goldengate 长事物处理方法
1、ggserr.log中提示长事物警告
2018-06-02 20:41:30 INFO OGG-01021 Oracle GoldenGate Capture for Oracle, eora_1.prm: Command received from GGSCI: showtrans thread 1 count 10.
2018-06-02 20:41:30 WARNING OGG-01742 Oracle GoldenGate Command Interpreter for Oracle: Command sent to EXTRACT EORA_1 returned with an ERROR response.
2018-06-02 20:41:36 WARNING OGG-01027 Oracle GoldenGate Capture for Oracle, eora_1.prm: Long Running Transaction: XID 8.32.5482, Items 1, Extract EORA_1, Redo Thread 1, SCN 0.23340272 (23340272), Redo Seq #37, Redo RBA 33959952.2、查询抽取进程EORA_1的参数配置
GGSCI (qxy.localdomain) 169> edit params EORA_1
-- Change Capture parameter file to capture
-- user1 and user2 changes
EXTRACT EORA_1
SETENV(NLS_LANG= AMERICAN_AMERICA.ZHS16GBK)
USERID ogg, PASSWORD tiger
TRANLOGOPTIONS EXCLUDEUSER ogg
reportcount every 120 minutes, rate
report at 01:00
reportrollover at 01:15
threadoptions maxcommitpropagationdelay 30000
discardfile ./dirrpt/eora_1.dsc, append megabytes 100
discardrollover at 01:15
warnlongtrans 1m, checkinterval 1m
EXTTRAIL ./dirdat/aa
--ddl include all
--ddloptions addtrandata, report
TABLE scott.user1;
TABLE soctt.user2;
因为是为了测试，这里把warnlongtrans、checkinterval均设置为1分钟
3、查询长事物
select a.sid,
a.serial#,
a.user#,
a.username,
b.addr,
b.USED_UBLK,
b.USED_UREC,
b.START_TIME,
b.xidusn,
b.XIDSLOT,
b.xidsqn
from v$transaction b, v$session a
where /*b.addr in (select a.taddr from v$session a where a.sid = '') and*/ b.addr=a.taddr order by start_time
SID SERIAL# USER# USERNAME ADDR USED_UBLK USED_UREC START_TIME XIDUSN XIDSLOT XIDSQN
---------- ---------- ---------- ---------- ---------------- ---------- ---------- -------------------- ---------- ---------- ----------
159 51 83 SCOTT 000000008BD1E698 1 1 06/02/18 19:55:24 8 32 和ggserr日志中的信息一致。
4、使用ggsci命令检查长事物
GGSCI (qxy.localdomain) 170> info eora_1,showtrans
ERROR: SHOWTRANS is not a valid option.
GGSCI (qxy.localdomain) 171> info eora_1, showch
EXTRACT EORA_1 Last Started 2018-06-02 20:09 Status RUNNING
Checkpoint Lag 00:00:00 (updated 00:00:01 ago)
Process ID 5414
Log Read Checkpoint Oracle Redo Logs
2018-06-02 20:37:51 Seqno 46, RBA 67072
SCN 0.23341984 (23341984)
Current Checkpoint Detail:
Read Checkpoint #1
Oracle Redo Log
Startup Checkpoint (starting position in the data source):
Thread #: 1
Sequence #: 37
RBA: 33953296
Timestamp: 2018-06-02 19:54:47.000000
SCN: 0.23340252 (23340252)
Redo File: /u01/app/oradata/QXY/redo01.log
Recovery Checkpoint (position of oldest unprocessed transaction in the data source):
Thread #: 1
Sequence #: 37
RBA: 33959952
Timestamp: 2018-06-02 19:55:26.000000
SCN: 0.23340272 (23340272)
Redo File: Not Available
Current Checkpoint (position of last record read in the data source):
Thread #: 1
Sequence #: 46
RBA: 67072
Timestamp: 2018-06-02 20:37:51.000000
SCN: 0.23341984 (23341984)
Redo File: /u01/app/oradata/QXY/redo01.log
