SQL & PL/SQL :: How To Use Lock Statement In Oracle
Sep 17, 2013I have a scenario where lock statements in mysql need to be converted to oracle. how to convert them.
LOCK TABLES `ABC` WRITE;
UNLOCK TABLES;
ADVERTISEMENT
Server Administration :: Use Of LM ( Lock Mode) In V$lock?
Oct 4, 2012we know we can see lock mode held in session can be analysed using LM column in v$lock.But i confused in seeing LM column it all shows in numbers from 0 to 6.
eg
0,'None(0)',
1,'Null(1)',
2,'Row Share(2)',
3,'Row Exclu(3)',
4,'Share(4)',
5,'Share Row Ex(5)',
6,'Exclusive(6)')
Server Administration :: Many Lock On Oracle Database Using Forms
Mar 30, 2012I have a RAC environment with 3 nodes and application using Oracle Form Reports that access the database. Every day the application cause many locks on database when execute insert, update and delete. I don't understand why so much locks. Are there a way to avoid this? Always I have to eliminate session causing locks.
View 27 Replies View RelatedSecurity :: Lock User Accounts In Oracle Database
Jul 12, 2011I have a doubt in locking user account in oracle database.I was told to drop some unusable users in database which my clients dont require them.I verified the dependent objects of those users but not sure if these users can be dropped.
Instead can i make those user accounts locked so that they cannot connect to database? Would there be any impact on database performance if i lock those user accounts?
Is locking an account and dropping users is similar in anyway?
SQL & PL/SQL :: DML Statement For Oracle
May 20, 2010I have a table which has 4 varchar columns( col1, col2,col3, col4). There is data in the table for col1,col2,col3 and col4 is a newly added column. I want to concatenate values from col1,col2 and col3( comma separated) and put it in col4( as col1,col2,col3). Note that col1 or col2 or col3 can have null values and the concatenation should ignore null.
Is it possible to do it in a single SQL statement or should I use a procedure to do this?
Using Range In Oracle Like Statement?
Oct 8, 2009I am trying to create a SQL query which will check that various postcode formats are valid, but I am having trouble getting oracle sql to check for values within ranges - for example the following returns no rows, even though most of the postcodes I am dealing with start with 'P'.
select postcode from mytable.addresses
where postcode like '[N-R]%'
;
Am I getting my syntax wrong somewhere?
SQL & PL/SQL :: Merge Statement In Oracle
Jun 22, 2012how to update or insert another (third table ) table with merge statement
View 6 Replies View RelatedSQL & PL/SQL :: Cannot Use Oracle Procedure In Statement
Mar 11, 2010Why we can not use the Oracle Procedure in an SQL Statement?
View 12 Replies View RelatedSQL & PL/SQL :: Oracle 9i - Conditional Statement
May 9, 2011The conditional statements should not only be executed in sequence, but also if any of them are true they should not be overridden by any subsequent conditional statements being true.
When actual effort Accepted or Rejected for AST proposals and calculate a flag for "enhance to AST guideline" = Y/N as follows for each employee and display at the employee level
1)If AST eligibility = N AND proposed AST % >0, then "N"
2)Else If AST eligibility = N AND proposed AST % = 0 then "n/a"
3)Else If AST eligibility = Y AND Act Rank = 3 AND proposed AST = 0 then "Y"
4)Else If AST eligibility = Y AND Act Rank = 3 AND proposed AST >0 then "N"
5)Else If AST eligibility = Y AND Act Rank = 2 AND proposed AST = 0 then "Y"
6)Else If AST eligibility = Y AND AST % is greater than or equal to the AST guideline minimum AND less than or equal to the AST guideline maximum, then "Y"
7)Else If AST eligibility = Y AND AST % is less than the minimum guideline OR greater than the maximum guideline, then "N"
I tried the following code but I am not getting the expected result .
if (upper(P_stat)='ACCEPTED' or upper(P_stat) like 'REJECTED%') then
else if NVL(P_elgi,'N') <> 'Y' AND P_prop > '0' then
P_flag := 'N';
else if(NVL(P_elgi,'N') <> 'Y' AND P_prop = '0') then
[code]........
