DB2 如何获得存储过程对应的包中的执行计划
2015-06-22 08:55
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编写一个 shell 脚本,可以直接根据 存储过程名字来查看执行计划.
vi ck_proc_expln.sh
### ck_proc_expln.sh
# 将第1个 输入参数 的值,赋予 base_dir,用于shell 执行的 根目录
base_dir=${1}
# 将第2个 输入参数 的值,赋予 v_proc_schema,用于 存储 存储过程的模式名
v_proc_schema=${2}
# 将第3个 输入参数 的值,赋予 v_proc_name,用于 存储 存储过程的名字
v_proc_name=${3}
# 设置数据库名
database_name=testdb
# 连接数据库.
db2 +o "connect to ${database_name}"
# 根据存储过程名获取数据库中对应的包名.
packe_name_tmp=`db2 -x "select substr(b.bname,1,40) package_name from syscat.procedures a,syscat.routinedep b where a.specificname = b.routinename and procschema=upper('${v_proc_schema}') and procname=upper('${v_proc_name}') and b.btype='K'"`
packe_name=`echo ${packe_name_tmp}`
echo ""
# 断开数据库.
db2 +o "terminate"
# 查看存储过程对应的包中的执行计划
db2expln -d ${database_name} -g -c ${v_proc_schema} -p ${packe_name} -s 0 -t
# 调用例子:
# ./ck_proc_expln.sh /home/db2inst1 db2inst1 proc_get_app_handle
# 第1个 参数为shell 执行的 根目录
# 第2个 参数为存储过程的模式名
# 第3个 参数为存储过程的名字
[db2inst1@db2-005 ~]$ ./ck_proc_expln.sh /home/db2inst1 db2inst1 proc_get_app_handle
DB2 Universal Database Version 10.1, 5622-044 (c) Copyright IBM Corp. 1991, 2011
Licensed Material - Program Property of IBM
IBM DB2 Universal Database SQL and XQUERY Explain Tool
******************** PACKAGE ***************************************
Package Name = "DB2INST1"."P1120771772" Version = ""
Prep Date = 2015/01/15
Prep Time = 21:20:54
Bind Timestamp = 2015-01-15-21.20.54.456606
Isolation Level = Cursor Stability
Blocking = Block Unambiguous Cursors
Query Optimization Class = 5
Partition Parallel = No
Intra-Partition Parallel = No
SQL Path = "SYSIBM", "SYSFUN", "SYSPROC", "SYSIBMADM",
"DB2INST1"
-------------------- SECTION ---------------------------------------
Section = 1
Statement:
select APPLICATION_HANDLE, APPLICATION_NAME into :HV00009 :HI00009 ,
:HV00010 :HI00010
from SYSIBMADM.MON_CURRENT_SQL
where ACTIVITY_TYPE='CALL' and LOCATE(UPPER(:HV00008 :HI00008 ),
UPPER(STMT_TEXT))> 0 and LOCATE(UPPER(:HV00012 :HI00012 ),
UPPER(STMT_TEXT))=0
Section Code Page = 1208
Estimated Cost = 1.299523
Estimated Cardinality = 0.003495
Access User Defined Table Function
| Name = SYSPROC.MON_GET
| Specific Name = MON_GET_PKG_CACHE_STMT
| SQL Access Level = No SQL
| Language = C
| Parameter Style =
ERROR -- Unknown Parameter Style (9)
| Not Fenced Not Deterministic
| Called on NULL Input Disallow Parallel
| Threadsafe Secured
| #Columns = 3
| May participate in Scan Sharing structures
| Scan may start anywhere and wrap, for completion
| Scan can be throttled in scan sharing management
| Relation Scan
| | Prefetch: Eligible
| Residual Predicate(s)
| | #Predicates = 2
Hash Join
| Estimated Build Size: 4000
| Estimated Probe Size: 4000
| Access User Defined Table Function
| | Name = SYSPROC.WLM_GET
| | Specific Name = WLM_GET_WORKLOAD_OCCURRENCE_ACTIVITIES
| | SQL Access Level = No SQL
| | Language = C
| | Parameter Style =
ERROR -- Unknown Parameter Style (9)
| | Not Fenced Not Deterministic
| | Called on NULL Input Disallow Parallel
| | Threadsafe Secured
| | #Columns = 6
