Prerequisites

Before installing Always-On Monitoring, ensure that the following prerequisite tasks have been performed:

Environment Setup

  • Install or identify an Oracle Database instance to hold the Always-On Monitoring repository.

  • Enterprise Manager must be upgraded to 13.4. In addition, the Management Agent should also be upgraded to 13.4.

  • If you do not have database administrator access, you need to ask the DB administrator to add you to the Always-On Monitoring repository. You can use the script found in Granting Required Privileges to the Always-On Monitoring Schema Owner.

    Save the EM key to the Enterprise Manager repository. See Saving the Em Key for more information.

Java Requirements

  • JDK8 must be installed in the environment where the user will run Always-On Monitoring (including emsca). The JAVA_HOME environment variable must point to the JDK8 location.

System Resource Requirements

  • The number of open file descriptors used by Always-On Monitoring is http.queueSize + http.maxThreads. Always-On Monitoring also uses the database connection pool. The number of open database connections ranges between the number of active threads up to a maximum of 100 connections.

  • Maximum memory requirement is estimated at 10 Megabytes per thread. Memory demand peaks when Always-On Monitoring is first started because the Agents must communicate the complete status of all their monitored targets.