The Cluster Manager in the Administration Tool was used in previous releases to monitor and manage Oracle BI Server, Oracle BI Scheduler, and Cluster Controller instances.
The Cluster Manager is still supported in the current release.
Although you use Fusion Middleware Control for most administrative tasks that relate to clustered components, the Cluster Manager provides a useful way to view the state of clustered components. For example, you can view the currently active Oracle BI Scheduler instance and see which Oracle BI Server is the Master BI Server. Fusion Middleware Control shows the current status of clustered components, but does not provide a way to view the current state.
The Cluster Manager lets you monitor, analyze, and manage the operations of Oracle BI Server, Oracle BI Scheduler, and Cluster Controller instances in a cluster. It provides status, cache, and session information. The Cluster Manager is available only when the Administration Tool is connected to a clustered DSN.
If all Cluster Controllers or Oracle BI Servers in the cluster are currently stopped or offline, then you cannot access the Cluster Manager to start them. You must manually start one Cluster Controller (generally, the primary) and one Oracle BI Server.
The Cluster Manager window has two panes: the Explorer pane on the left side and the Information pane on the right side. The Explorer pane displays hierarchical information about the servers, schedulers, and controllers that comprise a cluster. The Information pane shows detailed information about an item selected in the Explorer pane.
The Cluster Manager window refreshes every minute by default. You can change the interval.
In the Administration Tool, open a repository in online mode.
Select Manage, then Clusters.
Select Refresh, then Every, and select another value from the list.
To refresh the display at any time, ensure that the Cluster Manager is the active window and press F5, or select Refresh, then Now. This action retrieves the most current information for the cluster.
Cluster information provides an insight into the application.
The section describes how to view status, cache, and session information about a cluster and the meaning of the information provided.
The Status view is automatically displayed when you first open the Cluster Manager window.
You can also access the Status view by selecting View, then Status in the Cluster Manager window.
The categories of information that are displayed in the Information pane might vary depending on the server to which the Administration Tool is connected. The following table describes categories that might appear.
Column | Description |
---|---|
Last Reported Time |
The time that the Cluster Controller or Oracle BI Server communicated with the Controlling Cluster Controller. If the server or controller is offline, then this field might be blank. |
Name |
The name of the computer that is hosting the Oracle BI Server or Cluster Controller. |
Role |
The role of the object in the cluster:
|
Sessions |
This field is available when either Servers or an individual server is selected in the Explorer pane. It shows the number of sessions that are currently logged on to a clustered server. |
Start Time |
The timestamp showing when the Cluster Controller or Oracle BI Server was last started. This field is blank if the Cluster Controller or clustered server is offline. |
Status |
The status of the object in the cluster:
|
Type |
When Clusters is selected in the Explorer pane, this field is available. There are three types:
|
The Cache view is available in the Cluster Manager window if caching is enabled.
The categories of information and their display sequence are controlled by the Options settings. The table below describes categories that might appear.
Column | Description |
---|---|
Business Model |
Name of the business model that is associated with the cache entry. |
Column count |
Number of columns in each row of this cache entry's result set. |
Created |
Time the result set of the cache entry was created. |
Creation elapsed time |
Time, in milliseconds, needed to create the result set for this cache entry. |
Full size |
Full size is the maximum size used, considering variable length columns, compression algorithm, and other factors. The actual size of the result set is smaller than Full size. |
Last used |
Last time the result set of the cache entry satisfied a query. (After an unexpected shutdown of an Oracle BI Server, the Last used time might temporarily have a stale value, that is, older than the true value.) |
Row count |
Number of rows that are generated by the query. |
Row size |
Size of each row (in bytes) in this cache entry's result set. |
SQL |
Text of the SQL statement that generated the cache entry. |
Use count |
Number of times that this cache entry's result set has satisfied a query (since Oracle BI Server startup). |
User |
Name of the user who submitted the query that resulted in the cache entry. |
To view cache information:
Click an individual server in the Explorer pane, and then select View, then Cache.
You can review Session information in two places.
The Session view is available for Oracle BI Servers. The information is arranged in two windows, described in the next table.
Session window: Appears on the top. Shows users currently logged on to the Oracle BI Server.
Request window: Appears on the bottom. Shows active query requests for the user selected in the Session window.
The following table describes the information that is displayed in the Session window.
Column | Description |
---|---|
Catalog |
Name of the Presentation Catalog to which the session is connected. |
Client Type |
Type of client session. The client type of Administration is reserved for the user who is logged in with the Administrator user ID. |
Last Active Time |
Timestamp of the last activity on the session or the query. |
Logon Time |
Timestamp when the session logged on to the Oracle BI Server. |
Repository |
Logical name of the repository to which the session is connected. |
Session ID |
Unique internal identifier that the Oracle BI Server assigns each session when the session is initiated. |
User |
Name of the user connected. |
The following table describes the information that is displayed in the Request window.
Column | Description |
---|---|
Last Active Time |
Timestamp of the last activity on the session or the query. |
Request ID |
Unique internal identifier that the Oracle BI Server assigns each query when the query is initiated. |
Session ID |
Unique internal identifier that the Oracle BI Server assigns each session when the session is initiated. |
Start Time |
Time of the initial query request. |
Status |
These are the possible values. Due to the speed at which some processes complete, not all values for any given request or session might appear.
|
To view session information:
Select a server in the Explorer pane, and select View, then Sessions.
Session information for the server is displayed in the Information pane. It shows all users logged into the server and all current query requests for each user.
To disconnect a session:
In the Session view, right-click the session in the Session window (top window) and click Disconnect.
When you disconnect a session, the ODBC session is terminated. Users who were connected during this session receive error messages if they attempt to run queries. Users must log out, then log back in again to start a new session.
To terminate a query request:
In the Session view, right-click the request in the Request window (bottom window) and click Kill Request.
When you terminate a query request, the user who is initiating the query receives an error.