BR Previous Recovery Checkpoint:
Thread #: 0
Sequence #: 0
RBA: 0
Timestamp: 2018-05-31 12:51:16.738698
SCN: Not available
Redo File:
BR Begin Recovery Checkpoint:
Thread #: 1
Sequence #: 21
RBA: 18945536
Timestamp: 2018-05-31 16:50:36.000000
SCN: 0.21754129 (21754129)
Redo File:
BR End Recovery Checkpoint:
Thread #: 1
Sequence #: 21
RBA: 18945536
Timestamp: 2018-05-31 16:50:36.000000
SCN: 0.21754129 (21754129)
Redo File:
Write Checkpoint #1
GGS Log Trail
Current Checkpoint (current write position):
Sequence #: 29
RBA: 1595
Timestamp: 2018-06-02 20:38:46.385699
Extract Trail: ./dirdat/aa
Trail Type: EXTTRAIL
Header:
Version = 2
Record Source = A
Type = 10
# Input Checkpoints = 1
# Output Checkpoints = 1
File Information:
Block Size = 2048
Max Blocks = 100
Record Length = 2048
Current Offset = 0
Configuration:
Data Source = 3
Transaction Integrity = 1
Task Type = 0
Status:
Start Time = 2018-06-02 20:09:20
Last Update Time = 2018-06-02 20:38:46
Stop Status = A
Last Result = 400
GGSCI (qxy.localdomain) 172>
如果 current checkpoint 和Recovery Checkpoint 不一致，说明存在长事物
GGSCI (qxy.localdomain) 176> send extract eora_1 ,showtrans count 10
Sending showtrans request to EXTRACT EORA_1 ...
Oldest redo log file necessary to restart Extract is:
Redo Log Sequence Number 37, RBA 33959952
------------------------------------------------------------
XID: 8.32.5482
Items: 1
Extract: EORA_1
Redo Thread: 1
Start Time: 2018-06-02:19:55:26
SCN: 0.23340272 (23340272)
Redo Seq: 37
Redo RBA: 33959952
Status: Running
GGSCI (qxy.localdomain) 177> 4、查询事物的发起时间、状态，判断是否可以回滚或者提交
select t.start_time, t.xidusn||'.'||t.xidslot||'.'||t.xidsqn xid, s.status,
s.sid,s.serial#,s.username,s.status,s.schemaname,
decode(s.sql_id,null,s.prev_sql_id) sqlid, decode(s.sql_child_number,null,s.prev_child_number) child
from v$transaction t, v$session s
where s.saddr = t.ses_addr
order by t.start_time
START_TIME XID STATUS SID SERIAL# USERNAME STATUS SCHEMANAME SQLID CHILD
-------------------- ---------- -------- ---------- ---------- ---------- -------- ------------------------------ ------------- ----------
06/02/18 19:55:24 8.32.5482 INACTIVE 159 51 SCOTT INACTIVE SCOTT g73njsp71rfb0 0
5、其他处理办法
send extract ,skiptrans跳过事务（不建议）
SEND EXTRACT <进程名>, SKIPTRANS <5.17.27634> THREAD <2> //跳过交易
send extract ,forcetrans强制认为事务已经提交（不建议）
SEND EXTRACT <进程名>, FORCETRANS <5.17.27634> THREAD <1> //强制认为该交易已经提交
建议在数据库层提交或者回滚 6、强制跳过事物
GGSCI (qxy.localdomain) 183> SEND EXTRACT EORA_1,SKIPTRANS 8.32.5482
Sending SKIPTRANS request to EXTRACT EORA_1 ...
Are you sure you sure you want to skip transaction [XID 8.32.5482, Redo Thread 1, Start Time 2018-06-02:19:55:26, SCN 0.23340272 (23340272)]? (y/n)y
Sending SKIPTRANS request to EXTRACT EORA_1 ...
Transaction [XID 8.32.5482, Redo Thread 1, Start Time 2018-06-02:19:55:26, SCN 0.23340272 (23340272)] skipped.
GGSCI (qxy.localdomain) 184>