diff --git a/bin/tests/system/cacheclean/clean.sh b/bin/tests/system/cacheclean/clean.sh
index 2a17346393..39396277ed 100644
--- a/bin/tests/system/cacheclean/clean.sh
+++ b/bin/tests/system/cacheclean/clean.sh
@@ -16,5 +16,5 @@ rm -f dig.out.ns2
 rm -f dig.out.expire
 rm -f */named.memstats
 rm -f */named.run
-rm -f ns2/named_dump.db
+rm -f ns2/named_dump.db.*
 rm -f ns*/named.lock
diff --git a/bin/tests/system/cacheclean/tests.sh b/bin/tests/system/cacheclean/tests.sh
index 2c6f2ccac2..56f96e667c 100644
--- a/bin/tests/system/cacheclean/tests.sh
+++ b/bin/tests/system/cacheclean/tests.sh
@@ -12,6 +12,7 @@ SYSTEMTESTTOP=..
 . $SYSTEMTESTTOP/conf.sh
 
 status=0
+n=0
 
 RNDCOPTS="-c ../common/rndc.conf -s 10.53.0.2 -p 9953"
 DIGOPTS="+nosea +nocomm +nocmd +noquest +noadd +noauth +nocomm \
@@ -55,9 +56,13 @@ EOF
 }
 
 dump_cache () {
-        rm -f ns2/named_dump.db
         $RNDC $RNDCOPTS dumpdb -cache _default
-        sleep 1
+        for i in 0 1 2 3 4 5 6 7 8 9
+        do
+                grep '^; Dump complete$' ns2/named_dump.db > /dev/null && break
+                sleep 1
+        done
+        mv ns2/named_dump.db ns2/named_dump.db.$n
 }
 
 clear_cache () {
@@ -75,36 +80,41 @@ in_cache () {
         return 0
 }
 
-echo "I:check correctness of routine cache cleaning"
+n=`expr $n + 1`
+echo "I:check correctness of routine cache cleaning ($n)"
 $DIG $DIGOPTS +tcp +keepopen -b 10.53.0.7 -f dig.batch > dig.out.ns2 || status=1
 grep ";" dig.out.ns2
 
 $PERL ../digcomp.pl --lc dig.out.ns2 knowngood.dig.out || status=1
 
-echo "I:only one tcp socket was used"
+n=`expr $n + 1`
+echo "I:only one tcp socket was used ($n)"
 tcpclients=`awk '$3 == "client" && $5 ~ /10.53.0.7#[0-9]*:/ {print $5}' ns2/named.run | sort | uniq -c | wc -l`
 
 test $tcpclients -eq 1 || { status=1; echo "I:failed"; }
 
-echo "I:reset and check that records are correctly cached initially"
+n=`expr $n + 1`
+echo "I:reset and check that records are correctly cached initially ($n)"
 ret=0
 load_cache
 dump_cache
-nrecords=`grep flushtest.example ns2/named_dump.db | grep -v '^;' | egrep '(TXT|ANY)'|  wc -l`
+nrecords=`grep flushtest.example ns2/named_dump.db.$n | grep -v '^;' | egrep '(TXT|ANY)'|  wc -l`
 [ $nrecords -eq 17 ] || { ret=1; echo "I: found $nrecords records expected 17"; }
 if [ $ret != 0 ]; then echo "I:failed"; fi
 status=`expr $status + $ret`
 
-echo "I:check flushing of the full cache"
+n=`expr $n + 1`
+echo "I:check flushing of the full cache ($n)"
 ret=0
 clear_cache
 dump_cache
-nrecords=`grep flushtest.example ns2/named_dump.db | grep -v '^;' | wc -l`
+nrecords=`grep flushtest.example ns2/named_dump.db.$n | grep -v '^;' | wc -l`
 [ $nrecords -eq 0 ] || ret=1
 if [ $ret != 0 ]; then echo "I:failed"; fi
 status=`expr $status + $ret`
 
-echo "I:check flushing of individual nodes (interior node)"
+n=`expr $n + 1`
+echo "I:check flushing of individual nodes (interior node) ($n)"
 ret=0
 clear_cache
 load_cache
@@ -115,7 +125,8 @@ in_cache txt top1.flushtest.example && ret=1
 if [ $ret != 0 ]; then echo "I:failed"; fi
 status=`expr $status + $ret`
 
-echo "I:check flushing of individual nodes (leaf node, under the interior node)"
+n=`expr $n + 1`
+echo "I:check flushing of individual nodes (leaf node, under the interior node) ($n)"
 ret=0
 # leaf node, under the interior node (should still exist)
 in_cache txt third2.second1.top1.flushtest.example || ret=1
@@ -124,7 +135,8 @@ in_cache txt third2.second1.top1.flushtest.example && ret=1
 if [ $ret != 0 ]; then echo "I:failed"; fi
 status=`expr $status + $ret`
 
-echo "I:check flushing of individual nodes (another leaf node, with both positive and negative cache entries)"
+n=`expr $n + 1`
+echo "I:check flushing of individual nodes (another leaf node, with both positive and negative cache entries) ($n)"
 ret=0
 # another leaf node, with both positive and negative cache entries
 in_cache a third1.second1.top1.flushtest.example || ret=1
@@ -135,13 +147,15 @@ in_cache txt third1.second1.top1.flushtest.example && ret=1
 if [ $ret != 0 ]; then echo "I:failed"; fi
 status=`expr $status + $ret`
 
