Oracle Long Running Queries Test
This test tracks the currently executing queries on an Oracle database server and determines the number of queries that have been running for a long time.
This test is disabled by default. To enable the test, go to the enable / disable tests page using the menu sequence : Agents -> Tests -> Enable/Disable, pick Oracle Database as the Component type, Performance as the Test type, choose this test from the disabled tests list, and click on the << button to move the test to the ENABLED TESTS list. Finally, click the Update button.
Note:
This test is applicable only for PDB (Pluggable Database) configuration of an Oracle Database with Multi-tenant support.
Target of the test : An Oracle server
Agent deploying the test : An internal agent
Outputs of the test : One set of results for every instance of an Oracle database.
| Parameter | Description |
|---|---|
|
Test period |
How often should the test be executed |
|
Host |
The host for which the test is to be configured. |
|
Port |
The port on which the server is listening. |
|
Username |
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 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>; The name of this user has to be specified here. |
|
Password |
Specify the password of the specified database user. |
|
Confirm Password |
Confirm the Password by retyping it here. |
|
IsPassive |
If the value chosen is Yes, then the Oracle server under consideration is a passive server in an Oracle cluster. No alerts will be generated if the server is not running. Measures will be reported as “Not applicable" by the agent if the server is not up. |
|
Elapsed Time |
In the Elapsed Time text box, specify the duration (in seconds) for which a query should have executed for it to be regarded as a long running query. The default value is 10. |
|
Exclude Command |
Specify the command you want to exclude from the list of long running queries. For example “backup” queries are included in the long-running queries list, they will be automatically excluded based on this parameter. As a result, only balance queries will be displayed in the UI. By default, this parameter set to “NONE”. |
|
Exclude User |
Specify the user you want to exclude from the list of long running queries. By default, this parameter is set to "none". However, you have the option to configure this parameter if they want to exclude specific users. |
|
Display Query Full Text |
The detailed diagnosis of this test lists the queries that have been running for a long time. In the Detailed Diagnosis page by default, query strings that are very long are truncated to display the first 1000 characters of the query alone. This is why, the Display Query Full Text flag is set to No by default. To view the full query in the detailed diagnosis page, set this flag to Yes. Note that setting this flag to ‘Yes’ may increase the size of your eG database. |
|
SSL |
By default, this flag is set to No, as the target Oracle database is not SSL-enabled by default. If the target database is SSL-enabled, then set this flag to Yes. |
|
SSL Cipher |
This parameter is applicable only if the target Oracle database is SSL-enabled, if not, set this parameter to none. A cipher suite is a set of cryptographic algorithms that are used before a client application and server exchange information over an SSL/TLS connection. It consist of sets of instructions on how to secure a network through SSL (Secure Sockets Layer) or TLS (Transport Layer Security). In this text box, provide a comma-seperated list of cipher suites that are allowed for SSL/TLS connection to the target database. By default, this parameter is set to none. |
|
Truststore File |
This parameter is applicable only if the target Oracle database 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 database and collect metrics. For this, first import the certificates into the following default location <eG_INSTALL_DIR>/lib/security/mytruststore.jks. To know how to import the certificate into the truststore, refer toPre-requisites for monitoring Oracle Cluster. Then, provide the truststore file name in this text box. For example: mytruststore.jks. By default, none is specified against this text box. |
|
Truststore Type |
This parameter is applicable only if the target Oracle database is SSL-enabled, if not, set this parameter to none.Specify the type of truststore that contains the certificates for server authentication in this text box. For eg.,JKS. By default, this parameter is set to the value none. |
|
Truststore Password |
This parameter is applicable only if the target Oracle database is SSL-enabled, if not, set this parameter to none. If a Truststore File name is provided, then, in this text box, provide the password that is used to obtain the associated certificate details from the Truststore File. By default, this parameter is set to none. |
|
Keystore File |
This parameter is applicable only if the target Oracle database is SSL-enabled, if not, set this parameter to none. Keystore contains the private keys for the certificates that the client can provide to the server upon request. eG agent requires access to the keystore where client certificate is stored to send that to the server so that the server validates the certificate against the one contained in its trustore. For this purpose, first create the client certificate in the following default location /opt/egurkha/jre/lib/security/egmqsslstore.jks. |
|
Keystore Password |
This parameter is applicable only if the target Oracle database is SSL-enabled, if not, set this parameter to none. If a Keystore File name or file path is provided, then, in this text box, provide the password that is used to obtain the associated certificate details from the Keystore File. |
|
Confirm Password |
Confirm the Password for Keystore by retyping it here. |
|
DD Frequency |
Refers to the frequency with which detailed diagnosis measures are to be generated for this test. The default is 1:1. This indicates that, by default, detailed measures will be generated every time this test runs, and also every time the test detects a problem. You can modify this frequency, if you so desire. Also, if you intend to disable the detailed diagnosis capability for this test, you can do so by specifying none against DD frequency. |
|
Detailed Diagnosis |
To make diagnosis more efficient and accurate, the eG Enterprise embeds an optional detailed diagnostic capability. With this capability, the eG agents can be configured to run detailed, more elaborate tests as and when specific problems are detected. To enable the detailed diagnosis capability of this test for a particular server, choose the On option. To disable the capability, click on the Off option. The option to selectively enable/disable the detailed diagnosis capability will be available only if the following conditions are fulfilled:
|
| Measurement | Description | Measurement Unit | Interpretation |
|---|---|---|---|
|
Long running queries |
Indicates the number of queries currently executing on the database server that have been running for more time than the configured ELAPSED TIME. |
Number |
The detailed diagnosis for this measure indicates the exact queries and which user is executing the queries. This information can be very useful in identifying queries that may be candidates for optimization. |