The Environment Setting facility of the Natural Tools for DB2 allows you to issue interactively special SQL statements.
For details on the SQL statements described in this section, see the relevant DB2 literature by IBM.
This section covers the following topics:
To invoke the Environment Setting facility
Entering function code "S" on the Natural Tools for DB2 Main Menu.
The Environment Setting screen is displayed, which offers you the following functions:
CO |
Specifies and executes the SQL statement
CONNECT.
|
RE |
Specifies and executes the SQL statement
RELEASE.
|
SC |
Specifies and executes the SQL statement SET
CONNECTION.
|
SS |
Specifies and executes the SQL statement SET CURRENT
SQLID.
|
| SP | Specifies and executes the SQL statement SET CURRENT
PACKAGESET.
|
SD |
Specifies and executes the SQL statement SET CURRENT
DEGREE.
|
SU |
Specifies and executes the SQL statement SET CURRENT
RULES.
|
SO |
Specifies and executes the SQL statement SET CURRENT
OPTIMIZATION HINT.
|
SL |
Specifies and executes the SQL statement SET CURRENT
LOCALE LC_CTYPE.
|
SA |
Specifies and executes the SQL statement SET CURRENT
PATH.
|
SE |
Specifies and executes the SQL statement SET CURRENT
PRECISION.
|
SM |
Specifies and executes the SQL statement SET CURRENT
MAINTAINED TABLE TYPE FOR OPTIMIZATION.
|
SB |
Specifies and executes the SQL statement SET CURRENT
PACKAGE PATH.
|
SF |
Specifies and executes the SQL statement SET CURRENT
REFRESH AGE.
|
SH |
Specifies and executes the SQL statement SET CURRENT
SCHEMA.
|
SN |
Specifies and executes the SQL statement SET CURRENT
APPLICATION ENCODING SCHEME.
|
SY |
Specifies and executes the SQL statement SET ENCRYPTION
PASSWORD.
|
SR |
Displays the current values of the supported special registers. |
To invoke the CONNECT function
Enter function code "CO" on the Environment Setting screen.
The Connect screen is displayed:
14:23:29 ***** NATURAL TOOLS FOR DB2 ***** 2006-04-13
- Connect -
>>---- CONNECT ---+-- _ --------------------------------+-------------------><
! !
! !
+-- _ --- TO ---- ________________ --+
! (location name) !
! !
+-- _ --- RESET ----------------------+
Current Server Version ________
Command ===>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Error Exit Exec Canc |
The CONNECT function connects the current application to a designated server. This server is the current server, which is displayed in the Current Server Version field.
On the Connect screen, you identify the current server by specifying a location name. The identified server must be known to the local DB2 subsystem.
To invoke the RELEASE function
Enter function code "RE" on the Environment Setting screen.
The Release screen is displayed:
14:24:29 ***** NATURAL TOOLS FOR DB2 ***** 2006-04-13
- Release -
>>--- RELEASE ------+-------- ________________ ------+---------------------><
! location-name !
! !
+-- _ --- CURRENT ---------------+
! !
!-- _ --- ALL SQL ---------------!
! !
+-- _ --- ALL PRIVATE -----------+
Command ===>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Error Exit Exec Canc |
The RELEASE function places one or more connections in the release pending state.
To invoke the SET CONNECTION function
Enter function code "SC" on the Environment Setting screen.
The Set Connection screen is displayed:
14:23:47 ***** NATURAL TOOLS FOR DB2 ***** 2006-04-13
- Set Connection -
>>--- SET CONNECTION -------- ________________ ----------------------------><
location-name
Command ===>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Error Exit Exec Canc |
On the Set Connection screen, you identify a server by specifying a location name. The identified server must be known to the local DB2 subsystem.
To invoke the SET CURRENT SQLID function
Enter function code "SS" on the Environment Setting screen.
