During the installation of Oracle 126.96.36.199 on Enterprise Linux 7.2, I met this error about ins_emagent.mk below:
In the installation log, we saw a piece of message:
[oracle@test ~]$ vi /u01/app/oraInventory/logs/installActions2016-10-21_05-03-41PM.log
INFO: Exception thrown from action: make
Exception Name: MakefileException
Exception String: Error in invoking target 'agent nmhs' of makefile '/u01/app/oracle/product/11.2.0/dbhome_1/sysman/lib/ins_emagent.mk'. See '/u01/app/oraInventory/logs/installActions2016-10-21_05-03-41PM.log' for details.
Exception Severity: 1
Don't click Abort or Continue, you may find a solution in this post.
By following the error message, you can find the target file that caused this error:
[oracle@test ~]$ ls -l $ORACLE_HOME/sysman/lib/ins_emagent.mk
-rw-r--r--. 1 oracle oinstall 5480 Jul 16 2013 /u01/app/oracle/product/11.2.0/dbhome_1/sysman/lib/ins_emagent.mk
Now, please edit the file, it's around line #176, you should add an option -lnnz11 to this command:
Don't type the option by you own hands, it's error-prone. Just copy it and paste into your file.
[oracle@test ~]$ vi /u01/app/oracle/product/11.2.0/dbhome_1/sysman/lib/ins_emagent.mk
177 $(MK_EMAGENT_NMECTL) -lnnz11
In the above, I commented out the original line 176 and add a line underneath. Just like I said, I added an option to it. After that, you can save the file, and then click Retry, it will solve the problem this time.
If there's any doubt about Oracle 11g installation on Enterprise Linux 7.2, you may refer to this post: How to Install Oracle Database 188.8.131.52 on Oracle Linux 7.2