unless IO buffering is OFF,...
Introduction Typically, a Service Oriented Architecture (SOA) system has multiple and different services receiving the same type of messages. For example, a...
Introduction Typically, a Service Oriented Architecture (SOA) system has multiple and different services receiving the same type of messages. For example, a purchase order can trigger either creation or modification of an order, which may be handled by different business flows connecting to different back-end systems. Ideally, you provide to the outside world a coarse grain service for order creation, and another coarse grain service for order modification, etc, so that an...
Introduction Typically, a Service Oriented Architecture (SOA) system has multiple and different services receiving the same type of messages. For example, a purchase order can trigger either creation...
