本文主要是介绍TimesTen 应用层数据库缓存学习：10. 监控缓存组的autorefresh操作，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
测试环境准备
$ sqlplus tthr/oracle@ttorcl
create table orders(ord_num int primary key, ship_time timestamp not null);
insert into orders values(1, sysdate);
commit;
grant select on orders to cacheadm;$ ttisql -connstr "dsn=cachedb1_1122;uid=cacheadm;pwd=timesten;oraclepwd=oracle" -e "set prompt 'cacheadm>'"
cacheadm>
CREATE READONLY CACHE GROUP "RO" AUTOREFRESH MODE INCREMENTAL INTERVAL 5 SECONDSSTATE ONFROM"TTHR"."ORDERS" ("ORD_NUM" NUMBER(38) NOT NULL,"SHIP_TIME" TIMESTAMP(6) NOT NULL,PRIMARY KEY("ORD_NUM"))
cacheadm>cachegroups cacheadm.ro;Cache Group CACHEADM.RO:Cache Group Type: Read OnlyAutorefresh: YesAutorefresh Mode: IncrementalAutorefresh State: OnAutorefresh Interval: 5 SecondsAutorefresh Status: okAging: No aging definedRoot Table: TTHR.ORDERSTable Type: Read Only1 cache group found.tthr>select * from orders;
< 1, 2016-04-21 03:36:50.000000 >
1 row found.$ sqlplus tthr/oracle@ttorcl
declare ord_num number;
begin
for i in 1..1000 loop
select max(ord_num) into ord_num from orders;
insert into orders values(ord_num+1, sysdate);
commit;
dbms_lock.sleep( 2 );
end loop;
end;
/使用 ttCacheAutorefreshStatsGet 过程
ttCacheAutorefreshStatsGet返回最近10次auto refresh的统计，包括每次刷新的行数，字节，累积刷新的行数，字节，执行刷新的时间等。
# 在Oracle的批量插入任务启动之前
tthr>call ttcacheautorefreshstatsget('cacheadm','ro');
< 3766624, 2016-04-21 03:41:16.000000, 3779960, 40, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Complete, 0, 0, 0, 2016-04-21 03:38:23.000000, 0 >
< 3766624, 2016-04-21 03:41:11.000000, 3774960, 39, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Complete, 0, 0, 0, 2016-04-21 03:38:23.000000, 0 >
< 3766624, 2016-04-21 03:41:06.000000, 3769960, 38, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Complete, 0, 0, 0, 2016-04-21 03:38:23.000000, 0 >
< 3766624, 2016-04-21 03:41:01.000000, 3764940, 37, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Complete, 0, 0, 0, 2016-04-21 03:38:23.000000, 0 >
< 3766624, 2016-04-21 03:40:56.000000, 3759940, 36, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Complete, 0, 0, 0, 2016-04-21 03:38:23.000000, 0 >
< 3766624, 2016-04-21 03:40:51.000000, 3754910, 35, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Complete, 0, 0, 0, 2016-04-21 03:38:23.000000, 0 >
< 3766624, 2016-04-21 03:40:46.000000, 3749910, 34, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Complete, 0, 0, 0, 2016-04-21 03:38:23.000000, 0 >
< 3766624, 2016-04-21 03:40:41.000000, 3744900, 33, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Complete, 0, 0, 0, 2016-04-21 03:38:23.000000, 0 >
< 3766624, 2016-04-21 03:40:36.000000, 3739900, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Complete, 0, 0, 0, 2016-04-21 03:38:23.000000, 0 >
< 3766624, 2016-04-21 03:40:31.000000, 3734900, 31, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Complete, 0, 0, 0, 2016-04-21 03:38:23.000000, 0 >
10 rows found.
