2, PL/SQL. PL/SQL. PL/SQL

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Cecilia Fletcher
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1 2 PL/SQL PL/SQL (Oracle Forms Builder) (Oracle Reports Builder) PL/SQL

2 6 PL/SQL ( ) ( ) PL/SQL PL/SQL PL/SQL PL/SQL PL/SQL PL/SQL PL/SQL 9i PL/SQL C PL/SQL PL/SQL PL/SQL (

3 20 PL/SQL ) PL/SQL DIANA DIANA DIANA Ada Distribute Intermediate Annotated Notation Ada PL/SQL PL/SQL mcode P-code PL/SQL o sqlbsq pcode PL/SQL DEBUG pcode C PL/SQL PL/SQL! PL/SQL CREATE PROCEDURE PL/SQL PL/SQL PL/SQL SQL

4 6 PL/SQL SQL PL/SQL SQL Plus SQL Plus PL/SQL (SQL Plus PL/SQL 2 ) C Perl Java PL/SQL SQL Plus SQL Plus EXECUTE SQL CALL 9i SQL PL/SQL SQL PL/SQL BEGIN NULL; END; ([ 20-1])

5 20 PL/SQL 1 [ 20-1] SQL Plus ( ) SQL Plus ( (Oracle Net) ) 2 PL/SQL DIANA 21) SQL Plus 3 PL/SQL SQL Plus SQL [ 20-2] SQL 21)

6 6 PL/SQL DUAL 22) PL/SQL PL/SQL SQL SQL ( ) SQL SQL ( ) PL/SQL SQL DUAL dummy str SQL SQL DUAL dummy PL/SQL str SQL SQL 22) (Steve Adams) DUAL

7 20 PL/SQL SELECT NVL2(NULL 1 2) FROM DUAL; PL/SQL ( ) SQL PL/SQL SQL INTO SQL SELECT UPDATE myvar PL/SQL select dummy into str from dual where x = myvar SELECT dummy from dual where x = :b1 ( ) SQL SQL SQL SQL PL/SQL [ 20-3] SQL

8 6 PL/SQL DIANA foo foo DIANA ( ) foo bar bar DIANA I/O SQL SELECT PL/SQL SQL SQL PL/SQL SQL SQL PL/SQL PL/SQL

9 20 PL/SQL ( SQL ) SQL SQL Plus SQL PL/SQL SQL ( C OCI(Oracle Call Interface) ( IPC) ) PL/SQL 9i PL/SQL C SQL PL/SQL bar 20-4] [ DIANA

10 6 PL/SQL PL/SQL PL/SQL 22 PL/SQL PL/SQL C 23 PL/SQL [ 20-1] OBJ$ USER_OBJECTS DDL (VALID INVALID) SOURCE$ USER_SOURCE TRIGGER$ USER_TRIGGERS ERROR$ USER_ERRORS PL/SQL ( )

11 20 PL/SQL DEPENDENCY$ USER_DEPENDENCIES SETTINGS$ USER_STORED_SETTINGS PL/SQL IDL_UB1$ IDL_CHAR$ IDL_UB2$ IDL_SB4$ PLSQL_NATIVE_ LIBRARY_DIR USER_OBJECT_SIZE DIANA N/A PL/SQL C INVALID (USER_OBJECTS) (USER_STORED_SETTINGS) PL/SQL (USER_DEPENDENCIES) (USER_SOURCE USER_TRIGGERS) (USER_OBJECT_SIZE) USER_OBJECT_SIZE ( ) DIANA

12 6 PL/SQL DEBUG PL/SQL 0 DIANA PL/SQL USER_OBJECT_SIZE DIANA PARSED_SIZE 0 DIANA DIANA DIANA ( ) DIANA DIANA DIANA PL/SQL (PSP PL/SQL Server Pages) PSP PL/SQL HTML 23) 23) PSP

