Management of the OMS and Repository - Expert Oracle Enterprise Manager 12c - page 73

Figure 3-9. The Agent browser
Many of the emctl commands described in the upcoming section “The EMCTL Utility” are available via this
browser interface as well. One of the more interesting ones is the command to take a system state dump for the agent,
which can be particularly useful in debugging the status of a problematic agent. To take a system state dump, you
simply click the link System State Dumps, as shown in Figure 3-9 , and then click Perform System Dump in the window
that opens. Be aware that this may take some time to generate, and it also generates quite a large XML file, which for
space reasons is not shown here.
Agent Management with the Command Line
Of course, all the areas you just looked at are available from the command line as well. Enterprise Manager has two
command-line interfaces: EMCTL and EMCLI. Let's look at each in turn.
The EMCTL Utility
The Enterprise Manager Control utility (EMCTL) is mainly used—surprise, surprise!—for control of the different
parts of the EM infrastructure. Because this section is about the management agent, discussion is restricted here to
functions used with the agent. You'll need to ensure that you're using EMCTL from the agent home page to use these
commands. Use emctl getemhome to validate this, because it can be easy to get confused about which emctl you
are using!
Many of the emctl commands remain unchanged from previous releases. Just for completeness, though,
Table 3-1 shows a list of the more frequently used emctl commands for management agents.