# 在Oracle的批量插入任务启动之后
tthr>call ttcacheautorefreshstatsget('cacheadm','ro');
< 3766624, 2016-04-21 03:44:32.000000, 3975150, 79, 10, 2, 28, 2, 0, 10, 0, 26, 356, 26, 160, Complete, 2, 26, 0, 2016-04-21 03:43:23.000000, 0 >
< 3766624, 2016-04-21 03:44:27.000000, 3970150, 78, 10, 3, 42, 3, 10, 0, 0, 24, 328, 24, 150, Complete, 3, 24, 0, 2016-04-21 03:43:23.000000, 0 >
< 3766624, 2016-04-21 03:44:22.000000, 3965150, 77, 0, 2, 28, 2, 0, 0, 0, 21, 286, 21, 140, Complete, 2, 21, 0, 2016-04-21 03:43:23.000000, 0 >
< 3766624, 2016-04-21 03:44:17.000000, 3960150, 76, 10, 3, 42, 3, 10, 0, 0, 19, 258, 19, 140, Complete, 3, 19, 0, 2016-04-21 03:43:23.000000, 0 >
< 3766624, 2016-04-21 03:44:12.000000, 3955140, 75, 0, 2, 28, 2, 0, 0, 0, 16, 216, 16, 130, Complete, 2, 16, 0, 2016-04-21 03:43:23.000000, 0 >
< 3766624, 2016-04-21 03:44:07.000000, 3950140, 74, 0, 3, 42, 3, 0, 0, 0, 14, 188, 14, 130, Complete, 3, 14, 0, 2016-04-21 03:43:23.000000, 0 >
< 3766624, 2016-04-21 03:44:02.000000, 3945130, 73, 0, 2, 28, 2, 0, 0, 0, 11, 146, 11, 130, Complete, 2, 11, 0, 2016-04-21 03:43:23.000000, 0 >
< 3766624, 2016-04-21 03:43:57.000000, 3940130, 72, 10, 3, 40, 3, 0, 10, 0, 9, 118, 9, 130, Complete, 3, 9, 0, 2016-04-21 03:43:23.000000, 0 >
< 3766624, 2016-04-21 03:43:52.000000, 3935130, 71, 40, 2, 26, 2, 0, 40, 0, 6, 78, 6, 120, Complete, 2, 6, 0, 2016-04-21 03:43:23.000000, 0 >
< 3766624, 2016-04-21 03:43:47.000000, 3930120, 70, 10, 3, 39, 3, 10, 0, 0, 4, 52, 4, 80, Complete, 3, 4, 0, 2016-04-21 03:43:23.000000, 0 >
10 rows found.
# 可以看到，由于auto refresh频率为5秒，而插入是每2秒一次，因此，每次auto refresh的行数为2或3，字节数为28或42。
不过只能看近10次的数据太局限了，只适合在线监控，而不能历史查询。
下面会谈到，所有auto refresh的历史信息都会记录在support log，即ttmesg.log中。
显示change log表的信息
$ sqlplus cacheadm/oracle@ttorcl <- 用cache administrator用户登录SQL*Plus: Release 11.2.0.2.0 Production on Thu Apr 21 04:01:13 2016Copyright (c) 1982, 2010, Oracle. All rights reserved.Connected to:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing optionsSQL> @cacheInfo
*************Autorefresh Objects Information ***************
Host name: timesten-hol
Timesten datastore name:
/home/oracle/TimesTen/tt1122/info/DemoDataStore/cachedb1_1122
Cache table name: TTHR.ORDERS
Change log table name: tt_06_87139_L
Number of rows in change log table: 6
Maximum logseq on the change log table: 213
Timesten has autorefreshed updates upto logseq: 212
Number of updates waiting to be autorefreshed: 3
Number of updates that has not been marked with a valid logseq: 1
****************************
*************No DDL Tracking objects are found*************PL/SQL procedure successfully completed.SQL> select * from TT_06_87139_lLOGSEQ FT_CACHEGROUP ORD_NUM XID
---------- ------------- ---------- --------------------405 0 1009 6.28.25350405 0 1010 9.3.25402404 0 1006 6.31.25342406 0 1011 1.2.19039404 0 1007 5.9.25582404 0 1008 2.11.25415406 0 1012 2.9.25414406 0 1013 10.16.190218 rows selected.
