Unable to run cloudera manager

This could the possible solution, Please share the CM server logs
1) log into CM server host and take a backup file of /etc/default/cloudera-scm-server to a backup location
2) Open /etc/default/cloudera-scm-server file and add the following to the CMF_JAVA_OPTS:
-Dlog4j.configurationFile=file:/etc/cloudera-scm-server/log4j2.properties

With the above configuration, the file looks like this:
[...]
export CMF_JAVA_OPTS="[...existing...javaoptions] -Dlog4j.configurationFile=file:/etc/cloudera-scm-server/log4j2.properties"
[...]

3) Create the /etc/cloudera-scm-server/log4j2.properties file.

#chmod 644 /etc/cloudera-scm-server/log4j2.properties

4) We noticed some issues with the ODBC connector:

#ls -ltr /usr/share/java/mysql-connector-java.jar
*Not existing file

6) We copied the ODBC from a different environment. Cloudera Manager is able to start, but it is failing to connect to DB, We granted more connections in the db.properties file:
#vi /etc/cloudera-scm-server/db.properties and add the below line in this file:

> com.cloudera.cmf.orm.hibernate.c3p0.max_statements=0 <

7) After the restart, the CM server started successfully

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