-echo "I:check flushing a nonexistent name"
+n=`expr $n + 1`
+echo "I:check flushing a nonexistent name ($n)"
 ret=0
 $RNDC $RNDCOPTS flushname fake.flushtest.example || ret=1
 if [ $ret != 0 ]; then echo "I:failed"; fi
 status=`expr $status + $ret`
 
-echo "I:check flushing of namespaces"
+n=`expr $n + 1`
+echo "I:check flushing of namespaces ($n)"
 ret=0
 clear_cache
 load_cache
@@ -167,21 +181,24 @@ in_cache txt second3.top2.flushtest.example && ret=1
 if [ $ret != 0 ]; then echo "I:failed"; fi
 status=`expr $status + $ret`
 
-echo "I:check flushing a nonexistent namespace"
+n=`expr $n + 1`
+echo "I:check flushing a nonexistent namespace ($n)"
 ret=0
 $RNDC $RNDCOPTS flushtree fake.flushtest.example || ret=1
 if [ $ret != 0 ]; then echo "I:failed"; fi
 status=`expr $status + $ret`
 
-echo "I:check the number of cached records remaining"
+n=`expr $n + 1`
+echo "I:check the number of cached records remaining ($n)"
 ret=0
 dump_cache
-nrecords=`grep flushtest.example ns2/named_dump.db | grep -v '^;' | egrep '(TXT|ANY)' |  wc -l`
+nrecords=`grep flushtest.example ns2/named_dump.db.$n | grep -v '^;' | egrep '(TXT|ANY)' |  wc -l`
 [ $nrecords -eq 17 ] || { ret=1; echo "I: found $nrecords records expected 17"; }
 if [ $ret != 0 ]; then echo "I:failed"; fi
 status=`expr $status + $ret`
 
-echo "I:check the check that flushname of a partial match works."
+n=`expr $n + 1`
+echo "I:check the check that flushname of a partial match works ($n)"
 ret=0
 in_cache txt second2.top1.flushtest.example || ret=1
 $RNDC $RNDCOPTS flushtree example
@@ -189,33 +206,39 @@ in_cache txt second2.top1.flushtest.example && ret=1
 if [ $ret != 0 ]; then echo "I:failed"; fi
 status=`expr $status + $ret`
 
-echo "I:check the number of cached records remaining"
+n=`expr $n + 1`
+echo "I:check the number of cached records remaining ($n)"
 ret=0
 dump_cache
-nrecords=`grep flushtest.example ns2/named_dump.db | grep -v '^;' | egrep '(TXT|ANY)' |  wc -l`
+nrecords=`grep flushtest.example ns2/named_dump.db.$n | grep -v '^;' | egrep '(TXT|ANY)' |  wc -l`
 [ $nrecords -eq 1 ] || { ret=1; echo "I: found $nrecords records expected 1"; }
 if [ $ret != 0 ]; then echo "I:failed"; fi
 status=`expr $status + $ret`
 
-echo "I:check flushtree clears adb correctly"
+n=`expr $n + 1`
+echo "I:check flushtree clears adb correctly ($n)"
 ret=0
 load_cache
 dump_cache
-awk '/plain success\/timeout/ {getline; getline; if ($2 == "ns.flushtest.example") exit(0); exit(1); }' ns2/named_dump.db || ret=1
+mv ns2/named_dump.db.$n ns2/named_dump.db.$n.a
+sed -n '/plain success\/timeout/,/Unassociated entries/p' ns2/named_dump.db.$n.a | grep 'ns.flushtest.example' > /dev/null 2>&1 || ret=1
 $RNDC $RNDCOPTS flushtree flushtest.example || ret=1
 dump_cache
-awk '/plain success\/timeout/ {getline; getline; if ($2 == "ns.flushtest.example") exit(1); exit(0); }' ns2/named_dump.db || ret=1
+mv ns2/named_dump.db.$n ns2/named_dump.db.$n.b
+sed -n '/plain success\/timeout/,/Unassociated entries/p' ns2/named_dump.db.$n.b | grep 'ns.flushtest.example' > /dev/null 2>&1 && ret=1
 if [ $ret != 0 ]; then echo "I:failed"; fi
 status=`expr $status + $ret`
 
-echo "I:check expire option returned from master zone"
+n=`expr $n + 1`
+echo "I:check expire option returned from master zone ($n)"
 ret=0
 $DIG @10.53.0.1 -p 5300 +expire soa expire-test > dig.out.expire
 grep EXPIRE: dig.out.expire > /dev/null || ret=1
 if [ $ret != 0 ]; then echo "I:failed"; fi
 status=`expr $status + $ret`
 
-echo "I:check expire option returned from slave zone"
+n=`expr $n + 1`
+echo "I:check expire option returned from slave zone ($n)"
 ret=0
 $DIG @10.53.0.2 -p 5300 +expire soa expire-test > dig.out.expire
 grep EXPIRE: dig.out.expire > /dev/null || ret=1