Oracl DBA lab manual
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This document provides instructions for installing and testing Oracle 9i database software. It describes downloading and running the Oracle Universal Installer, selecting installation options such as database name and location, and verifying the installation including starting up the database and logging in using Enterprise Manager. Key steps include running the Oracle Universal Installer, selecting an Oracle home directory, specifying a database name and location, rebooting the system, and using Enterprise Manager to connect as SYSDBA and start up the database.
![AND SOFAR != TOTALWORK
order by 1;
18. Write a query to find a session with high archive logs
SELECT s.sid, s.serial#, s.username, s.program, i.block_changes
FROM v$session s, v$sess_io i
WHERE s.sid = i.sid
ORDER BY 5 desc
19. Write a query to display oracle processes.
select nm, max(description) descript
from
(select regexp_replace( name,'[09az]','#') nm, description
from v$bgprocess)
group by nm
order by nm;
20. Write a query to Show the ten largest objects in the database
col owner format a15
col segment_name format a30
col segment_type format a15
col mb format 999,999,999
select owner, segment_name, segment_type, mb
from (
select owner , segment_name , segment_type , bytes / 1024 / 1024 "MB"
from dba_segments
order by bytes desc
)
where rownum < 11
21. Write a query to Is java installed in the database?
select count(*)
from all_objects
where object_type like '%JAVA%'
and owner = 'SYS'
22. Write a query to Display character set information
select * from nls_database_parameters
23. Write a query to Show all used features
select name, detected_usages
from dba_feature_usage_statistics
where detected_usages > 0
24. WAP to accept the empno and display all the details of emp. If emp does not exist display the
message
DECLARE
EMPNOV NUMBER:=&EMPNO;
EMPV EMP%ROWTYPE;](https://image.slidesharecdn.com/dbalabmanual13-14-150123233722-conversion-gate02/85/Oracl-DBA-lab-manual-26-320.jpg)
Oracl DBA lab manual
- 18. 17. When you created your database, the sample schemas (or seeded) are loaded into your database, the HR user cannot log into the database until the password has been changed or that user is unlocked. This lock has been put into place for security purposes. You can unlock the user from Enterprise Manager by expanding Security, then Users, then selecting HR. 18. Select Unlock then Apply. Unlock the other Sample Schema Users: OE, PM, SH, and QS. 19. Select File > Exit to close the Enterprise Manager Console. 2. Write procedure to Creating the Database after Installation Using the Database Configuration Assistant 1. open Oracle DBCA
- 19. 2. Select the Create a Database option and click Next. 3. Select the nodes that you want to configure as members of your cluster database and click Next. 4. Select a template from which to create your cluster database and click Next.
- 24. 3. There is a string '120000 12 0 .125' ,how you will find the position of the decimal place INSTR('120000 12 0 .125','.',1) output 13 4. Write a queries to determine the time zone under which a database was operating? SELECT dbtimezone FROM DUAL; 5. Write a queries to force a log switch? alter system switch logfile; 6. Write a queries to add a data file to a tablespace? alter tablespace USERS add datafile '/ora01/oradata/users02.dbf' size 50M; 7. Write a queries to resize a data file? alter database datafile '/ora01/oradata/users02.dbf' resize 100M; 8. Write a queries to rebuild an index? ALTER INDEX index_name REBUILD; 9. Write a queries to gather statistics on a table? exec dbms_stats.gather_table_stats 10. Write a queries to delete duplicating rows from a base table DELETE FROM table_name A WHERE rowid>(SELECT min(rowid) from table_name B where B.table_no=A.table_no); or CREATE TABLE new_table AS SELECT DISTINCT * FROM old_table; DROP old_table RENAME new_table TO old_table DELETE FROM table_name A WHERE rowid NOT IN (SELECT MAX(ROWID) FROM table_name GROUP BY column_name) 11. Write a queries to avoid your query from using indexes SELECT * FROM emp Where emp_no+' '=12345; 12. Write a query to display system global name.