support log（ttmesg.log）中autorefresh相关信息
在support log中，所有以CAC开头的信息都与cache agent有关，你可以使用CAC或’auto refresh’来搜索，例如：
$ grep CAC ttmesg.log |wc -l
12192
$ grep -i 'autorefresh' ttmesg.log |wc -l
6658
日志中显示的信息比之前ttCacheAutorefreshStatsGet显示的可读性更强，如
04:33:26.63 Info: CAC: 3938: TT47087-3938-1083492672-refresh06188: CACHEDB1_1122 Cache agent refreshed cache group CACHEADM.RO: Number - 665, Start Timestamp - Thu Apr 21 04:33:26 2016 , Cache Agent Uptime - 6909520ms, Duration - 0ms, NumRows - 5, NumRootTblRows - 5, NumInsertRows - 3, NumUpdateRows - 2, NumDeleteRows - 0, NumOracleRowsFetched - 5, NumOracleBytes - 80, ValidationDuration - 0ms, MarkerDuration - 0ms, RetrieveLogTblInfoDuration - 10ms, queryExecDuration - 0ms, queryFetchDuration - 0ms, ttApplyDuration - 0ms, tt1stXactCommitTime - 4ms, tt2ndXactCommitTime - 0ms, ttNumCommits - 1, totalNumRows - 2117, totalNumRootTblRows - 2117, totalNumOracleRowsFetched - 2117, totalNumOracleBytes - 32484, totalDuration - 1760ms, Status - Complete
auto refresh成功的信息如下:
04:33:26.63 Info: CAC: 3938: TT47119-3938-1083492672-refresh06262: CACHEDB1_1122 Autorefresh number 665 finished for interval 5000ms successfully
04:33:26.63 Info: CAC: 3938: TT47078-3938-1083492672-fresher01809: CACHEDB1_1122 Autorefresh number 665 succeeded for interval 5000 milliseconds
诊断 autorefresh 性能问题
使用ttTraceMon
$ tttracemon cachedb1_1122
Trace monitor; empty line to exit
Trace> level autorefresh 1
Trace> dump
23:45:41.266 4097 AGING 1L 135C 2613P Entering sbAgingLRU(): curTime=1102, minAccessCounter=1089
23:45:41.266 4098 AGING 1L 135C 2613P Exiting sbAgingLRU(): curTime=1102, minAccessCounter=1089, permRatio=0.236157, highMemThreshold=0.300000
23:46:41.310 4099 AGING 1L 135C 2613P Entering sbAgingLRU(): curTime=1103, minAccessCounter=1089
23:46:41.310 4100 AGING 1L 135C 2613P Exiting sbAgingLRU(): curTime=1103, minAccessCounter=1089, permRatio=0.236157, highMemThreshold=0.300000
23:47:41.422 4101 AGING 1L 135C 2613P Entering sbAgingLRU(): curTime=1104, minAccessCounter=1089
23:47:41.422 4102 AGING 1L 135C 2613P Exiting sbAgingLRU(): curTime=1104, minAccessCounter=1089, permRatio=0.236157, highMemThreshold=0.300000
23:48:41.475 4103 AGING 1L 135C 2613P Entering sbAgingLRU(): curTime=1105, minAccessCounter=1089
23:48:41.475 4104 AGING 1L 135C 2613P Exiting sbAgingLRU(): curTime=1105, minAccessCounter=1089, permRatio=0.236157, highMemThreshold=0.300000
23:49:41.543 4105 AGING 1L 135C 2613P Entering sbAgingLRU(): curTime=1106, minAccessCounter=1089
23:49:41.543 4106 AGING 1L 135C 2613P Exiting sbAgingLRU(): curTime=1106, minAccessCounter=1089, permRatio=0.236157, highMemThreshold=0.300000
23:50:41.587 4107 AGING 1L 135C 2613P Entering sbAgingTB(): curTime=1107
23:50:41.587 4108 AGING 2L 135C 2613P Entering sbAgingOneTable(): curTime=1107, ltblid= 1798080
23:50:41.588 4109 AGING 2L 135C 2613P Exiting sbAgingOneTable(): curTime=1107, reason = 'no more qualified rows found', 0 deleted, 0 remaining, tbl = ORACLE.TBAGING
23:50:41.588 4110 AGING 1L 135C 2613P Exiting sbAgingTB(): curTime=1107
23:50:41.588 4111 AGING 1L 135C 2613P Entering sbAgingLRU(): curTime=1107, minAccessCounter=1089
23:50:41.588 4112 AGING 1L 135C 2613P Exiting sbAgingLRU(): curTime=1107, minAccessCounter=1089, permRatio=0.236157, highMemThreshold=0.300000
