Prevent special chars in generated passwords (#516)

For the Oracle Database 23ai Free project, change the method used by
install.sh to auto-generate passwords from openssl rand -base64 to
openssl rand -hex. This prevents including special characters in
the generated password that would cause database creation to fail.

(Also, change the openssl rand "num" parameter from 9 to 8, to be
consistent with the other single-instance database projects in this
repository.)

Fixes #515

Signed-off-by: Paul Neumann <[email protected]>

Author: PaulNeumann

OracleDatabase/23.4.0-Free/scripts/install.sh

@@ -65,7 +65,7 @@ fi
 echo 'INSTALLER: Oracle software installed'
 
 # Auto generate ORACLE PWD if not passed in
-export ORACLE_PWD=${ORACLE_PWD:-"$(openssl rand -base64 9)1"}
+export ORACLE_PWD=${ORACLE_PWD:-"$(openssl rand -hex 8)1"}
 
 # Create database
 cfg_file='/etc/sysconfig/oracle-free-23ai.conf'