- 25. SELECT * FROM GLOBAL_NAME; 13. Write a query to display ORA_DATABASE_NAME. Select ora_database_name from dual; 14. Write a queries to find the user objects created by him/her in his/her schema. select * from tab; select * from cat; select * from user_catalog; select table_name from user_tables; select table_name from tabs; select object_name,object_type from user_objects; select segment_name from user_segments; select segment_name from user_extents; 15. Write a query to show the table structure select dbms_metadata.get_ddl('TABLE','DEMO','Saju') FROM DUAL; 16. Write a query to show you the allocated, Free and Used space in each of the datafiles. SELECT SUBSTR (df.NAME, 1, 40) file_name, df.bytes / 1024 / 1024 allocated_mb, ((df.bytes / 1024 / 1024) NVL (SUM (dfs.bytes) / 1024 / 1024, 0)) used_mb, NVL (SUM (dfs.bytes) / 1024 / 1024, 0) free_space_mb FROM v$datafile df, dba_free_space dfs WHERE df.file# = dfs.file_id(+) GROUP BY dfs.file_id, df.NAME, df.file#, df.bytes ORDER BY file_name; 17. Write a query to Monitor long running operations using v$session_longops SELECT SID, SERIAL#, opname, SOFAR, TOTALWORK, ROUND(SOFAR/TOTALWORK*100,2) COMPLETE FROM V$SESSION_LONGOPS WHERE TOTALWORK != 0
- 26. AND SOFAR != TOTALWORK order by 1; 18. Write a query to find a session with high archive logs SELECT s.sid, s.serial#, s.username, s.program, i.block_changes FROM v$session s, v$sess_io i WHERE s.sid = i.sid ORDER BY 5 desc 19. Write a query to display oracle processes. select nm, max(description) descript from (select regexp_replace( name,'[09az]','#') nm, description from v$bgprocess) group by nm order by nm; 20. Write a query to Show the ten largest objects in the database col owner format a15 col segment_name format a30 col segment_type format a15 col mb format 999,999,999 select owner, segment_name, segment_type, mb from ( select owner , segment_name , segment_type , bytes / 1024 / 1024 "MB" from dba_segments order by bytes desc ) where rownum < 11 21. Write a query to Is java installed in the database? select count(*) from all_objects where object_type like '%JAVA%' and owner = 'SYS' 22. Write a query to Display character set information select * from nls_database_parameters 23. Write a query to Show all used features select name, detected_usages from dba_feature_usage_statistics where detected_usages > 0 24. WAP to accept the empno and display all the details of emp. If emp does not exist display the message DECLARE EMPNOV NUMBER:=&EMPNO; EMPV EMP%ROWTYPE;
- 28. CLOSE A; END; 27. Write a program to display all the information of emp table? DECLARE CURSOR A IS SELECT * FROM EMP; B A%ROWTYPE; BEGIN OPEN A; Page 4 of 7 LOOP http://oracleapps4u.blogspot.in/ FETCH A INTO B; EXIT WHEN A%NOTFOUND; DBMS_OUTPUT.PUT_LINE('EMP NO IS ' || B.EMPNO); DBMS_OUTPUT.PUT_LINE('ENAME IS ' || B.ENAME); DBMS_OUTPUT.PUT_LINE('SAL IS ' || B.SAL); DBMS_OUTPUT.PUT_LINE('MGR NO IS ' || B.MGR); DBMS_OUTPUT.PUT_LINE('COMM IS ' || B.COMM); DBMS_OUTPUT.PUT_LINE('HIREDATE IS ' || B.HIREDATE); DBMS_OUTPUT.PUT_LINE('DEPTNO IS ' || B.DEPTNO); DBMS_OUTPUT.PUT_LINE('EMP JOB IS ' || B.JOB); DBMS_OUTPUT.PUT_LINE('*************************'); END LOOP; CLOSE A; END; 28. Write a program to accept a range of salary (that is lower boundary and higher boundary) and print the details of emps along with loc,grade and exp? DECLARE LOSALV SALGRADE.LOSAL%TYPE:=&LOSAL; HISALV SALGRADE.HISAL%TYPE:=&HISAL; EXP NUMBER(5,2); CURSOR A IS SELECT EMP.*,LOC,GRADE FROM EMP,DEPT,SALGRADE WHERE EMP.DEPTNO=DEPT.DEPTNO AND SAL BETWEEN LOSALV AND HISALV AND SAL BETWEEN LOSAL AND HISAL; B A%ROWTYPE; BEGIN OPEN A; LOOP FETCH A INTO B; EXIT WHEN A%NOTFOUND; EXP:=MONTHS_BETWEEN(SYSDATE,B.HIREDATE)/12; DBMS_OUTPUT.PUT_LINE('EMP NO IS ' || B.EMPNO); DBMS_OUTPUT.PUT_LINE('ENAME IS ' || B.ENAME); DBMS_OUTPUT.PUT_LINE('EMP JOB IS ' || B.JOB); DBMS_OUTPUT.PUT_LINE('LOC IS ' || B.LOC); DBMS_OUTPUT.PUT_LINE('EXP IS ' || EXP); DBMS_OUTPUT.PUT_LINE('GRADE IS ' || B.GRADE); DBMS_OUTPUT.PUT_LINE('*************************'); END LOOP; CLOSE A; END; 29. Write a function to accept the empno and return exp with minimum 3 decimal? CREATE OR REPLACE FUNCTION E_DETAILS(EMPNOV NUMBER) RETURN NUMBER IS HIREDATEV EMP.HIREDATE%TYPE; EXP NUMBER(6,3);