TNS:lost contact during /tmp/create in step2 about oracle-12c HOT 11 OPEN

@linkcrux I just shutdown the database and listener and then executed “relink all”.

I have an extension of the docker image created by @wscherphof where I fix this problem. It could be useful if you want to use CDB/PDB feature as well. Have a look at https://github.com/nollymar/oracle-12c-cdb

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I get the same. Any progress?

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I had the same issue, which I was able to resolve by changing the kernel shared memory settings (in sysctl.conf):

kernel.shmall = 18446744073692774399
kernel.shmmax = 18446744073692774399

(Values depending on the amount of memory you have in the machine)

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Same here, +1

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I still get the same TNS:lost contact error even if i change the kernel memory settings.
After changing them and reloading them with sysctl --system, do you do anything else?
How do you restart the TNS Listener oracle service on this container ?

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@cosminj I solved the problem executing a relink all.

My problem was that these files were empty:
$ORACLE_HOME/bin/oracle
$ORACLE_HOME/rdbms/lib/config.o

Take a look at this page: https://oracledbamasters.wordpress.com/2014/02/25/ora-12547-tns-lost-contact/

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@blagerweij / @nollymar ,

Can you please list me the instructions how you could resolve it ?

1. I tried kernel settings inside the docker instance step2, before step2 #3 :

/tmp/create

No luck, I still get 'lost contact'

1. I tried 'relink all' (as my $ORACLE_HOME/bin/oracle is zero bytes), but it fails with error :

./relink: line 168: 66 Segmentation fault (core dumped) $ORACLE_HOME/perl/bin/perl $ORACLE_HOME/install/modmakedeps.pl $ORACLE_HOME $ORACLE_HOME/inventory/make/makeorder.xml > $CURR_MAKEORDER
writing relink log to: /u01/app/oracle/product/12.1.0/dbhome_1/install/relink.log

With below error in the log :

oracle.xml.parser.v2.XMLParseException: Start of root element expected.
at oracle.xml.parser.v2.XMLError.flushErrors1(XMLError.java:323)

Anything you can suggest ?

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@linkcrux

I have the same issue and it seems that its related to installing oracle on a Mac.

See here: https://forums.docker.com/t/perl-segmentation-fault-oracle-12c-install-docker-mac-mac-pro/18256

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@linkcrux, did you solve the problem?

@pointerxr, for the installation I used a Mac and could solve the problem as recommended above.

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Guy's, I had this problem last year. I solved it by downgrading my VM to Ubuntu 14.04 and then building the image in it. This was tried twice, hope this helps.

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@nollymar your repo is the one I had real success creating oracle 12c docker container. Thank you for the PDB, am trying out different options that fit my project. Will message you in case I run into issues.

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