23:51:41.686 4113 AGING 1L 135C 2613P Entering sbAgingTB(): curTime=1108
23:51:41.686 4114 AGING 2L 135C 2613P Entering sbAgingOneTable(): curTime=1108, ltblid= 1798080
23:51:41.686 4115 AGING 2L 135C 2613P Exiting sbAgingOneTable(): curTime=1108, reason = 'no more qualified rows found', 0 deleted, 2 remaining, tbl = ORACLE.TBAGING
23:51:41.686 4116 AGING 1L 135C 2613P Exiting sbAgingTB(): curTime=1108
23:51:41.686 4117 AGING 1L 135C 2613P Entering sbAgingLRU(): curTime=1108, minAccessCounter=1089
23:51:41.686 4118 AGING 1L 135C 2613P Exiting sbAgingLRU(): curTime=1108, minAccessCounter=1089, permRatio=0.236523, highMemThreshold=0.300000
23:52:41.765 4119 AGING 1L 135C 2613P Entering sbAgingTB(): curTime=1109
23:52:41.765 4120 AGING 2L 135C 2613P Entering sbAgingOneTable(): curTime=1109, ltblid= 1798080
23:52:41.765 4121 AGING 3L 135C 2613P curTime=1109, 0 deleted, 0 remaining, tbl = ORACLE.TBAGING
23:52:41.765 4122 AGING 2L 135C 2613P Exiting sbAgingOneTable(): curTime=1109, reason = 'no more rows', 0 deleted, 0 remaining, tbl = ORACLE.TBAGING
23:52:41.765 4123 AGING 1L 135C 2613P Exiting sbAgingTB(): curTime=1109
23:52:41.765 4124 AGING 1L 135C 2613P Entering sbAgingLRU(): curTime=1109, minAccessCounter=1089
23:52:41.765 4125 AGING 1L 135C 2613P Exiting sbAgingLRU(): curTime=1109, minAccessCounter=1089, permRatio=0.236157, highMemThreshold=0.300000
23:53:41.815 4126 AGING 1L 135C 2613P Entering sbAgingTB(): curTime=1110
23:53:41.815 4127 AGING 2L 135C 2613P Entering sbAgingOneTable(): curTime=1110, ltblid= 1798080
23:53:41.815 4128 AGING 2L 135C 2613P Exiting sbAgingOneTable(): curTime=1110, reason = 'no more qualified rows found', 0 deleted, 0 remaining, tbl = ORACLE.TBAGING
23:53:41.815 4129 AGING 1L 135C 2613P Exiting sbAgingTB(): curTime=1110
23:53:41.815 4130 AGING 1L 135C 2613P Entering sbAgingLRU(): curTime=1110, minAccessCounter=1089
23:53:41.815 4131 AGING 1L 135C 2613P Exiting sbAgingLRU(): curTime=1110, minAccessCounter=1089, permRatio=0.236157, highMemThreshold=0.300000
23:54:41.859 4132 AGING 1L 135C 2613P Entering sbAgingTB(): curTime=1111
23:54:41.859 4133 AGING 2L 135C 2613P Entering sbAgingOneTable(): curTime=1111, ltblid= 1798080
23:54:41.859 4134 AGING 2L 135C 2613P Exiting sbAgingOneTable(): curTime=1111, reason = 'no more qualified rows found', 0 deleted, 0 remaining, tbl = ORACLE.TBAGING
23:54:41.859 4135 AGING 1L 135C 2613P Exiting sbAgingTB(): curTime=1111
23:54:41.859 4136 AGING 1L 135C 2613P Entering sbAgingLRU(): curTime=1111, minAccessCounter=1089
23:54:41.859 4137 AGING 1L 135C 2613P Exiting sbAgingLRU(): curTime=1111, minAccessCounter=1089, permRatio=0.236157, highMemThreshold=0.300000
23:55:41.896 4138 AGING 1L 135C 2613P Entering sbAgingTB(): curTime=1112
23:55:41.896 4139 AGING 2L 135C 2613P Entering sbAgingOneTable(): curTime=1112, ltblid= 1798080
23:55:41.896 4140 AGING 2L 135C 2613P Exiting sbAgingOneTable(): curTime=1112, reason = 'no more qualified rows found', 0 deleted, 0 remaining, tbl = ORACLE.TBAGING
23:55:41.896 4141 AGING 1L 135C 2613P Exiting sbAgingTB(): curTime=1112
23:55:41.896 4142 AGING 1L 135C 2613P Entering sbAgingLRU(): curTime=1112, minAccessCounter=1089
