diff --git a/DRAMSys/library/src/common/TlmRecorder.cpp b/DRAMSys/library/src/common/TlmRecorder.cpp
index 8a42044d..319fe53d 100644
--- a/DRAMSys/library/src/common/TlmRecorder.cpp
+++ b/DRAMSys/library/src/common/TlmRecorder.cpp
@@ -47,7 +47,7 @@
 using namespace tlm;
 
 TlmRecorder::TlmRecorder(const std::string &name, const std::string &dbName) :
-    name(name), totalNumTransactions(1), simulationTimeCoveredByRecording(SC_ZERO_TIME)
+    name(name), totalNumTransactions(0), simulationTimeCoveredByRecording(SC_ZERO_TIME)
 {
     recordedData.reserve(transactionCommitRate);
     setUpTransactionTerminatingPhases();
@@ -118,11 +118,14 @@ void TlmRecorder::recordPhase(tlm_generic_payload &trans,
     std::string phaseBeginPrefix = "BEGIN_";
     std::string phaseEndPrefix = "END_";
 
-    if (phaseName.find(phaseBeginPrefix) != std::string::npos) {
+    if (phaseName.find(phaseBeginPrefix) != std::string::npos)
+    {
         phaseName.erase(0, phaseBeginPrefix.length());
         assert(currentTransactionsInSystem.count(&trans) != 0);
         currentTransactionsInSystem[&trans].insertPhase(phaseName, time);
-    } else {
+    }
+    else
+    {
         phaseName.erase(0, phaseEndPrefix.length());
         assert(currentTransactionsInSystem.count(&trans) != 0);
         currentTransactionsInSystem[&trans].setPhaseEnd(phaseName, time);
@@ -156,22 +159,23 @@ void TlmRecorder::recordDebugMessage(const std::string &message, const sc_time &
 
 void TlmRecorder::introduceTransactionSystem(tlm_generic_payload &trans)
 {
-    uint64_t id = totalNumTransactions++;
-    currentTransactionsInSystem[&trans].id = id;
+    totalNumTransactions++;
+    currentTransactionsInSystem[&trans].id = totalNumTransactions;
     currentTransactionsInSystem[&trans].cmd = trans.get_command() ==
-                                              tlm::TLM_READ_COMMAND ? "R" : "W";
+                                              tlm::TLM_READ_COMMAND ? 'R' : 'W';
     currentTransactionsInSystem[&trans].address = trans.get_address();
     currentTransactionsInSystem[&trans].burstLength = DramExtension::getBurstLength(trans);
     currentTransactionsInSystem[&trans].dramExtension = DramExtension::getExtension(trans);
     currentTransactionsInSystem[&trans].timeOfGeneration = GenerationExtension::getTimeOfGeneration(trans);
 
-    PRINTDEBUGMESSAGE(name, "New transaction #" + std::to_string(id) + " generation time " +
+    PRINTDEBUGMESSAGE(name, "New transaction #" + std::to_string(totalNumTransactions) + " generation time " +
                       currentTransactionsInSystem[&trans].timeOfGeneration.to_string());
 
-    if (id % transactionCommitRate == 0)
+    if (totalNumTransactions % transactionCommitRate == 0)
     {
         PRINTDEBUGMESSAGE(name, "Committing transactions " +
-                          std::to_string(id - transactionCommitRate + 1) + " - " + std::to_string(id));
+                          std::to_string(totalNumTransactions - transactionCommitRate + 1)
+                          + " - " + std::to_string(totalNumTransactions));
         commitRecordedDataToDB();
     }
 }
@@ -333,7 +337,7 @@ void TlmRecorder::insertDebugMessageInDB(const std::string &message, const sc_ti
 
 void TlmRecorder::insertGeneralInfo()
 {
-    sqlite3_bind_int64(insertGeneralInfoStatement, 1, static_cast<int64_t>(totalNumTransactions - 1));
+    sqlite3_bind_int64(insertGeneralInfoStatement, 1, static_cast<int64_t>(totalNumTransactions));
     sqlite3_bind_int64(insertGeneralInfoStatement, 2, static_cast<int64_t>(simulationTimeCoveredByRecording.value()));
     sqlite3_bind_int(insertGeneralInfoStatement, 3, static_cast<int>(Configuration::getInstance().memSpec->numberOfRanks));
     sqlite3_bind_int(insertGeneralInfoStatement, 4, static_cast<int>(Configuration::getInstance().memSpec->numberOfBankGroups));
@@ -421,7 +425,7 @@ void TlmRecorder::insertTransactionInDB(Transaction &recordingData)
     sqlite3_bind_int64(insertTransactionStatement, 14,
                        static_cast<int64_t>(recordingData.timeOfGeneration.value()));
     sqlite3_bind_text(insertTransactionStatement, 15,
-                      recordingData.cmd.c_str(), static_cast<int>(recordingData.cmd.length()), nullptr);
+                      &recordingData.cmd, 1, nullptr);
 
     executeSqlStatement(insertTransactionStatement);
 }
@@ -478,7 +482,7 @@ void TlmRecorder::closeConnection()
     insertGeneralInfo();
     insertCommandLengths();
     PRINTDEBUGMESSAGE(name, "Number of transactions written to DB: "
-                      + std::to_string(totalNumTransactions - 1));
+                      + std::to_string(totalNumTransactions));
     PRINTDEBUGMESSAGE(name, "tlmPhaseRecorder:\tEnd Recording");
     sqlite3_close(db);
     db = nullptr;
diff --git a/DRAMSys/library/src/common/TlmRecorder.h b/DRAMSys/library/src/common/TlmRecorder.h
index 37bf787b..aeeb8ce1 100644
--- a/DRAMSys/library/src/common/TlmRecorder.h
+++ b/DRAMSys/library/src/common/TlmRecorder.h
@@ -92,7 +92,7 @@ private:
         uint64_t id;
         uint64_t address;
         unsigned int burstLength;
-        std::string cmd;
+        char cmd;
         DramExtension dramExtension;
         sc_time timeOfGeneration;
         TimeInterval timeOnDataStrobe;
@@ -132,7 +132,7 @@ private:
                          uint64_t transactionID);
     void insertDebugMessageInDB(const std::string &message, const sc_time &time);
 
-    static const int transactionCommitRate = 1000;
+    static constexpr unsigned transactionCommitRate = 1024;
     std::vector<Transaction> recordedData;
     std::map<tlm::tlm_generic_payload *, Transaction> currentTransactionsInSystem;