ZestSync

Instead of using /opt/oracle as the "oracle" user home, I used /home/oracle

I did not install the libstdc++5 in 32 bit version

I did everything else the same as the posting

Installation resulted in "missing packages". I tried to do an apt-get install for these packages from ubuntu, but ubuntu says that they don't exist. Then I saw in the instructions:

Once you will reach the "pre-reqs" screen, check "Ignore all" to continue the installation.

When running ./dbca from $ORACLE_HOME/bin, it fails with ORA-12547.

I checked $ORACLE_HOME/network/admin and listener.ora , sqlnet.ora , and tnsnames.ora all look OK.

However, I think that tnsnames.ora is not being read properly, because ./tnsping fails and the error message states that "EZ Connect" was used. But in my sqlnet.ora , I have

names.directory_lookup = (TNSNAMES,EZCONNECT) 

It should use EZ Connect only after tnsnames is tried.

Also, I sometimes get ORA-12541: No listener. I tried running ./netca. Everything is OK until I perform a test on the listener, and it fails.

I can't run ./lsnrctl. Absolutely nothing happens for this, as well as lsnrctl start, stop, status.

I can't go through sqlplus. If I run ./sqlplus , it asks me for username/password directly.

If I do ./sqlplus / as sysdba, then this results in "ORA-12547: TNS lost contact".

All environment variables are set correctly in .bashrc.

I tried re-running root.sh , but the problem is not fixed.

/etc/oratab is OK

/etc/hosts is OK, but I can't always ping the "localhost" or "127.0.0.1", or "ubuntu" or "127.0.1.1"

The same TNS or Listener errors display.

When I login in oracle (sqlplus system/pass as sysdba), I got this:

ERROR:

ORA-12547: TNS :lost contact when try to connect to Oracle.

First, I think the server is down, but I check it, it is OK. And so many body say 'chmod 6751 oracle', I did it, but I got another error:

ERROR:

ORA-01031: insufficient privileges

Enter user-name:

finally, I switch the system user from root to oracle. And I login success.