diff --git a/RELEASE.md b/RELEASE.md
index 44700488..fd6cc0b8 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -1,4 +1,7 @@
 # Release Notes
+## [4.5.1] - 2024-10-11
+- Made CDM generated SCB unique & much short-lived when using the TLS option to connect to Astra more securely.
+
 ## [4.5.0] - 2024-10-03
 - Upgraded to use log4j 2.x and included a template properties file that will help separate general logs from CDM class specific logs including a separate log for rows identified by `DiffData` (Validation) errors.
 - Upgraded to use Spark `3.5.3`.
diff --git a/src/main/java/com/datastax/cdm/data/DataUtility.java b/src/main/java/com/datastax/cdm/data/DataUtility.java
index 76d6d003..2df21b7a 100644
--- a/src/main/java/com/datastax/cdm/data/DataUtility.java
+++ b/src/main/java/com/datastax/cdm/data/DataUtility.java
@@ -31,7 +31,8 @@
 import com.datastax.cdm.schema.CqlTable;
 
 public class DataUtility {
-    public static final Logger logger = LoggerFactory.getLogger(CqlConversion.class);
+    public static final Logger logger = LoggerFactory.getLogger(DataUtility.class.getName());
+
     protected static final String SCB_FILE_NAME = "_temp_cdm_scb_do_not_touch.zip";
 
     public static boolean diff(Object obj1, Object obj2) {
@@ -151,19 +152,19 @@ public static String getMyClassMethodLine(Exception e) {
         return "Unknown";
     }
 
-    public static void deleteGeneratedSCB() {
-        File file = new File(PKFactory.Side.ORIGIN + SCB_FILE_NAME);
+    public static void deleteGeneratedSCB(long runId) {
+        File file = new File(PKFactory.Side.ORIGIN + "_" + Long.toString(runId) + SCB_FILE_NAME);
         if (file.exists()) {
             file.delete();
         }
-        file = new File(PKFactory.Side.TARGET + SCB_FILE_NAME);
+        file = new File(PKFactory.Side.TARGET + "_" + Long.toString(runId) + SCB_FILE_NAME);
         if (file.exists()) {
             file.delete();
         }
     }
 
     public static File generateSCB(String host, String port, String trustStorePassword, String trustStorePath,
-            String keyStorePassword, String keyStorePath, PKFactory.Side side) throws IOException {
+            String keyStorePassword, String keyStorePath, PKFactory.Side side, long runId) throws IOException {
         FileOutputStream fileOutputStream = new FileOutputStream("config.json");
         String scbJson = new StringBuilder("{\"host\": \"").append(host).append("\", \"port\": ").append(port)
                 .append(", \"keyStoreLocation\": \"./identity.jks\", \"keyStorePassword\": \"").append(keyStorePassword)
@@ -175,7 +176,8 @@ public static File generateSCB(String host, String port, String trustStorePasswo
         FilePathAndNewName configFileWithName = new FilePathAndNewName(configFile, "config.json");
         FilePathAndNewName keyFileWithName = new FilePathAndNewName(new File(keyStorePath), "identity.jks");
         FilePathAndNewName trustFileWithName = new FilePathAndNewName(new File(trustStorePath), "trustStore.jks");
-        File zipFile = zip(Arrays.asList(configFileWithName, keyFileWithName, trustFileWithName), side + SCB_FILE_NAME);
+        File zipFile = zip(Arrays.asList(configFileWithName, keyFileWithName, trustFileWithName),
+                side + "_" + Long.toString(runId) + SCB_FILE_NAME);
         configFile.delete();
 
         return zipFile;
diff --git a/src/main/java/com/datastax/cdm/job/AbstractJobSession.java b/src/main/java/com/datastax/cdm/job/AbstractJobSession.java
index 5c718547..991ae14a 100644
--- a/src/main/java/com/datastax/cdm/job/AbstractJobSession.java
+++ b/src/main/java/com/datastax/cdm/job/AbstractJobSession.java
@@ -110,12 +110,12 @@ public synchronized void initCdmRun(long runId, long prevRunId, Collection<Split
         this.trackRunFeature = trackRunFeature;
         if (null != trackRunFeature)
             trackRunFeature.initCdmRun(runId, prevRunId, parts, runType);
+        DataUtility.deleteGeneratedSCB(runId);
     }
 
     public synchronized void printCounts(boolean isFinal) {
         if (isFinal) {
             jobCounter.printFinal(runId, trackRunFeature);
-            DataUtility.deleteGeneratedSCB();
         } else {
             jobCounter.printProgress();
         }
diff --git a/src/main/scala/com/datastax/cdm/job/BaseJob.scala b/src/main/scala/com/datastax/cdm/job/BaseJob.scala
index 29162e25..3e04a69e 100644
--- a/src/main/scala/com/datastax/cdm/job/BaseJob.scala
+++ b/src/main/scala/com/datastax/cdm/job/BaseJob.scala
@@ -69,10 +69,16 @@ abstract class BaseJob[T: ClassTag] extends App {
     sc = sContext.getConf
     propertyHelper = PropertyHelper.getInstance(sc);
 