23:55:41.896 4143 AGING 1L 135C 2613P Exiting sbAgingLRU(): curTime=1112, minAccessCounter=1089, permRatio=0.236157, highMemThreshold=0.300000
23:56:41.961 4144 AGING 1L 135C 2613P Entering sbAgingTB(): curTime=1113
23:56:41.961 4145 AGING 2L 135C 2613P Entering sbAgingOneTable(): curTime=1113, ltblid= 1798080
23:56:41.961 4146 AGING 2L 135C 2613P Exiting sbAgingOneTable(): curTime=1113, reason = 'no more qualified rows found', 0 deleted, 0 remaining, tbl = ORACLE.TBAGING
23:56:41.961 4147 AGING 1L 135C 2613P Exiting sbAgingTB(): curTime=1113
23:56:41.961 4148 AGING 1L 135C 2613P Entering sbAgingLRU(): curTime=1113, minAccessCounter=1089
23:56:41.961 4149 AGING 1L 135C 2613P Exiting sbAgingLRU(): curTime=1113, minAccessCounter=1089, permRatio=0.236157, highMemThreshold=0.300000
23:57:42.032 4150 AGING 1L 135C 2613P Entering sbAgingTB(): curTime=1114
23:57:42.032 4151 AGING 2L 135C 2613P Entering sbAgingOneTable(): curTime=1114, ltblid= 1798080
23:57:42.032 4152 AGING 2L 135C 2613P Exiting sbAgingOneTable(): curTime=1114, reason = 'no more qualified rows found', 0 deleted, 0 remaining, tbl = ORACLE.TBAGING
23:57:42.032 4153 AGING 1L 135C 2613P Exiting sbAgingTB(): curTime=1114
23:57:42.032 4154 AGING 1L 135C 2613P Entering sbAgingLRU(): curTime=1114, minAccessCounter=1089
23:57:42.032 4155 AGING 1L 135C 2613P Exiting sbAgingLRU(): curTime=1114, minAccessCounter=1089, permRatio=0.236157, highMemThreshold=0.300000
23:58:42.203 4156 AGING 1L 135C 2613P Entering sbAgingTB(): curTime=1115
23:58:42.203 4157 AGING 2L 135C 2613P Entering sbAgingOneTable(): curTime=1115, ltblid= 1798080
23:58:42.204 4158 AGING 2L 135C 2613P Exiting sbAgingOneTable(): curTime=1115, reason = 'no more qualified rows found', 0 deleted, 0 remaining, tbl = ORACLE.TBAGING
23:58:42.204 4159 AGING 1L 135C 2613P Exiting sbAgingTB(): curTime=1115
23:58:42.204 4160 AGING 1L 135C 2613P Entering sbAgingLRU(): curTime=1115, minAccessCounter=1089
23:58:42.204 4161 AGING 1L 135C 2613P Exiting sbAgingLRU(): curTime=1115, minAccessCounter=1089, permRatio=0.236157, highMemThreshold=0.300000
23:59:42.262 4162 AGING 1L 135C 2613P Entering sbAgingTB(): curTime=1116
23:59:42.262 4163 AGING 2L 135C 2613P Entering sbAgingOneTable(): curTime=1116, ltblid= 1798080
23:59:42.262 4164 AGING 2L 135C 2613P Exiting sbAgingOneTable(): curTime=1116, reason = 'no more qualified rows found', 0 deleted, 0 remaining, tbl = ORACLE.TBAGING
23:59:42.262 4165 AGING 1L 135C 2613P Exiting sbAgingTB(): curTime=1116
23:59:42.262 4166 AGING 1L 135C 2613P Entering sbAgingLRU(): curTime=1116, minAccessCounter=1089
23:59:42.262 4167 AGING 1L 135C 2613P Exiting sbAgingLRU(): curTime=1116, minAccessCounter=1089, permRatio=0.236157, highMemThreshold=0.300000
00:00:42.359 4168 AGING 1L 135C 2613P Entering sbAgingTB(): curTime=1117
00:00:42.359 4169 AGING 2L 135C 2613P Entering sbAgingOneTable(): curTime=1117, ltblid= 1798080
00:00:42.359 4170 AGING 2L 135C 2613P Exiting sbAgingOneTable(): curTime=1117, reason = 'no more qualified rows found', 0 deleted, 0 remaining, tbl = ORACLE.TBAGING
00:00:42.359 4171 AGING 1L 135C 2613P Exiting sbAgingTB(): curTime=1117
00:00:42.359 4172 AGING 1L 135C 2613P Entering sbAgingLRU(): curTime=1117, minAccessCounter=1089
00:00:42.359 4173 AGING 1L 135C 2613P Exiting sbAgingLRU(): curTime=1117, minAccessCounter=1089, permRatio=0.236157, highMemThreshold=0.300000