The Set Current SQLID screen is displayed:
14:23:47 ***** NATURAL TOOLS FOR DB2 ***** 2006-04-13
- Set Current SQLID -
>>--- SET CURRENT SQLID = ----- __________ --------------------><
( USER,
string-constant)
Command ===>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Error Exit Exec Free Canc |
The SET CURRENT SQLID function changes the value of the SQL authorization identifier. With SQL statements that use unqualified table names, DB2 uses the SQLID as an implicit table qualifier. This enables you to access identical tables with the same table name but with different creator names.
On the Set Current SQLID screen, you can replace the value of CURRENT SQLID by the value of the special register USER or by a string constant. The string constant can be up to 8 characters long.
In all supported TP-monitor environments, the SQLID can then be kept across terminal I/Os until its resetting or the end of the session.
To invoke the SET CURRENT PACKAGESET function
Enter function code "SP" on the Environment Setting screen.
The Set Current PACKAGESET screen is displayed:
09:39:07 ***** NATURAL TOOLS FOR DB2 ***** 2006-04-18
- Set Current Packageset -
>>--- SET CURRENT PACKAGESET = --------------------------------------------->
>-+-- _ - USER ----------------------------------------------------------+-><
! !
+-- _________________________________________________________________ !
(string-constant) !
_________________________________________________________________ -+
(string-constant cont.)
Command ===>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Error Exit Exec Canc |
The SET CURRENT PACKAGESET statement assigns a value to the special register CURRENT PACKAGESET.
On the Set Current PACKAGESET screen, you can replace the value of CURRENT PACKAGESET by the value of the special register USER or by a string constant of up to 18 characters.
To invoke the SET CURRENT DEGREE function
Enter function code "SD" on the Environment Setting screen.
The Set Current Degree screen is displayed:
14:23:58 ***** NATURAL TOOLS FOR DB2 ***** 2006-04-13
- Set Current Degree -
>>--- SET CURRENT DEGREE ---------- ___ -----------------------------------><
( 1 or ANY )
Command ===>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Error Exit Exec Canc |
CURRENT DEGREE specifies the degree of parallelism for the execution of queries that are dynamically prepared by the application process.
To invoke the SET CURRENT RULES function
Enter function code "SU" on the Environment Setting screen.
The Set Current Rules screen is displayed:
14:23:58 ***** NATURAL TOOLS FOR DB2 ***** 2006-04-13
- Set Current Rules -
>>--- SET CURRENT RULES ----------- ___ -----------------------------------><
( DB2 or STD )
Command ===>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Error Exit Exec Canc |
CURRENT RULES specifies whether certain SQL statements are executed in accordance with DB2 rules or the rules of the SQL standard.
To invoke the SET CURRENT OPTIMIZATION HINT function
Enter function code "SO" on the Environment Setting screen.
The Set Current Optimization Hint screen is displayed:
09:41:43 ***** NATURAL TOOLS FOR DB2 ***** 2006-04-18
- Set Current Optimization Hint -
>>--- SET CURRENT OPTIMIZATION HINT --------------------------------------->
>--- _________________________________________________________________
(string-constant)
_________________________________________________________________ ---><
(string-constant cont.)
Command ===>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Error Exit Exec Canc |
CURRENT OPTIMIZATION HINT specifies the user-defined optimization hint that DB2 should use to generate the access path for dynamic statements.
To invoke the SET CURRENT LOCALE LC_CTYPE function
Enter function code "SL" on the Environment Setting screen.
The Set Current Locale LC_CType screen is displayed:
14:58:12 ***** NATURAL TOOLS FOR DB2 ***** 2006-04-13
- Set Current Locale LC_CType -
>>--- SET CURRENT LOCALE LC_CTYPE ----------------------------------------->
>--------- ____________________________________________________ ----------><
(string-constant)
Command ===>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Error Exit Exec Canc |
CURRENT LOCALE LC_CTYPE specifies the LC_CTYPE locale that will be used to execute SQL statements that use a built-in function that references a locale.
