The right pane of the *pgAdmin* window features a collection of tabs that display information about the object currently selected in the *pgAdmin* tree control in the left window. Select a tab to access information about the highlighted object in the tree control.
* The *Server sessions* or *Database sessions* graph displays the interactions with the server or database.
* The *Transactions per second* graph displays the commits, rollbacks, and total transactions per second that are taking place on the server or database.
* The *Tuples out* graph displays the number of tuples fetched and returned from the server or database.
* The *Block I/O* graph displays the number of blocks read from the filesystem or fetched from the buffer cache (but not the operating system's file system cache) for the server or database.
The *Server activity* panel displays information about sessions, locks, prepared transactions, and server configuration (if applicable). The information is presented in context-sensitive tables. Use controls located above the table to:
* Click the *Refresh* button to update the information displayed in each table.
* Enter a value in the *Search* box to restrict the table content to one or more sessions that satisfy the search criteria. For example, you can enter a process ID to locate a specific session, or a session state (such as *idle*) to locate all of the sessions that are in an idle state.
* Use the *Terminate* icon (located in the first column) to stop a session and remove the session from the table. Before the server terminates the session, you will be prompted to confirm your selection.
* Use the *Cancel* icon (located in the second column) to terminate an active query without closing the session. Before canceling the query, the server will prompt you to confirm your selection. When you cancel a query, the value displayed in the *State* column of the table will be updated from *Active* to *Idle*. The session will remain in the table until the session is terminated.
The *Properties* tab displays information about the object selected. Click the *Edit* icon in the toolbar under the browser tabs to launch the *Properties* dialog for the selected object.
Details about the object highlighted in the tree control are displayed in one or more collapsible panels. You can use the arrow to the left of each panel label to open or close a panel.
The *SQL* tab displays the SQL script that created the highlighted object, and when applicable, a (commented out) SQL statement that will *DROP* the selected object. You can copy the SQL statements to the editor of your choice using cut and paste shortcuts.
The *Statistics* tab displays the statistics gathered for each object on the tree control; the statistics displayed in the table vary by the type of object that is selected. Click a column heading to sort the table by the data displayed in the column; click again to reverse the sort order. The following table lists some of the statistics that are available:
The *Dependencies* tab displays the objects on which the currently selected object depends. If a dependency is dropped, the object currently selected in the pgAdmin tree control will be affected. To ensure the integrity of the entire database structure, the database server makes sure that you do not accidentally drop objects that other objects depend on; you must use the DROP CASCADE command to remove an object with a dependency.
The *Dependencies* table displays the following information:
* The *Type* field specifies the parent object type.
* The *Name* field specifies the identifying name of the parent object.
* The *Restriction* field describes the dependency relationship between the currently selected object and the parent.
* If the field is *auto*, the selected object can be dropped separately from the parent object, and will be dropped if the parent object is dropped.
* If the field is *internal*, the selected object was created during the creation of the parent object, and will be dropped if the parent object is dropped.
* If the field is *normal*, the selected object can be dropped without dropping the parent object.
* If the field is *blank*, the selected object is required by the system, and cannot be dropped.
The *Dependents* tab displays a table of objects that depend on the object currently selected in the *pgAdmin* browser. A dependent object can be dropped without affecting the object currently selected in the *pgAdmin* tree control.
* The *Type* field specifies the dependent object type.
* The *Name* field specifies the identifying name for the dependent object.
* The *Database* field specifies the database in which the object resides.
Additional tabs open when you access the extended functionality offered by pgAdmin tools (such as the Query tool, Debugger, or SQL editor). Use the close icon (X) located in the upper-right corner of each tab to close the tab when you are finished using the tool. Like permanent tabs, these tabs may be repositioned in the pgAdmin client window.
By default, each time you open a tool, pgAdmin will open a new browser tab. You can control this behavior by modifying the *Display* node of the *Preferences* dialog for each tool. To open the *Preferences* dialog, select *Preferences* from the *File* menu.