| | May participate in Scan Sharing structures
| | Scan may start anywhere and wrap, for completion
| | Scan can be throttled in scan sharing management
| | Relation Scan
| | | Prefetch: Eligible
| | Residual Predicate(s)
| | | #Predicates = 1
Hash Join
| Early Out: Single Match Per Inner Row
| Estimated Build Size: 4000
| Estimated Probe Size: 36000
| Bit Filter Size: 4096
| Access User Defined Table Function
| | Name = SYSPROC.WLM_GET
| | Specific Name = WLM_GET_WORKLOAD_OCCURRENCE_ACTIVITIES
| | SQL Access Level = No SQL
| | Language = C
| | Parameter Style =
ERROR -- Unknown Parameter Style (9)
| | Not Fenced Not Deterministic
| | Called on NULL Input Disallow Parallel
| | Threadsafe Secured
| | #Columns = 4
| | May participate in Scan Sharing structures
| | Scan may start anywhere and wrap, for completion
| | Fast scan, for purposes of scan sharing management
| | Scan can be throttled in scan sharing management
| | Relation Scan
| | | Prefetch: Eligible
| Insert Into Sorted Temp Table ID = t1
| | #Columns = 4
| | #Sort Key Columns = 3
| | | Key 1: (Ascending)
| | | Key 2: (Ascending)
| | | Key 3: (Ascending)
| | Sortheap Allocation Parameters:
| | | #Rows = 1000.000000
| | | Row Width = 28
| | Piped
| Access Temp Table ID = t1
| | #Columns = 4
| | Relation Scan
| | | Prefetch: Eligible
| | Sargable Predicate(s)
| | | Predicate Aggregation
| | | | Group By
| | | | Column Function(s)
| | | Process Probe Table for Hash Join
| Aggregation Completion
| | Group By
| | Column Function(s)
Hash Join
| Estimated Build Size: 4000
| Estimated Probe Size: 116000
| Bit Filter Size: 4096
| Access User Defined Table Function
| | Name = SYSPROC.MON_GET
| | Specific Name = MON_GET_CONNECTION
| | SQL Access Level = No SQL
| | Language = C
| | Parameter Style =
ERROR -- Unknown Parameter Style (9)
| | Not Fenced Not Deterministic
| | Called on NULL Input Disallow Parallel
| | Threadsafe Secured
| | #Columns = 3
| | May participate in Scan Sharing structures
| | Scan may start anywhere and wrap, for completion
| | Fast scan, for purposes of scan sharing management
| | Scan can be throttled in scan sharing management
| | Relation Scan
| | | Prefetch: Eligible
Return Data to Application
| #Columns = 2
End of section
Optimizer Plan:
Operator
(ID)
RETURN
( 1)
|
HSJOIN
( 2)
/ \
TBSCAN HSJOIN
( 3) ( 4)
| / \
TFunc: GRPBY HSJOIN
SYSPROC ( 5) ( 9)
MON_GET | / \
TBSCAN TBSCAN TBSCAN
( 6) (10) (11)
| | |
SORT TFunc: TFunc:
( 7) SYSPROC SYSPROC
| WLM_GET MON_GET
TBSCAN
( 8)
|
TFunc:
SYSPROC
WLM_GET
vi ck_proc_expln.sh
### ck_proc_expln.sh
# 将第1个 输入参数 的值,赋予 base_dir,用于shell 执行的 根目录
base_dir=${1}
# 将第2个 输入参数 的值,赋予 v_proc_schema,用于 存储 存储过程的模式名
v_proc_schema=${2}
# 将第3个 输入参数 的值,赋予 v_proc_name,用于 存储 存储过程的名字
v_proc_name=${3}
# 设置数据库名
database_name=testdb
# 连接数据库.
db2 +o "connect to ${database_name}"
# 根据存储过程名获取数据库中对应的包名.
packe_name_tmp=`db2 -x "select substr(b.bname,1,40) package_name from syscat.procedures a,syscat.routinedep b where a.specificname = b.routinename and procschema=upper('${v_proc_schema}') and procname=upper('${v_proc_name}') and b.btype='K'"`
packe_name=`echo ${packe_name_tmp}`
echo ""
