Codepage {0} message on tomcat catalina.out log file is due to encoding issue.
Siebel Error message usually appears like below
<ErrMsg>Codepage {0} is not supported.(SBL-JCA-00328)</ErrMsg>
Solution:
Step 1: export JAVA_OPTS to environment variable. (see below)
export JAVA_OPTS="-Dfile.encoding=UTF-8"
Step 2: Restart Server (Application container)
