flink-doris-connector/src/main/java/org/apache/doris/flink/tools/cdc/mysql/MysqlDatabaseSync.java [69:82]:
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    public void registerDriver() throws SQLException {
        try {
            Class.forName("com.mysql.cj.jdbc.Driver");
        } catch (ClassNotFoundException ex) {
            LOG.warn(
                    "can not found class com.mysql.cj.jdbc.Driver, use class com.mysql.jdbc.Driver");
            try {
                Class.forName("com.mysql.jdbc.Driver");
            } catch (Exception e) {
                throw new SQLException(
                        "No suitable driver found, can not found class com.mysql.cj.jdbc.Driver and com.mysql.jdbc.Driver");
            }
        }
    }
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flink-doris-connector/src/main/java/org/apache/doris/flink/tools/cdc/oracle/OracleDatabaseSync.java [75:88]:
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    public void registerDriver() throws SQLException {
        try {
            Class.forName("oracle.jdbc.driver.OracleDriver");
        } catch (ClassNotFoundException ex) {
            LOG.warn(
                    "can not found class oracle.jdbc.driver.OracleDriver, use class oracle.jdbc.OracleDriver");
            try {
                Class.forName("oracle.jdbc.OracleDriver");
            } catch (Exception e) {
                throw new SQLException(
                        "No suitable driver found, can not found class oracle.jdbc.driver.OracleDriver and oracle.jdbc.OracleDriver");
            }
        }
    }
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