TX Lock Without Corresponding TM Lock
Jul 23, 2012I was pretty sure that every TX lock needs TM lock (at least one). But now on my 9.2.0.8 I can see:
SQL> select * from v$lock where type <> 'MR';
ADDR KADDR SID TY ID1 ID2 LMODE REQUEST CTIME BLOCK
---------------- ---------------- ---------- -- ---------- ---------- ---------- ---------- ---------- ----------
070000026525D648 070000026525D668 4 RT 1 0 6 0 6551105 0
070000026525D3E8 070000026525D408 5 XR 4 0 1 0 6551108 0
070000026525D6E0 070000026525D700 6 TS 2 1 3 0 6551103 0
0700000267173060 07000002671731D8 36 TX 524304 1532490 6 0 2952 0
0700000266EC07F0 0700000266EC0968 63 TX 655400 1550373 6 0 3750 0
0700000266EC0E78 0700000266EC0FF0 65 TX 720899 1461986 6 0 3711 0
0700000265FB6638 0700000265FB67B0 79 TX 327689 1556563 6 0 3825 0
0700000266EDEA08 0700000266EDEB80 85 TX 786469 1365502 6 0 3461 0
0700000266F52498 0700000266F52610 101 TX 196609 1556026 6 0 3850 0
0700000266EDDD10 0700000266EDDE88 126 TX 1114150 1344174 6 0 1474 0
0700000266F517A0 0700000266F51918 137 TX 589849 1605371 6 0 6345 0
07000002671554B8 0700000267155630 207 TX 262156 1529066 6 0 3826 0
07000002670E13B8 07000002670E1530 238 TX 917504 1391304 6 0 66 0
0700000266D094A8 0700000266D094D0 238 TM 194337 0 2 0 35 0
0700000266D093D8 0700000266D09400 238 TM 43802 0 2 0 35 0
0700000266D09308 0700000266D09330 238 TM 7387 0 2 0 35 0
0700000266D09238 0700000266D09260 238 TM 7374 0 2 0 35 0
0700000266D09168 0700000266D09190 238 TM 7380 0 3 0 35 0
0700000266D09098 0700000266D090C0 238 TM 7228 0 3 0 66 0
0700000266F51E28 0700000266F51FA0 261 TX 393224 1563714 6 0 4586 0
So whats can cause this, I can see that TX locks are mostly from JDBC connection from Application server .
Variable Usage In Type Of Table Declaration Statement And Execute Immediate Statement
Aug 10, 2011HOW to use variable P_TMPLID in following statement
TYPE typ_unrecon IS TABLE OF REC_' || P_TMPLID ||'_UNRECON%ROWTYPE index by binary_integer;
because its throwing error while compiling
and also in statement
FORALL i IN unrecondata.FIRST .. unrecondata.LAST SAVE
EXCEPTIONS
--STRSQL := '';
--STRSQL := ' INSERT INTO REC_' || P_TMPLID ||'_UNRECON VALUES ' || unrecondata(i);
-- EXECUTE IMMEDIATE STRSQL;
INSERT INTO REC_' || P_TMPLID ||'_UNRECON VALUES unrecondata(i);---throwing error on this statement
commit;
--dbms_output.put_line(unrecondata(2).TRANSID);
EXCEPTION
Using WITH Statement In Oracle Procedure Or Function
May 24, 2011Is it possible to use WITH statement in an Oracle procedure or function?
I've had problems compiling a procedure with "WITH" statement.
PL/SQL :: Oracle 10g - Write Select Statement With XML
Sep 26, 2012I have Oracle 10g. In a table with just one record there is a clob with the following xml. In the following clob, there could be any number of Emp elements.
<?xml version="1.0"?>
<ROWSET>
<Emp>
<ENAME>SMITH</ENAME>
<EMPNO>7369</EMPNO>
<SAL>800</SAL>
</Emp>
<Emp>
<ENAME>ALLEN</ENAME>
<EMPNO>7499</EMPNO>
[code]...
I want to write a select statement which gives me result as follows (all ENAME and EMPNO from the xml)
ENAME EMPNO
SMITH 7369
ALLEN 7499
WARD 7521
Insert Into Statement - Getting ORACLE Error?
