logs head
su oracle -c /u01/app/oracle/product/11.2.0/EE/bin/dbca -silent -createDatabase -templateName General_Purpose.dbc -gdbname EE.oracle.docker -sid EE -responseFile NO_VALUE -characterSet AL32UTF8 -totalMemory 4096 -emConfiguration LOCAL -dbsnmpPassword oracle -sysPassword oracle -systemPassword oracle

Preparing oracle installer.
Running root scripts.
Changing permissions of /u01/app/oraInventory.
Adding read,write permissions for group.
Removing read,write,execute permissions for world.

Changing groupname of /u01/app/oraInventory to dba.
The execution of the script is complete.
Check /u01/app/oracle/product/11.2.0/EE/install/root_716fe72deee2_2018-03-12_04-09-55.log for the output of root script


first run, createDatabase
ls: cannot access /u01/app/oracle/oradata: No such file or directory
Database not initialized. Initializing database.
Starting tnslsnr
Running initialization by dbca
/bin/cat: /proc/sys/net/core/wmem_default: No such file or directory
/bin/cat: /proc/sys/net/core/wmem_default: No such file or directory
/bin/cat: /proc/sys/net/core/wmem_default: No such file or directory

/u01/app/oracle/cfgtoollogs/dbca/silent.log

Copying database files
1% complete
3% complete
37% complete
Creating and starting Oracle instance
40% complete
45% complete
50% complete
55% complete
56% complete
60% complete
62% complete
Completing Database Creation
66% complete
70% complete
73% complete
85% complete
96% complete
100% complete
Look at the log file "/u01/app/oracle/cfgtoollogs/dbca/EE/EE.log" for further details.
Starting web management console

PL/SQL procedure successfully completed.

Starting import from '/docker-entrypoint-initdb.d':
found file /docker-entrypoint-initdb.d//docker-entrypoint-initdb.d/*
[IMPORT] /entrypoint.sh: ignoring /docker-entrypoint-initdb.d/*

Import finished

Database ready to use. Enjoy! ;)


second, third, ... runs
found files in /u01/app/oracle/oradata Using them instead of initial database
ORACLE instance started.

Total System Global Area 1603411968 bytes
Fixed Size		    2213776 bytes
Variable Size		  402655344 bytes
Database Buffers	 1191182336 bytes
Redo Buffers		    7360512 bytes
Database mounted.
Database opened.
Starting web management console

PL/SQL procedure successfully completed.

[IMPORT] Not a first start, SKIPPING Import from Volume '/docker-entrypoint-initdb.d'
[IMPORT] If you want to enable import at any state - add 'IMPORT_FROM_VOLUME=true' variable

Database ready to use. Enjoy! ;)