使用ttXactAdmin、ttSQLCmdCacheInfo、ttSQLCmdQueryPlan获取SQL相关具体信息[TimesTen运维]

使用ttXactAdmin、ttSQLCmdCacheInfo、ttSQLCmdQueryPlan获取SQL相关具体信息，适合于tt11以上版本号。

$ ttversion

TimesTen Release 11.2.2.4.3 (64 bit Linux/x86_64) (tt1122:53396) 2013-02-09T17:19:52Z

Instance admin: timesten

Instance home directory: /TimesTen/tt1122

Group owner: timesten

Daemon home directory: /TimesTen/tt1122/info

PL/SQL enabled.

Command> create table ty(tid tt_smallint,tname varchar2(20));

Command> set autocommit 0;

Command> insert into ty values(1,'tangyun');

1 row inserted.

---使用ttxactadmin查看未提交的事务相关信息

Command> host ttxactadmin tytt

2014-06-14 15:58:30.301

/ttchk/DataStore/11g/TYTT/TYTTdata

TimesTen Release 11.2.2.4.3

Outstanding locks

PID Context TransID TransStatus Resource ResourceID Mode SqlCmdID Name

Program File Name: ttIsqlCmd

3473 0x14a82610 1.5 Active Database 0x01312d0001312d00 IX 0

Row BMUFVUAAABoAAAAAAO Xn
135710768 TIMESTEN.TY

Table 1732208 IXn
135710768 TIMESTEN.TY

1 outstanding transaction found

---上面插入一行记录能够看到Database的IX锁和table的IXn和Row的Xn锁信息。

---关于TimesTen的IX锁，能够參考：
http://blog.itpub.net/24930246/viewspace-1183227/ http://blog.csdn.net/tangyun_/article/details/30902729
这个时候假设对表进行DDL。将会超时退出

Command> alter table ty add tdept varchar2(20);

6003: Lock request denied because of time-out

Details: Tran 2.8 (pid 3604) wants X lock on table TIMESTEN.TY. But tran 1.5 (pid 3473) has it in IXn (request was IXn). Holder SQL (insert into ty values(1,'tangyun'))

The command failed.

----以下获取SQL信息

Command> call ttsqlcmdcacheinfo(135710768);

< 135710768, 2048, 1, 1, 0, 1, 1640, TIMESTEN , insert into ty values(1,'tangyun') >

1 row found.

Command> call ttsqlcmdqueryplan(135710768);

< 135710768, insert into ty values(1,'tangyun'), <NULL>, <NULL>, <NULL>, <NULL>, <NULL>, <NULL>, <NULL>, <NULL> >

< 135710768, <NULL>, 1, 1, Insert , TY , TIMESTEN , , , >

2 rows found.

Command> vertical 1;

Command> call ttsqlcmdcacheinfo(135710768);

SQLCMDID: 135710768

PRIVATE_COMMAND_CONNECTION_ID: 2048

EXECUTIONS: 1

PREPARES: 1

REPREPARES: 0

FREEABLE: 1

SIZE: 1640

OWNER: TIMESTEN

QUERYTEXT: insert into ty values(1,'tangyun')

1 row found.

Command> call ttsqlcmdqueryplan(135710768);

SQLCMDID: 135710768

QUERYTEXT: insert into ty values(1,'tangyun')

STEP: <NULL>

LEVEL: <NULL>

OPERATION: <NULL>

TABLENAME: <NULL>

TABLEOWNERNAME: <NULL>

INDEXNAME: <NULL>

INDEXEDPRED: <NULL>

NONINDEXEDPRED: <NULL>

SQLCMDID: 135710768

QUERYTEXT: <NULL>

STEP: 1

LEVEL: 1

OPERATION: Insert

TABLENAME: TY

TABLEOWNERNAME: TIMESTEN

INDEXNAME:

INDEXEDPRED:

NONINDEXEDPRED:

2 rows found.

Command>

----提交后。锁的信息将不存在。

Command> commit;

Command> host ttxactadmin tytt

2014-06-14 16:00:13.051

/ttchk/DataStore/11g/TYTT/TYTTdata

TimesTen Release 11.2.2.4.3

0 outstanding transactions found

Command>

----还能够使用 explain plan for sqlcmdid 查看对应的运行计划

Command> explain plan for sqlcmdid 135710768;

Query Optimizer Plan:

Query Text: insert into ty values(1,'tangyun')

STEP: 1

LEVEL: 1

OPERATION: Insert

TABLENAME: TY

TABLEOWNERNAME: TIMESTEN

INDEXNAME:

INDEXEDPRED:

NONINDEXEDPRED:

Command>

也能够使用showplan命令，然后运行SQL以显示对应的运行计划。

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