13 20 PL/SQL PL/SQL PLS-00123: Program too large or on the client side CDI-11005: (SQL execution error) line %1: End of line in string literal DIANA PL/SQL [ 20-2] DIANA (16384) 64K 80x 2 15 (32768) 128K ( ) 256M ( ) K 80x K (type) 73 : K K K 64K K DIANA PL/SQL (255) (65536) PL/SQL PL/SQL User's Guide and Reference

14 6 PL/SQL PL/SQL PL/SQL PL/SQL (type) PL/SQL PL/SQL PL/SQL bookworm books SELECT SQL> SELECT object_name object_type status 2 FROM USER_OBJECTS 3 WHERE object_name = 'BOOKWORM'; OBJECT_NAME OBJECT_TYPE STATUS BOOKWORM PACKAGE VALID BOOKWORM PACKAGE BODY VALID BOOKWORM

20 PL/SQL (VALID) DIANA BOOKWORM USER_DEPENDENCIES ( ) SQL> SELECT name type referenced_name referenced_type 2 FROM USER_DEPENDENCIES 3 WHERE name = 'BOOKWORM'; NAME TYPE REFERENCED_NAME

15 20 PL/SQL (VALID) DIANA BOOKWORM USER_DEPENDENCIES ( ) SQL> SELECT name type referenced_name referenced_type 2 FROM USER_DEPENDENCIES 3 WHERE name = 'BOOKWORM'; NAME TYPE REFERENCED_NAME REFERENCED_TYPE BOOKWORM PACKAGE STANDARD PACKAGE BOOKWORM PACKAGE BODY STANDARD PACKAGE BOOKWORM PACKAGE BODY BOOKS TABLE BOOKWORM PACKAGE BODY BOOKWORM PACKAGE [ 20-5] [ 20-5] bookworm STANDARD ( STANDARD ) bookworm bookworm books

16 6 PL/SQL books SQL> SELECT name type 2 FROM USER_DEPENDENCIES 3 WHERE referenced_name = 'BOOKS' 4 AND referenced_type = 'TABLE'; NAME TYPE ADD_BOOK PROCEDURE TEST_BOOK PACKAGE BODY BOOK PACKAGE BODY BOOKWORM PACKAGE BODY FORMSTEST PACKAGE bookworm ( referenced_name ) USER_DEPENDENCIES SQL PL/SQL SQL ALTER TABLE books ADD popularity_index NUMBER; books ( bokworm ) DDL ( ) ( ) DML DML

17 20 PL/SQL SQL> SELECT object_name object_type status 2 FROM USER_OBJECTS 3 WHERE status = 'INVALID'; OBJECT_NAME OBJECT_TYPE STATUS ADD_BOOK PROCEDURE INVALID BOOK PACKAGE BODY INVALID BOOKWORM PACKAGE BODY INVALID FORMSTEST PACKAGE INVALID FORMSTEST PACKAGE BODY INVALID TEST_BOOK PACKAGE BODY INVALID STANDARD PL/SQL INSTR LOWER NOT = > DUP_VAL_ON_INDEX VALUE_ERROR STRING INTGER $ORACLE_HOME/rdbms/admin standardsql STANDARD PL/SQL PL/SQL PL/SQL STANDARD STANDARD PL/SQL PL/SQL STANDARD ( CALL_FORM STANDRAD ) DEPTREE_FILL DEPTREE IDEPTREE

18 6 PL/SQL SQL> EXEC DEPTREE_FILL('TABLE' 'SCOTT' 'BOOKS') IDEPTREE SELECT SQL> SELECT * FROM IDEPTREE; DEPENDENCIES TABLE SCOTTBOOKS PROCEDURE SCOTTADD_BOOK PACKAGE BODY SCOTTBOOK PACKAGE BODY SCOTTTEST_BOOK PACKAGE BODY SCOTTBOOKWORM PACKAGE SCOTTFORMSTEST PACKAGE BODY SCOTTFORMSTEST utldtreesql(rdbms/admin ) SELECT RPAD (' ' 3*(LEVEL-1)) name ' (' type ') ' FROM user_dependencies CONNECT BY PRIOR RTRIM(name type) = RTRIM(referenced_name referenced_type) START WITH referenced_name = 'name' AND referenced_type = 'type'; PL/SQL