+    runId = propertyHelper.getLong(KnownProperties.RUN_ID)
+    prevRunId = propertyHelper.getLong(KnownProperties.PREV_RUN_ID)
+    trackRun = if (0 != prevRunId || 0 != runId) true else propertyHelper.getBoolean(KnownProperties.TRACK_RUN)
+    if (trackRun == true && runId == 0) {
+      runId = System.nanoTime();
+    }
     consistencyLevel = propertyHelper.getString(KnownProperties.READ_CL)
     val connectionFetcher = new ConnectionFetcher(sContext, propertyHelper)
-    originConnection = connectionFetcher.getConnection(Side.ORIGIN, consistencyLevel)
-    targetConnection = connectionFetcher.getConnection(Side.TARGET, consistencyLevel)
+    originConnection = connectionFetcher.getConnection(Side.ORIGIN, consistencyLevel, runId)
+    targetConnection = connectionFetcher.getConnection(Side.TARGET, consistencyLevel, runId)
 
     val hasRandomPartitioner: Boolean = {
       val partitionerName = originConnection.withSessionDo(_.getMetadata.getTokenMap.get().getPartitionerName)
@@ -82,12 +88,6 @@ abstract class BaseJob[T: ClassTag] extends App {
     maxPartition = getMaxPartition(propertyHelper.getString(KnownProperties.PARTITION_MAX), hasRandomPartitioner)
     coveragePercent = propertyHelper.getInteger(KnownProperties.TOKEN_COVERAGE_PERCENT)
     numSplits = propertyHelper.getInteger(KnownProperties.PERF_NUM_PARTS)
-    runId = propertyHelper.getLong(KnownProperties.RUN_ID)
-    prevRunId = propertyHelper.getLong(KnownProperties.PREV_RUN_ID)
-    trackRun = if (0 != prevRunId || 0 != runId) true else propertyHelper.getBoolean(KnownProperties.TRACK_RUN)
-    if (trackRun == true && runId == 0) {
-      runId = System.nanoTime();
-    }
 
     abstractLogger.info("PARAM -- Min Partition: " + minPartition)
     abstractLogger.info("PARAM -- Max Partition: " + maxPartition)
diff --git a/src/main/scala/com/datastax/cdm/job/ConnectionFetcher.scala b/src/main/scala/com/datastax/cdm/job/ConnectionFetcher.scala
index 419fec1d..0186ceaf 100644
--- a/src/main/scala/com/datastax/cdm/job/ConnectionFetcher.scala
+++ b/src/main/scala/com/datastax/cdm/job/ConnectionFetcher.scala
@@ -63,7 +63,7 @@ class ConnectionFetcher(sparkContext: SparkContext, propertyHelper: IPropertyHel
     }
   }
 
-  def getConnection(side: Side, consistencyLevel: String): CassandraConnector = {
+  def getConnection(side: Side, consistencyLevel: String, runId: Long): CassandraConnector = {
     val connectionDetails = getConnectionDetails(side)
     val config: SparkConf = sparkContext.getConf
 
@@ -81,7 +81,7 @@ class ConnectionFetcher(sparkContext: SparkContext, propertyHelper: IPropertyHel
 
       val scbFile = generateSCB(connectionDetails.host, connectionDetails.port, 
       	connectionDetails.trustStorePassword, connectionDetails.trustStorePath, 
-      	connectionDetails.keyStorePassword, connectionDetails.keyStorePath, side)
+      	connectionDetails.keyStorePassword, connectionDetails.keyStorePath, side, runId)
       return CassandraConnector(config
         .set("spark.cassandra.auth.username", connectionDetails.username)
         .set("spark.cassandra.auth.password", connectionDetails.password)
diff --git a/src/test/java/com/datastax/cdm/data/DataUtilityTest.java b/src/test/java/com/datastax/cdm/data/DataUtilityTest.java
index 42938c6a..493fd985 100644
--- a/src/test/java/com/datastax/cdm/data/DataUtilityTest.java
+++ b/src/test/java/com/datastax/cdm/data/DataUtilityTest.java
@@ -166,24 +166,24 @@ public void getMyClassMethodLineTestUnknown() {
     @Test
     public void generateSCBOrigin() throws IOException {
         File scb = DataUtility.generateSCB("localhost", "9042", "trust123", "./pom.xml", "key123", "./pom.xml",
-                PKFactory.Side.ORIGIN);
+                PKFactory.Side.ORIGIN, 0);
         assertNotNull(scb);
-        File file = new File(PKFactory.Side.ORIGIN + DataUtility.SCB_FILE_NAME);
+        File file = new File(PKFactory.Side.ORIGIN + "_" + Long.toString(0) + DataUtility.SCB_FILE_NAME);
         assertTrue(file.exists());
 
-        DataUtility.deleteGeneratedSCB();
+        DataUtility.deleteGeneratedSCB(0);
         assertFalse(file.exists());
     }
 
     @Test
     public void generateSCBTarget() throws IOException {
         File scb = DataUtility.generateSCB("localhost", "9042", "trust123", "./pom.xml", "key123", "./pom.xml",
-                PKFactory.Side.TARGET);
+                PKFactory.Side.TARGET, 0);
         assertNotNull(scb);
-        File file = new File(PKFactory.Side.TARGET + DataUtility.SCB_FILE_NAME);
+        File file = new File(PKFactory.Side.TARGET + "_" + Long.toString(0) + DataUtility.SCB_FILE_NAME);
         assertTrue(file.exists());
 
-        DataUtility.deleteGeneratedSCB();
+        DataUtility.deleteGeneratedSCB(0);
         assertFalse(file.exists());
     }
 }