EM13C添加agent记录两个报错，
错误一：
ADF_FACES-60097:For more information, please see the server's error log for an entry beginning with: ADF_FACES-60096:Server Exception during PPR, #2
解决:
Solution
In order to force back Utopia as the default Java font:
1. Create a file named 'local.conf' in '/etc/fonts/' with contents as follows:
<?xml version='1.0'?>
<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
<fontconfig>
<alias>
<family>serif</family>
<prefer><family>Utopia</family></prefer>
</alias>
<alias>
<family>sans-serif</family>
<prefer><family>Utopia</family></prefer>
</alias>
<alias>
<family>monospace</family>
<prefer><family>Utopia</family></prefer>
</alias>
<alias>
<family>dialog</family>
<prefer><family>Utopia</family></prefer>
</alias>
<alias>
<family>dialoginput</family>
<prefer><family>Utopia</family></prefer>
</alias>
</fontconfig>
2. Reboot the machine.
Now the EM Navigation should work without any ADF errors.
错误二：
ORA-20206: Target does not exist
解决:
Solution
In case either of the queries provided above report zero count, then the associated plugins will need to be re-deployed
Steps:
1) Undeploy Oracle Virtualization (oracle.sysman.vt) plugin on all agents from EM console or using EMCLI utility.
2) Undeploy Oracle Cloud Application (oracle.sysman.ssa) plugin on OMS from EM console or using EMCLI utility, because this plugin on Oracle Virtualization plugin.
3) Undeploy Oracle Virtualization (oracle.sysman.vt) plugin on OMS from EM console or using EMCLI utility.
4) Deploy Oracle Virtualization (oracle.sysman.vt) plugin OMS from EM console or using EMCLI utility.
5) Deploy Oracle Cloud Application (oracle.sysman.ssa) plugin on OMS from EM console or using EMCLI utility.
6) Now connect to Repository database and execute the below as SYSMAN user, both the below queries should report the count value as 1.
SQL> select count(*) from mgmt_targets where target_type='oracle_vm_cloud';
SQL> select count(*) from mgmt_target_types where target_type='oracle_vm_cloud';
7) Now deploy Oracle Virtualization (VT) plugin on respective agent and register OVM manager using that agent
For information on the undeploying or deploying of plugins, please refer to the note mentioned below.
EM 13c, 12c: Enterprise Manager Cloud Control Plug-ins Frequently Asked Questions (Doc ID 1394908.1)