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DB2查看执行过长的SQL

2022-08-04 10:47:00 【51CTO】

朋友遇到一个DB2问题，DB2占用了大量的临时表空间，db2pd -d testdb -act发现有大量的SQL长时间运行，为了测试该问题，写了一个简单的处理问题的流程。
1.创建测试表

       
       CREATE TABLE
       
    FUND_DAILY_INCOME
       
    (
       
        ID BIGINT NOT NULL GENERATED ALWAYS AS IDENTITY,
       
        ACCOUNT_NO VARCHAR(32),
       
        CREATED_TIME TIMESTAMP,
       
        FUND_CODE VARCHAR(8),
       
        SHARE_HOLDING VARCHAR(15),
       
        INCOME_DATE VARCHAR(10),
       
        INCOME_AMOUNT BIGINT,
       
        MERGE_FLAG VARCHAR(1),
       
        OFFSET_FLAG VARCHAR(1),
       
        UPDATE_TIME TIMESTAMP,
       
        COMPANY_CODE VARCHAR(16),
       
        ALL_INCOME DECIMAL(19,0) DEFAULT 0,
       
        HOLDING_INCOME DECIMAL(19,0) DEFAULT 0,
       
        PLAT_ID BIGINT DEFAULT 10000,
       
        SERVICE_TYPE VARCHAR(2) DEFAULT '01',
       
        SERVICE_CODE VARCHAR(32) DEFAULT '10000',
       
        PRIMARY KEY (ID)
       
    );
      
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2.创建测试存储过程

       
       [[email protected] ~]$ db2 [email protected] -vf 1.sql
       
[[email protected] ~]$ cat 1.sql 
       
BEGIN   
       
   DECLARE v_date  date;
       
   DECLARE v_date_str varchar(20);
       
   DECLARE str varchar(20);
       
   DECLARE i  INTEGER;
       
   DECLARE val  INTEGER;
       
   declare    sqlStr   varchar(1000);
       
   set  v_date = to_date( '2014-01-01' ,'yyyy-mm-dd');
       
   set v_date_str =  to_char( v_date ,'yyyy-mm-dd') ;
       
   REPEAT
       
              set i = 1 ;
       
              REPEAT      
       
               SET sqlStr =' INSERT INTO FUND_DAILY_INCOME (  ACCOUNT_NO, CREATED_TIME,  FUND_CODE, SHARE_HOLDING, INCOME_DATE,  INCOME_AMOUNT, MERGE_FLAG, OFFSET_FLAG, UPDATE_TIME, COMPANY_CODE  ) VALUES '
       
               ||  '  (  ''1'', current timestamp , ''1'', ''1'',  '''||  v_date_str ||''' , 0, ''1'', ''1'', current timestamp , ''1'' ) ';
       
               EXECUTE IMMEDIATE sqlStr;   
       
               set i = i +1;
       
               UNTIL ( i > 1010000000)
       
               END REPEAT;
       
       set v_date =   v_date +1 day;
       
       set v_date_str = to_char( v_date ,'yyyy-mm-dd');
       
       set str =  to_char( v_date ,'yyyymmdd');
       
       set val = integer(str);
       
   UNTIL ( val > 20150101)
       
   END REPEAT;
       
END
       
@
      
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3.查看正在执行的SQL

       
       [[email protected] ~]$ db2pd -d testdb -act
       
Database Member 0 -- Database TESTDB -- Active -- Up 0 days 00:34:45 -- Date 2021-10-12-16.32.27.821453
       
Active Statement List:
       
Address            AppHandl [nod-index] UOW-ID     StmtID     AnchID StmtUID    EffISO      EffLockTOut EffDegree   EntryTime           StartTime           LastRefTime        
       
0x00007FCBE1F7BC20 7        [000-00007] 58         90956      573    2          1           -1          1           Tue Oct 12 16:32:27 Tue Oct 12 16:32:27 Tue Oct 12 16:32:27
       
0x00007FCBE1F7F6C0 7        [000-00007] 58         1          931    1          1           -1          1           Tue Oct 12 16:32:20 Tue Oct 12 16:32:20 Tue Oct 12 16:32:20
      