00:01:42.417 4174 AGING 1L 135C 2613P Entering sbAgingTB(): curTime=1118
00:01:42.417 4175 AGING 2L 135C 2613P Entering sbAgingOneTable(): curTime=1118, ltblid= 1798080
00:01:42.417 4176 AGING 2L 135C 2613P Exiting sbAgingOneTable(): curTime=1118, reason = 'no more qualified rows found', 0 deleted, 0 remaining, tbl = ORACLE.TBAGING
00:01:42.417 4177 AGING 1L 135C 2613P Exiting sbAgingTB(): curTime=1118
00:01:42.417 4178 AGING 1L 135C 2613P Entering sbAgingLRU(): curTime=1118, minAccessCounter=1089
00:01:42.417 4179 AGING 1L 135C 2613P Exiting sbAgingLRU(): curTime=1118, minAccessCounter=1089, permRatio=0.236157, highMemThreshold=0.300000
00:02:42.453 4180 AGING 1L 135C 2613P Entering sbAgingTB(): curTime=1119
00:02:42.453 4181 AGING 2L 135C 2613P Entering sbAgingOneTable(): curTime=1119, ltblid= 1798080
00:02:42.453 4182 AGING 2L 135C 2613P Exiting sbAgingOneTable(): curTime=1119, reason = 'no more qualified rows found', 0 deleted, 0 remaining, tbl = ORACLE.TBAGING
00:02:42.453 4183 AGING 1L 135C 2613P Exiting sbAgingTB(): curTime=1119
00:02:42.453 4184 AGING 1L 135C 2613P Entering sbAgingLRU(): curTime=1119, minAccessCounter=1089
00:02:42.453 4185 AGING 1L 135C 2613P Exiting sbAgingLRU(): curTime=1119, minAccessCounter=1089, permRatio=0.236157, highMemThreshold=0.300000
00:03:42.496 4186 AGING 1L 135C 2613P Entering sbAgingTB(): curTime=1120
00:03:42.496 4187 AGING 2L 135C 2613P Entering sbAgingOneTable(): curTime=1120, ltblid= 1798080
00:03:42.496 4188 AGING 2L 135C 2613P Exiting sbAgingOneTable(): curTime=1120, reason = 'no more qualified rows found', 0 deleted, 0 remaining, tbl = ORACLE.TBAGING
00:03:42.496 4189 AGING 1L 135C 2613P Exiting sbAgingTB(): curTime=1120
00:03:42.496 4190 AGING 1L 135C 2613P Entering sbAgingLRU(): curTime=1120, minAccessCounter=1089
00:03:42.496 4191 AGING 1L 135C 2613P Exiting sbAgingLRU(): curTime=1120, minAccessCounter=1089, permRatio=0.236157, highMemThreshold=0.300000
00:04:42.549 4192 AGING 1L 135C 2613P Entering sbAgingTB(): curTime=1121
00:04:42.549 4193 AGING 2L 135C 2613P Entering sbAgingOneTable(): curTime=1121, ltblid= 1798080
00:04:42.549 4194 AGING 2L 135C 2613P Exiting sbAgingOneTable(): curTime=1121, reason = 'no more qualified rows found', 0 deleted, 0 remaining, tbl = ORACLE.TBAGING
00:04:42.549 4195 AGING 1L 135C 2613P Exiting sbAgingTB(): curTime=1121
00:04:42.549 4196 AGING 1L 135C 2613P Entering sbAgingLRU(): curTime=1121, minAccessCounter=1089
00:04:42.549 4197 AGING 1L 135C 2613P Exiting sbAgingLRU(): curTime=1121, minAccessCounter=1089, permRatio=0.236157, highMemThreshold=0.300000
05:17:50.750 4198 AUTOREFRESH 1L 9C 3938P Autorefresh number 1197 started for interval 5000ms
05:17:50.806 4199 AUTOREFRESH 1L 9C 3938P Duration For Interval 5000ms: 50ms
05:17:50.806 4200 AUTOREFRESH 1L 9C 3938P Num Rows For Interval 5000ms: 0
05:17:50.806 4201 AUTOREFRESH 1L 9C 3938P Num Root Rows For Interval 5000ms: 0
05:17:50.806 4202 AUTOREFRESH 1L 9C 3938P Cumulative Rows for Interval 5000ms: 2906
05:17:50.806 4203 AUTOREFRESH 1L 9C 3938P Cumulative Root Rows for Interval 5000ms: 2905
05:17:50.806 4204 AUTOREFRESH 1L 9C 3938P Autorefresh number 1197 ended for interval 5000ms successfully.
