Cannot communicate with crsd

In Oracle RAC databases, for cluster operations, errors can be received because the crsd process is stopped or suspended. In this case, it should check the crsd process, then kill and start it again.

If crs is not running, it will be necessary to start crs. (crsctl start crs)

For example, when you check the scan listener status, the following error will be taken.

First, check whether the crsd process is started. If you have only “grep crs” as follows, it is probably stopped.

If the crs service is still running, process id information should be detected and terminated with “kill -9”.

Then we can start as follows.

The results should be similar to the following when we check.

With the following command, ensure that the cluster resources that must be ONLINE are ONLINE.