Lately i have been involved in multiple HA configurations for Ebusiness suite, stand alone forms, iAS. Each of these are well tried and tested methods and there are only few consequences where these fail during initial configuration. But with stand alone reports HA atleast to my knowledge there is very little documentation or customers who implement reports load balancing is very less.
Either customers choose to keep reports server on a different node and route all their requests to 1 node or use session persistance and run report on the same sever where forms requests are routed.
For standalone reports mainly ones needs to understand that reports can run as standalone reports process or in-process(oc4j BI Forms).
By default when you install 10GiAS(with forms and reports), oc4j services for forms and reports are configured into 1 single oc4j call oc4j_BIForms.
One can configure stand alone reports after default installation, use metalink document,
862546.1 : Is it possible to Rename Default Stand Alone Reports Server Name in Reports 11g?
855894.1 : "How to Change The Name Of in-process Reports Server in 11g".
There are pros and cons for using standalone reports server one major pro is that if you want to restart reports server you do not have to restart forms, in-process reports server is always dependent on forms. Check the following metalink document for more differences.
274936.1 : Differences and/or Pros and Cons of Using The In-Process Versus Stand-Alone Report Server
Reports execution depends on the method that is used to call the reports. While implementing HA documents below gives more inisght on how to implement HA for your implementation.
363699.1 : Understanding Reports Execution from Forms Under High Availability
333981.1 : Migration to 10.1.2.0.2 with Report Server Clustering
435025.1 : Examples of Building Highly Available, Highly Secure, Scalable OracleAS 10g Solutions
For more information on Oracle Application Server High Availability refer to Oracle document on download.oracle.com/docs search for documet B14003-03,
Below url will directly take to HA section for reports.
http://download.oracle.com/docs/cd/B14099_17/core.1012/b14003/mt_comp.htm#CEGHAHGH
Either customers choose to keep reports server on a different node and route all their requests to 1 node or use session persistance and run report on the same sever where forms requests are routed.
For standalone reports mainly ones needs to understand that reports can run as standalone reports process or in-process(oc4j BI Forms).
By default when you install 10GiAS(with forms and reports), oc4j services for forms and reports are configured into 1 single oc4j call oc4j_BIForms.
One can configure stand alone reports after default installation, use metalink document,
862546.1 : Is it possible to Rename Default Stand Alone Reports Server Name in Reports 11g?
855894.1 : "How to Change The Name Of in-process Reports Server in 11g".
There are pros and cons for using standalone reports server one major pro is that if you want to restart reports server you do not have to restart forms, in-process reports server is always dependent on forms. Check the following metalink document for more differences.
274936.1 : Differences and/or Pros and Cons of Using The In-Process Versus Stand-Alone Report Server
Reports execution depends on the method that is used to call the reports. While implementing HA documents below gives more inisght on how to implement HA for your implementation.
363699.1 : Understanding Reports Execution from Forms Under High Availability
333981.1 : Migration to 10.1.2.0.2 with Report Server Clustering
435025.1 : Examples of Building Highly Available, Highly Secure, Scalable OracleAS 10g Solutions
For more information on Oracle Application Server High Availability refer to Oracle document on download.oracle.com/docs search for documet B14003-03,
Below url will directly take to HA section for reports.
http://download.oracle.com/docs/cd/B14099_17/core.1012/b14003/mt_comp.htm#CEGHAHGH
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