diff --git a/src/main/java/com/profiler/ProductInfo.java b/src/main/java/com/profiler/ProductInfo.java
index 1ddb08da9..9707aca87 100644
--- a/src/main/java/com/profiler/ProductInfo.java
+++ b/src/main/java/com/profiler/ProductInfo.java
@@ -5,5 +5,5 @@ package com.profiler;
  */
 public final class ProductInfo {
     public static final String NAME = "pinpoint";
-    public static final String NAME_CAMEL = "PinPoint";
+    public static final String CAMEL_NAME = "PinPoint";
 }
diff --git a/src/main/java/com/profiler/bootstrap/TomcatBootStrap.java b/src/main/java/com/profiler/bootstrap/TomcatBootStrap.java
index de5ffb3ba..5bddd9ae1 100644
--- a/src/main/java/com/profiler/bootstrap/TomcatBootStrap.java
+++ b/src/main/java/com/profiler/bootstrap/TomcatBootStrap.java
@@ -2,8 +2,6 @@ package com.profiler.bootstrap;
 
 import com.profiler.ProductInfo;
 import com.profiler.config.ProfilerConfig;
-import com.profiler.logging.LoggerBinder;
-import com.profiler.logging.LoggerFactory;
 
 import java.lang.instrument.Instrumentation;
 import java.net.URL;
@@ -24,7 +22,7 @@ public class TomcatBootStrap {
 
     public static void premain(String agentArgs, Instrumentation instrumentation) {
         if (agentArgs != null) {
-            logger.info(ProductInfo.NAME_CAMEL + " agentArgs:" + agentArgs);
+            logger.info(ProductInfo.CAMEL_NAME + " agentArgs:" + agentArgs);
         }
         if (logger.isLoggable(Level.FINE)) {
             dumpSystemProperties();
@@ -59,7 +57,7 @@ public class TomcatBootStrap {
             agentClassLoader.boot(agentArgs, instrumentation, profilerConfig);
 
         } catch (Exception e) {
-            logger.log(Level.SEVERE, ProductInfo.NAME_CAMEL + " start fail. Caused:" + e.getMessage(), e);
+            logger.log(Level.SEVERE, ProductInfo.CAMEL_NAME + " start fail. Caused:" + e.getMessage(), e);
         }
 
     }
diff --git a/src/main/java/com/profiler/config/ProfilerConstant.java b/src/main/java/com/profiler/config/ProfilerConstant.java
index a92f5e451..39f0b8ee8 100644
--- a/src/main/java/com/profiler/config/ProfilerConstant.java
+++ b/src/main/java/com/profiler/config/ProfilerConstant.java
@@ -4,26 +4,22 @@ import java.text.DateFormat;
 import java.text.SimpleDateFormat;
 
 public class ProfilerConstant {
-	public final static DateFormat DATE_FORMAT_YMD_HMS = new SimpleDateFormat("yyyy_MM_dd_HH_mm_ss");
-	public final static DateFormat DATE_FORMAT_HMS_MS = new SimpleDateFormat("HH:mm:ss,SSS");
-	public static final long DATA_FETCH_INTERVAL = 2000;
 
 	public static final int DATA_TYPE_REQUEST = 1;
 	public static final int DATA_TYPE_RESPONSE = 2;
 	public static final int DATA_TYPE_UNCAUGHT_EXCEPTION = 11;
 
 
-	public static final String CLASS_NAME_REQUEST_THRIFT_DTO = "RequestThriftDTO";
+
 
 
 	public static final int REQ_DATA_TYPE_DB_GET_CONNECTION = 1;
 	public static final int REQ_DATA_TYPE_DB_CREATE_STATEMENT = 11;
-	public static final int REQ_DATA_TYPE_DB_GET_PREPARED_STATEMENT = 12;
+
 	public static final int REQ_DATA_TYPE_DB_QUERY = 21;
 	public static final int REQ_DATA_TYPE_DB_EXECUTE_QUERY = 31;
-	public static final int REQ_DATA_TYPE_DB_EXECUTE_UPDATE = 32;
 	public static final int REQ_DATA_TYPE_DB_FETCH = 41;
-	public static final int REQ_DATA_TYPE_DB_RESULTSET_CLOSE = 42;
+
 	public static final int REQ_DATA_TYPE_DB_PREPARED_STATEMENT_PARAM = 51;
 	public static final int REQ_DATA_TYPE_DB_CLOSE_CONNECTION = 99;
 }