diff --git a/docs/stellar-core_example.cfg b/docs/stellar-core_example.cfg
index edc0680f90..b0952d150d 100644
--- a/docs/stellar-core_example.cfg
+++ b/docs/stellar-core_example.cfg
@@ -238,13 +238,13 @@ CATCHUP_RECENT=1024
 # This limits the number that will be active at a time.
 MAX_CONCURRENT_SUBPROCESSES=10
 
-# AUTOMATIC_MAINTENANCE_PERIOD (integer, seconds) default 3600
+# AUTOMATIC_MAINTENANCE_PERIOD (integer, seconds) default 14400
 # Interval between automatic maintenance executions
 # Set to 0 to disable automatic maintenance
-AUTOMATIC_MAINTENANCE_PERIOD=3600
+AUTOMATIC_MAINTENANCE_PERIOD=14400
 
 # AUTOMATIC_MAINTENANCE_COUNT (integer) default 50000
-# Number of unneeded rows in each table that will be removed during one
+# Number of unneeded ledgers in each table that will be removed during one
 # maintenance run.
 # Set to 0 to disable automatic maintenance
 AUTOMATIC_MAINTENANCE_COUNT=5000
diff --git a/src/database/DatabaseUtils.cpp b/src/database/DatabaseUtils.cpp
index 445a892347..9bf9ca1fec 100644
--- a/src/database/DatabaseUtils.cpp
+++ b/src/database/DatabaseUtils.cpp
@@ -22,7 +22,10 @@ deleteOldEntriesHelper(soci::session& sess, uint32_t ledgerSeq, uint32_t count,
     st.execute(true);
     if (st.got_data() && gotMin == soci::i_ok)
     {
-        uint32 m = std::min(curMin + count, ledgerSeq);
+        uint64 m64 =
+            std::min<uint64>(static_cast<uint64>(curMin) + count, ledgerSeq);
+        // safe to cast down as it's at most ledgerSeq
+        uint64 m = static_cast<uint32>(m64);
         sess << "DELETE FROM " << tableName << " WHERE " << ledgerSeqColumn
              << " <= " << m;
     }
diff --git a/src/ledger/LedgerManagerImpl.cpp b/src/ledger/LedgerManagerImpl.cpp
index aa5198d676..ed2c61236e 100644
--- a/src/ledger/LedgerManagerImpl.cpp
+++ b/src/ledger/LedgerManagerImpl.cpp
@@ -807,9 +807,13 @@ void
 LedgerManagerImpl::deleteOldEntries(Database& db, uint32_t ledgerSeq,
                                     uint32_t count)
 {
+    soci::transaction txscope(db.getSession());
+    db.clearPreparedStatementCache();
     LedgerHeaderFrame::deleteOldEntries(db, ledgerSeq, count);
     TransactionFrame::deleteOldEntries(db, ledgerSeq, count);
     HerderPersistence::deleteOldEntries(db, ledgerSeq, count);
+    db.clearPreparedStatementCache();
+    txscope.commit();
 }
 
 void
diff --git a/src/main/Config.cpp b/src/main/Config.cpp
index 9b490e55da..f9b96b4904 100644
--- a/src/main/Config.cpp
+++ b/src/main/Config.cpp
@@ -42,7 +42,7 @@ Config::Config() : NODE_SEED(SecretKey::random())
     MANUAL_CLOSE = false;
     CATCHUP_COMPLETE = false;
     CATCHUP_RECENT = 0;
-    AUTOMATIC_MAINTENANCE_PERIOD = std::chrono::seconds{3600};
+    AUTOMATIC_MAINTENANCE_PERIOD = std::chrono::seconds{14400};
     AUTOMATIC_MAINTENANCE_COUNT = 50000;
     ARTIFICIALLY_GENERATE_LOAD_FOR_TESTING = false;
     ARTIFICIALLY_ACCELERATE_TIME_FOR_TESTING = false;
diff --git a/src/main/Maintainer.cpp b/src/main/Maintainer.cpp
index 5ffe241d09..d3c6a95374 100644
--- a/src/main/Maintainer.cpp
+++ b/src/main/Maintainer.cpp
@@ -17,9 +17,12 @@ Maintainer::Maintainer(Application& app) : mApp{app}, mTimer{mApp}
 void
 Maintainer::start()
 {
-    if (mApp.getConfig().AUTOMATIC_MAINTENANCE_PERIOD.count() > 0 &&
-        mApp.getConfig().AUTOMATIC_MAINTENANCE_COUNT > 0)
+    auto& c = mApp.getConfig();
+    if (c.AUTOMATIC_MAINTENANCE_PERIOD.count() > 0 &&
+        c.AUTOMATIC_MAINTENANCE_COUNT > 0)
+    {
         scheduleMaintenance();
+    }
 }
 
 void