# 断开数据库.
db2 +o "terminate"
# 查看存储过程对应的包中的执行计划
db2expln -d ${database_name} -g -c ${v_proc_schema} -p ${packe_name} -s 0 -t
# 调用例子:
# ./ck_proc_expln.sh /home/db2inst1 db2inst1 proc_get_app_handle
# 第1个 参数为shell 执行的 根目录
# 第2个 参数为存储过程的模式名
# 第3个 参数为存储过程的名字
[db2inst1@db2-005 ~]$ ./ck_proc_expln.sh /home/db2inst1 db2inst1 proc_get_app_handle
DB2 Universal Database Version 10.1, 5622-044 (c) Copyright IBM Corp. 1991, 2011
Licensed Material - Program Property of IBM
IBM DB2 Universal Database SQL and XQUERY Explain Tool
******************** PACKAGE ***************************************
Package Name = "DB2INST1"."P1120771772" Version = ""
Prep Date = 2015/01/15
Prep Time = 21:20:54
Bind Timestamp = 2015-01-15-21.20.54.456606
Isolation Level = Cursor Stability
Blocking = Block Unambiguous Cursors
Query Optimization Class = 5
Partition Parallel = No
Intra-Partition Parallel = No
SQL Path = "SYSIBM", "SYSFUN", "SYSPROC", "SYSIBMADM",
"DB2INST1"
-------------------- SECTION ---------------------------------------
Section = 1
Statement:
select APPLICATION_HANDLE, APPLICATION_NAME into :HV00009 :HI00009 ,
:HV00010 :HI00010
from SYSIBMADM.MON_CURRENT_SQL
where ACTIVITY_TYPE='CALL' and LOCATE(UPPER(:HV00008 :HI00008 ),
UPPER(STMT_TEXT))> 0 and LOCATE(UPPER(:HV00012 :HI00012 ),
UPPER(STMT_TEXT))=0
Section Code Page = 1208
Estimated Cost = 1.299523
Estimated Cardinality = 0.003495
Access User Defined Table Function
| Name = SYSPROC.MON_GET
| Specific Name = MON_GET_PKG_CACHE_STMT
| SQL Access Level = No SQL
| Language = C
| Parameter Style =
ERROR -- Unknown Parameter Style (9)
| Not Fenced Not Deterministic
| Called on NULL Input Disallow Parallel
| Threadsafe Secured
| #Columns = 3
| May participate in Scan Sharing structures
| Scan may start anywhere and wrap, for completion
| Scan can be throttled in scan sharing management
| Relation Scan
| | Prefetch: Eligible
| Residual Predicate(s)
| | #Predicates = 2
Hash Join
| Estimated Build Size: 4000
| Estimated Probe Size: 4000
| Access User Defined Table Function
| | Name = SYSPROC.WLM_GET
| | Specific Name = WLM_GET_WORKLOAD_OCCURRENCE_ACTIVITIES
| | SQL Access Level = No SQL
| | Language = C
| | Parameter Style =
ERROR -- Unknown Parameter Style (9)
| | Not Fenced Not Deterministic
| | Called on NULL Input Disallow Parallel
| | Threadsafe Secured
| | #Columns = 6
| | May participate in Scan Sharing structures
| | Scan may start anywhere and wrap, for completion
| | Scan can be throttled in scan sharing management
| | Relation Scan
| | | Prefetch: Eligible
| | Residual Predicate(s)
| | | #Predicates = 1
Hash Join
| Early Out: Single Match Per Inner Row
| Estimated Build Size: 4000
| Estimated Probe Size: 36000
| Bit Filter Size: 4096
| Access User Defined Table Function
| | Name = SYSPROC.WLM_GET
| | Specific Name = WLM_GET_WORKLOAD_OCCURRENCE_ACTIVITIES
| | SQL Access Level = No SQL
| | Language = C
| | Parameter Style =
ERROR -- Unknown Parameter Style (9)
| | Not Fenced Not Deterministic
| | Called on NULL Input Disallow Parallel
| | Threadsafe Secured
| | #Columns = 4
| | May participate in Scan Sharing structures
| | Scan may start anywhere and wrap, for completion
| | Fast scan, for purposes of scan sharing management
| | Scan can be throttled in scan sharing management
| | Relation Scan
| | | Prefetch: Eligible
| Insert Into Sorted Temp Table ID = t1
| | #Columns = 4
| | #Sort Key Columns = 3
| | | Key 1: (Ascending)
| | | Key 2: (Ascending)
| | | Key 3: (Ascending)
| | Sortheap Allocation Parameters:
| | | #Rows = 1000.000000
| | | Row Width = 28
| | Piped
| Access Temp Table ID = t1
| | #Columns = 4
| | Relation Scan
| | | Prefetch: Eligible
| | Sargable Predicate(s)
| | | Predicate Aggregation
| | | | Group By
| | | | Column Function(s)
| | | Process Probe Table for Hash Join
| Aggregation Completion
| | Group By
| | Column Function(s)
Hash Join
| Estimated Build Size: 4000
| Estimated Probe Size: 116000
| Bit Filter Size: 4096
| Access User Defined Table Function
| | Name = SYSPROC.MON_GET
| | Specific Name = MON_GET_CONNECTION
| | SQL Access Level = No SQL
| | Language = C
| | Parameter Style =
ERROR -- Unknown Parameter Style (9)
| | Not Fenced Not Deterministic
| | Called on NULL Input Disallow Parallel
| | Threadsafe Secured
| | #Columns = 3
| | May participate in Scan Sharing structures
| | Scan may start anywhere and wrap, for completion
| | Fast scan, for purposes of scan sharing management
| | Scan can be throttled in scan sharing management
| | Relation Scan
| | | Prefetch: Eligible
Return Data to Application
| #Columns = 2
End of section
Optimizer Plan:
Operator
(ID)
RETURN
( 1)
|
HSJOIN
( 2)
/ \
TBSCAN HSJOIN
( 3) ( 4)
| / \
TFunc: GRPBY HSJOIN
SYSPROC ( 5) ( 9)
MON_GET | / \
TBSCAN TBSCAN TBSCAN
( 6) (10) (11)
| | |
SORT TFunc: TFunc:
( 7) SYSPROC SYSPROC
| WLM_GET MON_GET
TBSCAN
( 8)
|
TFunc:
SYSPROC
WLM_GET
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