Oracle RAC Alerts Test

How often should the test be executed

The host for which the test is to be configured.

The port on which the server is listening.

A ServiceName exists for the entire Oracle RAC system. When clients connect to an Oracle cluster using the ServiceName, then the cluster routes the request to any available database instance in the cluster. By default, the Service Name is set to none. In this case, the test connects to the cluster using the ORASID and pulls out the metrics from that database instance which corresponds to that ORASID. If a valid service name is specified instead, then, the test will connect to the cluster using that Service Name, and will be able to pull out metrics from any available database instance in the cluster.

To know the Service Name of a cluster, execute the following query on any node in the target cluster:

select name, value from v$parameter where name =’service_names’

The variable name of the oracle instance.

In order to monitor an Oracle database server, a special database user account has to be created in every Oracle database instance that requires monitoring. A Click here hyperlink is available in the test configuration page, using which a new oracle database user can be created. Alternatively, you can manually create the special database user. When doing so, ensure that this user is vested with the select_catalog_role and create session privileges.

The sample script we recommend for user creation (in Oracle database server versions before 12c) for eG monitoring is:

create user oraeg identified by oraeg

create role oratest;

grant create session to oratest;

grant select_catalog_role to oratest;

grant select any dictionary to oratest;

grant oratest to oraeg;

The sample script we recommend for user creation (in Oracle database server 12c) for eG monitoring is:

alter session set container=<Oracle_service_name>;

create user <user_name>identified by <user_password> container=current default tablespace <name_of_default_tablespace> temporary tablespace <name_of_temporary_tablespace>;

Grant create session to <user_name>;                                

Grant select_catalog_role to <user_name>;

Grant select any dictionary to <user_name>;

The name of this user has to be specified here.

Specify the password of the specified database user.

Confirm the Password by retyping it here.

Enter the specific patterns of alerts to be monitored. The pattern should be in the following format: <PatternName>:<Pattern>, where <PatternName> is the pattern name that will be displayed in the monitor interface and <Pattern> is an expression of the form - expr or expr or expr or expr, etc. A leading ‘*’ signifies any number of leading characters, while a trailing ‘*’ signifies any number of trailing characters.  

For example, say you specify ORA:ORA-* in the Search Pattern text box. This indicates that “ORA” is the pattern name to be displayed in the monitor interface. “ORA-*” indicates that the test will monitor only those lines in the alert log which start with the term “ORA-“. Similarly, if your pattern specification reads: offline:*offline, then it means that the pattern name is offline and that the test will monitor those lines in the alert log which end with the term offline.

Multiple search patterns can be specified as a comma-separated list. For example: ORA:ORA-*,offline:*offline*,online:*online.

Specify all if all Oracle alerts are to be monitored.

Provide a comma-separated list of message patterns to be excluded from monitoring. For instance, if you want to monitor all alert messages that begin with “ORA-“, except the messages that begin with    “ORA—“ and “ORA-info”, you can configure ORA-* as the Search Pattern and configure ORA--,ORA-info as the Exclude Pattern.

By default, this flag is set to Yes, as the target Oracle cluster is SSL-enabled by default. If the target cluster is not SSL-enabled, then set this flag to No.

This parameter is applicable only if the target Oracle Cluster is SSL-enabled, if not, set this parameter to none. TrustStore is used to store certificates from Certified Authorities (CA) that verify and authenticate the certificate presented by the server in an SSL connection. Therefore, the eG agent should have access to the truststore where the certificates are stored to authenticate and connect with the target cluster and collect metrics. For this, provide the full path to this file in this text box. By default, the location of this file is: <eG_INSTALL_DIR>/lib/security/cacerts. To know how to import the certificate into the truststore, refer toPre-requisites for monitoring Oracle Cluster.

Specify the type of truststore that contains the certificates for server authentication in this text box. By default, this parameter is set to the value JKS, which implies that the Java Truststore is by default used for storing the certificates. If the certificates in your environment are contained within a different type of truststore, then specify the exact type here - eg., PKCS12.

If a Truststore File path is provided, then, in this text box, provide the password that is used to obtain the associated certificate details from the Truststore File. If none is specified against Truststore Path, then, set this parameter to none.