05:17:51.539 4205 AUTOREFRESH 1L 8C 3938P ReplDDSRec Start Finished: ds: cachedb1_1122, dsstat: alive, chg: 04/21/16 02:46:43 +00:00, hb: 04/21/16 12:17:46 +00:00, cg: CACHEADM.RO, tbl: TTHR.ORDERS, id: 87139:1, tblstat: ok, bk: 815, rec: -1, log: 815
109 records dumped
Trace> trace level 4时的输出，注意其中的autorefresh Query
Trace> level autorefresh 4
Trace> dump05:20:25.984 4641 AUTOREFRESH 3L 9C 3938P Incremental autorefresh started for table TTHR.ORDERS. soLog(845), eoLog(846) selectLimit(0) upperBound(:u34).
05:20:25.984 4642 AUTOREFRESH 4L 9C 3938P Autorefresh Query: SELECT L."ORD_NUM", X."SHIP_TIME", X.ft$NotDelete FROM (SELECT DISTINCT "ORD_NUM" FROM "CACHEADM"."TT_06_87139_L" WHERE logseq > :logseq AND ft_cacheGroup <> 100000000000*418939754+1237845634) L, (SELECT "TTHR"."ORDERS"."ORD_NUM", "TTHR"."ORDERS"."SHIP_TIME", 1 AS ft$NotDelete FROM "TTHR"."ORDERS") X WHERE L."ORD_NUM" = X."ORD_NUM" (+), logseq: 845, selectLimit: 0, upperBound �:u34
05:20:25.987 4643 AUTOREFRESH 3L 9C 3938P Duration for table TTHR.ORDERS: 0ms
05:20:25.987 4644 AUTOREFRESH 3L 9C 3938P Num Rows for table TTHR.ORDERS: 4
05:20:25.987 4645 AUTOREFRESH 3L 9C 3938P Cumulative rows for table TTHR.ORDERS: 3029
05:20:25.987 4646 AUTOREFRESH 4L 9C 3938P Autorefresh Query Execute duration for table TTHR.ORDERS: 0ms
05:20:25.987 4647 AUTOREFRESH 4L 9C 3938P Autorefresh Query Fetch duration for table TTHR.ORDERS: 0ms
05:20:25.987 4648 AUTOREFRESH 4L 9C 3938P Autorefresh Query Apply duration for table TTHR.ORDERS: 0ms
05:20:25.987 4649 AUTOREFRESH 4L 9C 3938P Max logseq applied for table TTHR.ORDERS: 846
05:20:25.987 4650 AUTOREFRESH 3L 9C 3938P Incremental autorefresh ended for table TTHR.ORDERS. soLog(845), eoLog(846) selectLimit(0) upperbound(:u34).
由于此命令非常消耗资源，使用后应将 trace级别设回缺省。
Trace> show autorefresh
AUTOREFRESH ... 4
Trace> level autorefresh 0
Trace> quit
使用 SNMP traps 来报警auto refresh相关问题
与auto refresh相关的trap如下：
- ttCacheAutoRefQueFullTrap
- ttCacheIncAutoRefFailedTrap
- ttCacheValidationErrorTrap
- ttCacheValidationWarnTrap
- ttCacheValidationAbortedTrap
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