Several articles in Hot Topics e-mails drew my attention today:
10.2.0.5.5 Grid Control Patch Set Update (PSU) [ID 1335690.1]
good to know that PSU5 as well as PSU4 are OMS pathes only.
"hcheck.sql" script to check for known problems in Oracle8i, Oracle9i, Oracle10g and Oracle 11g [ID 136697.1]
script creates a package under SYS schema that checks data dictionary for common dictionary problems.
Master Note For Oracle Database Server Installation [ID 1156586.1]
it is helpful that the document has links to silent installation notes as well.
11g Grid Control: Overview of the EMCTL Options Available for Managing the OMS [ID 1188803.1] that article might be valuable for those who spends lots of time managing Grid Control.
Have a good day!