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4.查看agentid为7的SQL

       
       [[email protected] ~]$ db2 get snapshot for application agentid 7
       
            Application Snapshot
       
Application handle                         = 7
       
Application status                         = UOW Waiting
       
Status change time                         = Not Collected
       
Application code page                      = 1208
       
Application country/region code            = 1
       
DUOW correlation token                     = *LOCAL.db2inst1.211012075742
       
Application name                           = db2bp
       
Application ID                             = *LOCAL.db2inst1.211012075742
       
Sequence number                            = 00059
       
TP Monitor client user ID                  =
       
TP Monitor client workstation name         =
       
TP Monitor client application name         = CLP 1.sql
       
TP Monitor client accounting string        =
       
Connection request start timestamp         = 10/12/2021 15:57:42.602917
       
Connect request completion timestamp       = 10/12/2021 15:57:43.809901
       
Application idle time                      = Not Collected
       
CONNECT Authorization ID                   = DB2INST1
       
Client login ID                            = db2inst1
       
Configuration NNAME of client              = node02
       
Client database manager product ID         = SQL11014
       
Process ID of client application           = 4224
       
Platform of client application             = LINUXAMD64
       
Communication protocol of client           = Local Client
       
Inbound communication address              = *LOCAL.db2inst1
       
Database name                              = TESTDB
       
Database path                              = /db2data/db2inst1/NODE0000/SQL00001/MEMBER0000/
       
Client database alias                      = TESTDB
       
Input database alias                       =
       
Last reset timestamp                       =
       
Snapshot timestamp                         = 10/12/2021 16:32:44.043410
       
Authorization level granted                =
       
   User authority:
       
      DBADM authority
       
      SECADM authority
       
      DATAACCESS authority
       
      ACCESSCTRL authority
       
   Group authority:
       
