Oracle JDBC connection error

Hello facing below error with Oracle connection, it successfully connects some times but fails most of the time with this error:

liquibase.exception.DatabaseException: liquibase.exception.DatabaseException: Connection could not be created to jdbc:oracle:thin:@************; with driver oracle.jdbc.OracleDriver. IO Error: JNDI Package failure javax.naming.NameNotFoundException: [LDAP: error code 32 - No Such Object];

Currently using version 4.3.1 , since it is the approved version for us at this time.