Jan 22, 2012I am creating the following two tables...no issues here:
CODECREATE TABLE COURSE_SECTION
(
Csecid NUMBER(8) CONSTRAINT COURSE_SELECTION_NUMBER_pk PRIMARY Key,
Cid NUMBER(6) NOT NULL CONSTRAINTS COURSE_SELECTION_Cid_fk REFERENCES COURSE,
Termid NUMBER(5) NOT NULL CONSTRAINTS COURSE_SELECTION_Termid_fk REFERENCES TERM,
[code]...
The issue I am having is actually inserting data into the table:
CODEINSERT INTO ENROLLMENT
VALUES (100, 1000, 'A' );
INSERT INTO ENROLLMENT
VALUES (100, 1003, 'A' );
[code]...
But I get an ORACLE error of
ORA-02291- integrity constraint (User1.ENROLLMENT_CSECID_FK) violated - parent key not foundHow can the parent key not be found when I have it declared/created in the above statement?
Enq - TX - Row Lock Contention?
Oct 10, 2012In my current project, I am handling an Oracle database with version 10.2.0.3. I analyzed the AWR report for the past month abd saw the following wait events consistently:
CPU time - 45.6% (% Total Call Time)
db file sequential read - 30.6% (% Total Call Time)
enq: TX - row lock contention - 18.8 % (% Total Call Time)
I have uploaded the report for your reference.What should be my approach to troubleshoot this?
Attached File(s)
awr_report.html ( 382.28K )
Number of downloads: 6
SQL & PL/SQL :: How To Lock Particular Row In A Table
Jul 19, 2012how one can lock a particular row in a table.for example i have a employee table in which 50 records. now i want to lock only 10 records of the employee table.
View 8 Replies View RelatedSQL & PL/SQL :: Row Level Lock
Mar 14, 2011I have a transaction table with some custom properties and two status columns. There are 2 different applications(.Net and Pl/SQL Procedure) using the table. Both the process run parallel and fetch records one by one, perform some calculation and update the status column.
-.Net updates - Extraction_status
-Pl/SQL updates - Ingestion_status
There are likely more chances that both applications will fetch the sane record and try to update the same row. This will cause a lock. Can i use row level lock before update by each application? Or is there any other methods/process in which this can be handled. ?
SQL & PL/SQL :: Lock On Loop
Aug 28, 2012begin
for i in 1..10000 loop
update table1
set col1= col1+1
where type =1;
commit;
end loop;
end;
My question is, if a strored procedure contains the script above and the said procedure will be invoked by two or more sessions at the same time. Does it mean that the 1st session will lock the related rows and other sessions will have to wait for loop in session one to finish?
PL/SQL :: How To Lock Session
Jul 18, 2013i have application where user logs and perform manipulation operation such as insert and update on database table.some time its possible that same user login twice, i just want to hold one session until and unless dml operation perform by another session gets complete.how to accomplish this in database level .
View 6 Replies View RelatedPL/SQL :: Lock On Package
Feb 14, 2013I am unable to compile my package because of a lock being held on it . Let me provide the details for better clarity .
select * from dba_ddl_locks where session_id=111 and owner='RAHUL';
session_id owner name type mode_held mode_requested
111 RAHUL RAHUL_PKG BODY NULL None
111 RAHUL RAHUL_PKG Table/Procedure/Type NULL NoneThe session details of the session id 111 is as below
select sid,serial#,user#,username,command,status,process,sql_exec_start from v$session where sid=122
sid serial# user# username command status process SQL_EXEC_START
111 3558 222 RAHUL 47 KILLED 4420 13-DEC-12 02.00.00 AM
The strange this is that we have tried killing this session and the status above even shows ' 'KILLED', stilll the dba_ddl_locks is showing the lock details on the package RAHUL_PKG and we are unable to compile the package (the locking session is running since 13-Dec-2012 ) and we are unable to kill that . Also , is it like if i have executed a package that is referencing some other package then we wont be able to compile the referenced package until and unless the dependent package has completed its execution ??
