Cluster Server 7.3.1 Agent for Oracle Installation and Configuration Guide - Solaris
- Introducing the Cluster Server agent for Oracle
- About the Cluster Server agent for Oracle
- How the agent makes Oracle highly available
- About Cluster Server agent functions for Oracle
- Oracle agent functions
- How the Oracle agent supports health check monitoring
- ASMInst agent functions
- Oracle agent functions
- Installing and configuring Oracle
- About VCS requirements for installing Oracle
- About Oracle installation tasks for VCS
- Installing ASM binaries for Oracle 11gR2 or 12c in a VCS environment
- Configuring Oracle ASM on the first node of the cluster
- Installing Oracle binaries on the first node of the cluster
- Installing and removing the agent for Oracle
- Configuring VCS service groups for Oracle
- Configuring Oracle instances in VCS
- Before you configure the VCS service group for Oracle
- Configuring the VCS service group for Oracle
- Setting up detail monitoring for VCS agents for Oracle
- Enabling and disabling intelligent resource monitoring for agents manually
- Administering VCS service groups for Oracle
- Pluggable database (PDB) migration
- Troubleshooting Cluster Server agent for Oracle
- Verifying the Oracle health check binaries and intentional offline for an instance of Oracle
- Appendix A. Resource type definitions
- Appendix B. Sample configurations
- Sample single Oracle instance configuration
- Sample multiple Oracle instances (single listener) configuration
- Sample multiple instance (multiple listeners) configuration
- Sample Oracle configuration with shared server support
- Sample configuration for Oracle instances in Solaris zones
- Sample Oracle ASM configurations
- Appendix C. Best practices
- Appendix D. Using the SPFILE in a VCS cluster for Oracle
- Appendix E. OHASD in a single instance database environment
Netlsnr agent functions
The listener is a server process that listens to incoming client connection requests and manages traffic to the database. The Netlsnr agent brings the listener services online, monitors their status, and takes them offline.
The Netlsnr agent is IMF-aware.
See How the Oracle and Netlsnr agents support intelligent resource monitoring.
Table: Netlsnr agent functions lists the Netlsnr agent functions.
Table: Netlsnr agent functions
Agent operation | Description |
---|---|
Online | Starts the listener process by using the following command: lsnrctl start $LISTENER |
Offline | Stops the listener process by using the following command: lsnrctl stop $LISTENER If the listener is configured with a password, the agent uses the password to stop the listener. |
Monitor | Verifies the status of the listener process. The Netlsnr agent provides two levels of monitoring, basic and detail:
|
netlsnr_imf_init | Initializes the agent to interface with the AMF kernel driver, which is the IMF notification module for Netlsnr agent. This function runs when the agent starts up. |
netlsnr_imf_getnotification | Gets notification about resource state change. This function runs after the agent registers with the AMF kernel module. This function continuously waits for notification and takes action on the resource upon notification. |
netlsnr_imf_register | Registers or unregisters resource entities with the AMF kernel module. This function runs for each resource after the resource goes into steady state (online or offline). |
Clean | Scans the process table for tnslsnr $LISTENER and kills it. |
Action | Performs the predefined actions on a resource. |
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