To invoke the SET CURRENT PATH function
Enter function code "SA" on the Environment Setting screen.
The Set Current Path screen is displayed:
09:42:09 ***** NATURAL TOOLS FOR DB2 ***** 2006-04-18
- Set Current Path -
>>- SET CURRENT PATH ------------------------------------------------------->
+------------------------------<--( , )--------------------------------+
! !
>-++-------------------------------- _ ---------------------------------++-><
! (schema-name<,schema-name,...>) !
! !
+- _ ----------------------- SYSTEM PATH ----------------------------+
! !
+- _ -------------------------- USER --------------------------------+
! !
+- _ ---------------------- CURRENT PATH ----------------------------+
! !
+- _ ------------------ CURRENT PACKAGE PATH ------------------------+
Command===>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Error Exit Exec Canc |
CURRENT PATH specifies the SQL path used to resolve unqualified data type names and function names in dynamically prepared SQL statements.
To invoke the SET CURRENT PRECISION function
Enter function code "SE" on the Environment Setting screen.
The Set Current Precision screen is displayed:
15:01:17 ***** NATURAL TOOLS FOR DB2 ***** 2006-04-13
- Set Current Precision -
>>--- SET CURRENT PRECISION ------- DEC15 ---------------------------------><
(DEC15,DEC31,15,31,
D15.1 - D15.9,D31.1 - D31.9)
Command ===>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Error Exit Exec Canc |
CURRENT PRECISION specifies the rules to be used when both operands in a decimal operation have precisions of 15 or less.
To invoke the SET CURRENT MAINTAINED TABLE TYPES FOR OPTIMIZATION
function
Enter function code "SM" on the Environment Setting screen.
The Set Current Maintained Types for Optimization screen is displayed:
09:36:51 ***** NATURAL TOOLS FOR DB2 ***** 2006-04-18
- Set Current Maintained Types -
>>--- SET CURRENT MAINTAINED TYPES --- SYSTEM -----------------------------><
( ALL, NONE, SYSTEM or USER )
Command ===>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Error Exit Exec Canc |
CURRENT MAINTAINED TABLE TYPES FOR OPTIMIZATION specifies a value that identifies the types of objects that can be considered to optimize the processing of dynamic SQL queries. This register contains a keyword representing table types.
To invoke the SET CURRENT PACKAGE PATH function
Enter function code "SB" on the Environment Setting screen.
The Set Current Package Path screen is displayed:
09:37:22 ***** NATURAL TOOLS FOR DB2 ***** 2006-04-18
- Set Current Package Path -
>> - SET CURRENT PACKAGE PATH ------------------------------------------------>
+------------------------------< --( , )--------------------------------+
! !
> -++-------------------------------- _ ---------------------------------++-><
! (collection-id< ,collection-id,...> ) !
! !
+- _ -------------------------- USER --------------------------------+
! !
+- _ ---------------------- CURRENT PATH ----------------------------+
! !
+- _ ------------------ CURRENT PACKAGE PATH ------------------------+
Command ===>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Error Exit Exec Canc |
CURRENT PACKAGE PATH specifies a value that identifies the path used to resolve references to packages that are used to execute SQL statements.
To invoke the SET CURRENT REFRESH AGE function
Enter function code "SF" on the Environment Setting screen.
The Set Current Refresh Age screen is displayed:
09:37:40 ***** NATURAL TOOLS FOR DB2 ***** 2006-04-18
- Set Current Refresh Age -
>> --- SET CURRENT REFRESH AGE ----- _____________________ -----------------><
( 0 or ANY/99999999999999.000000 )
Command ===>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Error Exit Exec Canc |
CURRENT REFRESH AGE specifies a timestamp duration value with a data type of DECIMAL.
To invoke the SET CURRENT SCHEMA function
Enter function code "SH" on the Environment Setting screen.