19 20 PL/SQL ALTER ALTER ALTER PACKAGE bookworm COMPILE BODY; ALTER PACKAGE book COMPILE BODY; ALTER PROCEDURE add_book COMPILE;! utlrpsql rdbms/admin DBA (VALID) DIANA (type)

20 6 PL/SQL CPU UTL_RECOMP (utlrcmpsql ) DDL 8173 PL/SQL SQL> ALTER SESSION SET EVENTS 2 '10520 TRACE NAME CONTEXT FOREVER LEVEL 10'; Session altered $ORACLE_HOME/rdbms/admin/utlrpsql SQL> ALTER SESSION SET EVENTS 2 '10520 TRACE NAME CONTEXT OFF'; Session altered

21 20 PL/SQL bookworm PL/SQL utlrpsql DBA ORA-04068: existing state of packages has been discarded ORA-04061: existing state of package "SCOTTP1" has been invalidated ORA-04065: not executed altered or dropped package "SCOTTP1" ORA-06508: PL/SQL: could not find program unit being called! ORA ( ) NULL DBMS_OUTPUT DBM S_OUTPUT DBMS_OUTPUT off ORA-04068

22 6 PL/SQL 10 2 ALTER COMPILE ) ( PL/SQL PL/SQL PL/SQL References [ 20-6] ( (Referenced by) )

23 20 PL/SQL PL/SQL Reference by [ 20-7]

24 6 PL/SQL PL/SQL grep PL/SQL! PL/SQL PL/SQL PL/SQL (RPC) PROCEDURE synch_em_up (tax_site_in IN VARCHAR2 since_in IN DATE) IS BEGIN IF tax_site_in = 'LONDON' THEN recompute_prices@findatldnworld(cutoff_time => since_in); END IF; ORA SCOTTrecompute_prices ( ) PL/SQL ( ) USER_OBJECTS TIMESTAMP

25 20 PL/SQL PL/SQL ( DATE TIMESTAMP ) synch_em_up recomputed_prices synch_em_up REMOTE_DEPENDENCIES_MODE ORA DBA ALTER SYSTEM ALTER SESSION SET REMOTE_DEPENDENCIES_MODE = SIGNATURE; PL/SQL EXECUTE IMMEDIATE 'ALTER SESSION SET REMOTE_DEPENDENCIES_MODE = SIGNATURE'; PL/SQL ALTER SESSION SIGNATURE (INITORA) false negative false negative

26 6 PL/SQL false positive false negative RPC CPU PL/SQL PL/SQL System Global Area(SGA) 24) 24) I/O

27 20 PL/SQL SGA PL/SQL (shared pool) SQL PL/SQL PL/SQL PL/SQL PL/SQL PGA CGA UGA SQL Plus (shadow) PGA(Program Global Area) PGA PGA CGA UGA SQL PL/SQL CGA(Call Global Area) CGA PGA CGA CGA UGA(User Global Area) UGA SQL(private SQL) PL/SQL PL/SQL UGA UGA CGA UGA UGA UGA PGA SGA UGA

28 6 PL/SQL PGA UGA CGA OLTP UGA SGA PGA ( ) idle time think time 25) PGA SQL DML PL/SQL UGA CGA [ 20-8] ( / ) 25) : think time

29 20 PL/SQL PL/SQL SQL DBA PL/SQL DBMS_SQL SQL PL/SQL SQL PL/SQL PGA (private SQL area) UGA CGA SELECT UGA DML CGA PL/SQL UGA CGA SQL PL/SQL PL/SQL SQL SQL (hard parse) ( PL/SQL PL/SQL )

Question: Which statement would you use to invoke a stored procedure in isql*plus?

Question: Which statement would you use to invoke a stored procedure in isql*plus? What are the two types of subprograms? procedure and function Which statement would you use to invoke a stored procedure in isql*plus? EXECUTE Which SQL statement allows a privileged user to assign privileges