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What is RCU in Obiee?

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What is RCU in Obiee?

OBIEE uses the Repository Creation Utility, or RCU, to create a set of schemas that are required and hold internal metadata such as Usage Tracking and Scheduler tables. When you run RCU, you are given a GUI interface to specify the database connection details, schema prefixes, and so on.

What is RCU configuration?

The Repository Configuration Utility (RCU) is a necessary prerequisite for the creation of clustered domains in WebLogic 12c. It is recommended to install Forms and Reports Services as a clustered domain, even if it is for a single node, so it is also a prerequisite for those installations. Assumptions.

What is RCU DB?

1.2 RCU Features. Repository Creation Utility is a graphical and CLI-based tool used to create and manage Oracle Fusion Middleware database schemas.

How do I run RCU in WebLogic?

To run the rcu go to oracle_common bin folder.

  1. This will launch the RCU wizard.
  2. Provide oracle database details and click on next.
  3. It check prerequisites.
  4. Specify schema prefix and choose the components which you need.
  5. it will check prerequisites.
  6. choose same password for all the schemas.
  7. Click on next.

How do I install RCU on Linux?

2.2 Using RCU with Java Access Bridge (Windows Only)

  1. Install Java Access Bridge.
  2. Copy the access-bridge. jar and jaccess-1_4. jar from your installation location to the jre\lib\ext directory.
  3. Copy the WindowsAccessBridge. dll , JavaAccessBridge.
  4. Copy the accessibility. properties file to the jre\lib directory.

How do I run Oracle RCU?

2.2. 2 Configure RCU to Use Java Access Bridge

  1. Display System in the Control Panel.
  2. Select the Advanced tab.
  3. Click the New button under the System Variable list.
  4. In the Variable Name field, enter ORACLE_OEM_CLASSPATH .
  5. In the Variable Value field, enter the full path to access-bridge.
  6. Click OK.

Why is RCU used?

In computer science, read-copy-update (RCU) is a synchronization mechanism that avoids the use of lock primitives while multiple threads concurrently read and update elements that are linked through pointers and that belong to shared data structures (e.g., linked lists, trees, hash tables).

How do I start RCU?

  1. Starting RCU.
  2. Using RCU with Java Access Bridge (Windows Only) Install Java Access Bridge. Configure RCU to Use Java Access Bridge.
  3. Creating Schemas. Do all Schemas Have to Reside in the Same Database?
  4. Dropping Schemas.
  5. Using the Repository Creation Utility CLI. CLI Syntax and Parameters.

How do I drop a schema in RCU?

Delete RCU Schemas for Essbase

  1. In the Oracle Home where Fusion Middleware is installed, open a terminal in /oracle_common/bin .
  2. Run the rcu command to launch the Repository Creation Utility.
  3. On the Welcome page, click Next.
  4. On the Create Repository page, click Drop Repository, and then Next.

What is RCU callback?

The Read-Copy-Update (RCU) system is a lockless mechanism for mutual exclusion inside the kernel. As a consequence of performing RCU operations, call-backs are sometimes queued on CPUs to be performed at a future moment when removing memory is safe.

What is RCU LWN?

RCU defines and uses efficient and scalable mechanisms for publishing and reading new versions of an object, and also for deferring the collection of old versions. These mechanisms distribute the work among read and update paths in such a way as to make read paths extremely fast.

How do I download from RCU?

  1. Install Dependencies for the Oracle Database Software.
  2. Download the Oracle Database Software Installer.
  3. Start the Oracle Database Software Installer.
  4. Install the Oracle Database Software.
  5. Execute Configuration Scripts to Access the Oracle Database Software.
  6. Change the Oracle Database Listener Configuration File.

How do I run RCU on Linux?

  1. 2.1 Starting RCU. To start RCU, insert the RCU CD-ROM and start RCU from the rcuHome/bin (on UNIX) or rcuHome\bin (on Windows) directory:
  2. 2.2 Using RCU with Java Access Bridge (Windows Only)
  3. 2.3 Creating Schemas.
  4. 2.4 Dropping Schemas.
  5. 2.5 Using the Repository Creation Utility CLI.

What is SRCU?

SRCU provides an RCU-like set of primitives that permit general sleeping in the SRCU read-side critical sections. However, it is important to note that SRCU has been used only in prototype code, though it has passed the RCU torture test. It will be very interesting to see what use, if any, SRCU sees in the future.

What is RCU CPU stall?

A CPU failed in a running system, becoming unresponsive, but not causing an immediate crash. This resulted in a series of RCU CPU stall warnings, eventually leading the realization that the CPU had failed. The RCU, RCU-sched, and RCU-tasks implementations have CPU stall warning.

What is Rcu_preempt?

The preempt parameter indicates if task blocked with help of schedule() or if it was a kernel path (such as return from interrupts or system calls) that called into the scheduler to preempt the currently running task. rcu_note_context_switch first calls rcu_preempt_note_context_switch for RCU-preempt to take note.

What is Ksoftirqd?

ksoftirqd is a per-cpu kernel thread that runs when the machine is under heavy soft-interrupt load. Soft interrupts are normally serviced on return from a hard interrupt, but it’s possible for soft interrupts to be triggered more quickly than they can be serviced.

What are Kworker threads?

“kworker” is a placeholder process for kernel worker threads, which perform most of the actual processing for the kernel, especially in cases where there are interrupts, timers, I/O, etc. These typically correspond to the vast majority of any allocated “system” time to running processes.