The Set Current Schema screen is displayed:
09:38:01 ***** NATURAL TOOLS FOR DB2 ***** 2006-04-18
- Set Current Schema -
>>- SET CURRENT SCHEMA ----------------------------------------------------->
>--+- ________________________________________________________________ -+--><
! (schema-name) !
! !
+- _ --------------------------- USER -------------------------------+
! !
+- _ -------------------------- DEFAULT -----------------------------+
! !
+- ________________________________________________________________ -+
(string-constant)
Command ===>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Error Exit Exec Canc |
The CURRENT SCHEMA, or equivalently CURRENT_SCHEMA, special register specifies the schema name used to qualify unqualified database object references in dynamically prepared SQL statements.
To invoke the SET CURRENT APPLICATION ENCODING SCHEME function
Enter function code "SN" on the Environment Setting screen.
The Set Current Application Encoding Scheme screen is displayed:
09:38:21 ***** NATURAL TOOLS FOR DB2 ***** 2006-04-18
- Set Current Application Encoding Scheme -
>>--- SET CURRENT APPLICATION ENCODING SCHEME ----------------------------->
>--------------------------------- _______ -------------------------------><
( ASCII, EBCDIC, UNICODE
or 1 - 65533)
Command ===>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Error Exit Exec Canc |
CURRENT APPLICATION ENCODING SCHEME specifies which encoding scheme is to be used for dynamic statements. It allows an application to indicate the encoding scheme that is used to process data.
To invoke the SET ENCRYPTION PASSWORD function
Enter function code "SY" on the Environment Setting screen.
The Set Encryption Password screen is displayed:
09:36:13 ***** NATURAL TOOLS FOR DB2 ***** 2006-04-18
- Set Encryption Password -
>>--- SET ENCRYPTION PASSWORD ---------------------------------------------->
>---- _________________________________________________________________
(password-string-constant)
________________________________________________________________ ---->
(password-string-constant cont.)
>-+----------------------------------------------------------------------+-><
! !
+--- WITH HINT --- __________________________________ -----------------+
(hint-string-constant)
Command ===>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Error Exit Exec Canc |
The SET ENCRYPTION PASSWORD function sets the value of the encryption password and, optionally, the password hint.
To invoke the Display Special Registers function
Enter function code "SR" on the Environment Setting screen.
The Display Special Registers screen is displayed:
15:18:07 ***** NATURAL TOOLS FOR DB2 ***** 2006-04-13
- Display Special Registers -
Current
+Client_Acctng .........
+Client_ApplName .......
+Client_UserID .........
+Client_WrkStnName .....
Appl.Encoding Scheme .. EBCDIC
Date .................. 13.04.2006
Degree ................ 1
LC_CType ..............
+Maintained Types ...... SYSTEM
Member ................ DB28
+Optimization Hint .....
+Package Path ..........
Command ===>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Error Exit Updat Next Canc |
15:31:20 ***** NATURAL TOOLS FOR DB2 ***** 2006-04-13
- Display Special Registers -
Current
+PackageSet ............
+Path .................. "SYSIBM","SYSFUN","SYSPROC","GGS"
Precision ............. DEC15
Refresh Age ...........
Rules ................. DB2
+Schema ................ GGS
Server ................ DAEFDB28
SQLID ................. GGS
Time .................. 15.31.20
TimeStamp ............. 2006-04-13-15.31.20.948481
TimeZone .............. 10000
User .................. GGS
Command ===>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
Help Error Exit Updat Prev Canc |
The Display Special Registers screen shows you the current values of the Special Registers of DB2 supported by Natural for DB2.
Fields, which are prefixed with a '+', may contain more data than displayed on the screen. You can display the full contents either when you position the cursor on the field (description or data) and press Enter, or when you enter the abreviation of the field (which are the capital letters of the description) prefoxed by the '+' sign in the command line. E.g. +PS shows a window with the full value of the Current Package Set.