      SYSADM authority
       
      CREATETAB authority
       
      BINDADD authority
       
      CONNECT authority
       
      IMPLICIT_SCHEMA authority
       
Coordinator member number                  = 0
       
Current member number                      = 0
       
Coordinator agent process or thread ID     = 23
       
Current Workload ID                        = 1
       
Agents stolen                              = 0
       
Agents waiting on locks                    = 0
       
Maximum associated agents                  = 1
       
Priority at which application agents work  = 0
       
Priority type                              = Dynamic
       
Lock timeout (seconds)                     = -1
       
Locks held by application                  = 0
       
Lock waits since connect                   = 0
       
Time application waited on locks (ms)      = Not Collected
       
Deadlocks detected                         = Not Collected
       
Lock escalations                           = 0
       
Exclusive lock escalations                 = 0
       
Number of Lock Timeouts since connected    = 0
       
Total time UOW waited on locks (ms)        = Not Collected
       
Total sorts                                = 0
       
Total sort time (ms)                       = Not Collected
       
Total sort overflows                       = 0
       
Buffer pool data logical reads             = Not Collected
       
Buffer pool data physical reads            = Not Collected
       
Buffer pool temporary data logical reads   = Not Collected
       
Buffer pool temporary data physical reads  = Not Collected
       
Buffer pool data writes                    = Not Collected
       
Buffer pool index logical reads            = Not Collected
       
Buffer pool index physical reads           = Not Collected
       
Buffer pool temporary index logical reads  = Not Collected
       
Buffer pool temporary index physical reads = Not Collected
       
Buffer pool index writes                   = Not Collected
       
Buffer pool xda logical reads              = Not Collected
       
Buffer pool xda physical reads             = Not Collected
       
Buffer pool temporary xda logical reads    = Not Collected
       
Buffer pool temporary xda physical reads   = Not Collected
       
Buffer pool xda writes                     = Not Collected
       
Total buffer pool read time (milliseconds) = Not Collected
       
Total buffer pool write time (milliseconds)= Not Collected
       
Time waited for prefetch (ms)              = Not Collected
       
Unread prefetch pages                      = Not Collected
       
Direct reads                               = Not Collected
       
Direct writes                              = Not Collected
       
Direct read requests                       = Not Collected
       
Direct write requests                      = Not Collected
       
Direct reads elapsed time (ms)             = Not Collected
       
Direct write elapsed time (ms)             = Not Collected
       
Number of SQL requests since last commit   = 0
       
Commit statements                          = 3
       
Rollback statements                        = 55
       
Dynamic SQL statements attempted           = 236518
       
Static SQL statements attempted            = 58
       
Failed statement operations                = 56
       
Select SQL statements executed             = 1
       
Xquery statements executed                 = 0
       
Update/Insert/Delete statements executed   = 236460
       
DDL statements executed                    = 1
       
Inactive stmt history memory usage (bytes) = 0
       
Internal automatic rebinds                 = 0
       
Internal rows deleted                      = 0
       
Internal rows inserted                     = 0
       
Internal rows updated                      = 0
       
Internal commits                           = 1
       
Internal rollbacks                         = 0
       
Internal rollbacks due to deadlock         = 0
       
Binds/precompiles attempted                = 0
       
Rows deleted                               = 0
       
Rows inserted                              = 236459
       
Rows updated                               = 0
       
Rows selected                              = 1
       
Rows read                                  = 12537
       
Rows written                               = 236466
       
UOW log space used (Bytes)                 = Not Collected
       
Previous UOW completion timestamp          = Not Collected
       
Elapsed time of last completed uow (sec.ms)= Not Collected
       
UOW start timestamp                        = Not Collected
       
UOW stop timestamp                         = Not Collected
       
UOW completion status                      = Not Collected
       
Open remote cursors                        = 0
       
Open remote cursors with blocking          = 0
       
Rejected Block Remote Cursor requests      = 0
       
Accepted Block Remote Cursor requests      = 1
       
Open local cursors                         = 0
       
Open local cursors with blocking           = 0
       
Total User CPU Time used by agent (s)      = 4.522643
       
Total System CPU Time used by agent (s)    = 0.000000
       
Host execution elapsed time                = Not Collected
       
Package cache lookups                      = 236521
       
Package cache inserts                      = 374
       
Application section lookups                = 474448
       
Application section inserts                = 371
       
Catalog cache lookups                      = 3363
       
Catalog cache inserts                      = 42
       
Catalog cache overflows                    = 0
       
Catalog cache high water mark              = 0
       
Workspace Information
       
Most recent operation                      = Static Rollback
       
Most recent operation start timestamp      = Not Collected
       
Most recent operation stop timestamp       = Not Collected
       
Agents associated with the application     = 1
       
Number of hash joins                       = 0
       
Number of hash loops                       = 0
       
Number of hash join overflows              = 0
       
Number of small hash join overflows        = 0
       
Number of OLAP functions                   = 0
       
Number of OLAP function overflows          = 0
       
Memory usage for application:
       
  Memory Pool Type                         = Application Heap
       
     Current size (bytes)                  = 262144
       
     High water mark (bytes)               = 262144
       
     Configured size (bytes)               = 1048576
       
Agent process/thread ID                    = 23
       
  Agent Lock timeout (seconds)             = -1
       
  Memory usage for agent:
       
    Memory Pool Type                       = Other Memory
       
       Current size (bytes)                = 327680
       
       High water mark (bytes)             = 655360
       
       Configured size (bytes)             = 16656289792
      
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6.收集快照

       
       [[email protected] ~]$ db2 get snapshot for all on testdb > /tmp/1.out
       
查看里面的内容
       
Application handle                         = 7
       
Application status                         = UOW Executing
       
Status change time                         = Not Collected
       
Application code page                      = 1208
       
Application country/region code            = 1
       
DUOW correlation token                     = *LOCAL.db2inst1.211012084818
       
Application name                           = db2bp
       
Application ID                             = *LOCAL.db2inst1.211012084818
       
Sequence number                            = 00002
       
TP Monitor client user ID                  =
       
TP Monitor client workstation name         =
       
TP Monitor client application name         = CLP 1.sql
       
TP Monitor client accounting string        =
      
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7.force掉该agentid

       
       [[email protected] ~]$ db2 "force application (7)"
       
DB20000I  The FORCE APPLICATION command completed successfully.
       
DB21024I  This command is asynchronous and may not be effective immediately.
       
[[email protected] ~]$ db2 terminate
       
DB20000I  The TERMINATE command completed successfully.
      
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DB2

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版权声明
本文为[51CTO]所创，转载请带上原文链接，感谢
https://blog.51cto.com/u_15735145/5542907

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