Display String Using Select Statement In Oracle 10g
Jul 27, 2010i want display a string like this using a select statement in oracle 10g.i have tried but not yet done.
example:
-----------
from 'ABCDEFGH' to 'ACEG'
removing 'BDFH' from the source string 'ABCDEFGH'
i giving here the example you can take any valid string i want the result like the above example and also in a dynamic manner means we can give string to a select statement in run time.can it is possible in a select statement only.
How To Get SQL Statement That Caused Exception In Oracle Function
Jul 18, 2011I am trying to search a way to get the SQL statement that caused an exception withing an oracle function.
I tried:
SELECT sql_text
from v$session ses, v$sql sql
where sql.sql_id = ses.prev_sql_id
and ses.sid = sys_context('userenv','SID') AND ROWNUM = 1;
but this doesn't always return the last statement that the function has executed. if needed i can send the complete script for the function and its tables and stored procedures for testing.
Select Statement To Oracle DB - Time Converting?
Aug 27, 2009 My company use a sybase database that runs business jobs. Currently we run SQL queries from Perl to gather time information on the jobs. Now we have an application that is using Oracle. The server it is on, doesn't have perl, so I am using a shell script to login to sqlplus and run a query for a job and it's end time. I have accomplished this. However, here is the 2 problems I am having.
1. The query reults are returned in Scientific time, I'm able to convert that to EPOCH time in the SQL syntax, however, it comes back with a 13 digit time, instead of 10. The last 3 digits are zero. How can you remove the last 3 digits in the query or convert the 13 digits to Human Time. Right now when you see the select statement, I am doing a to_char to get it to EPOCH time.
2. How to only show the latest time in the query and not show ALL job end times from it's past runs.
Here is my shell script, and I do realize this maybe a select statement syntax solution to one or both, but the UNIX time stamp is puzzling.
#!/usr/bin/sh
sqlplus -S username/password@JAWSPROD <<eof> myfile
set heading off feedback off verify off
select JAWS_APP.JAWSJOB.JOBNAME, to_char(JAWS_APP.JOBRUN.ENDTIME) from JAWS_APP.JAWSJOB, JAWS_APP.JOBRUN where JAWS_APP.JAWSJOB.JOBID = JAWS_APP.JOBRUN.JOBID and JAWS_APP.JAWSJOB.JOBNAME in ('pa_box_settle');
exit
Using Of ROWNUM In Insert Statement Gives Error In Oracle 11g
May 24, 2011I have a query regarding the use of rownum inside the insert statement.
For example, I have a sample table as: sample1(aa date, bb number);
Insert
INTO sample1
VALUES (SYSDATE, ROWNUM);
this statement is working fine in Oracle 9i but gives error in Oracle 11.2.0.1. The error is ORA-976 ,
Why this error coming in Oracle 11g and how to resolve it?
Our Environment: UNIX AIX 5.3, Oracle 11.2.0.1 database
SQL & PL/SQL :: Oracle Update Statement Using Undocumented Hint
Jun 1, 2010I have been asked to rewrite the following update statement without using the hint BYPASS_UJVC.
l_new_CFT_ID CASHFLOW_TYPE.CFT_ID%TYPE;
if (l_Record > 0) then
-- since at least 1 loan was found with the old type, process the actual update
update /*+BYPASS_UJVC*/ (
select
cfa.CFA_CFT_ID
[code]......
I think I am supposed to be using the Merge statement but I am not sure on how to go about it.
Server Administration :: Oracle Hints In SQL Statement
Sep 30, 2011What is the use of using Hints within SQL statements w.r.t query tuning? How to know which hint to use when?
View 1 Replies View RelatedOracle 11gr2 - How To Create Insert Statement
Jun 6, 2013oracle 11gr2
linux
how to generate insert script by using command prompt. Actually am using toad generating insert statement but it is taking too long time to generate.
SQL & PL/SQL :: Select Statement From Schemas In MERGE Statement In USING Clause
Sep 13, 2013In the following merge statement in the USINg clause...I am using a select stament of one schema WEDB.But that same select statement should take data from 30 schemeas and then check the condition below condition
ON(source.DNO = target.DNO
AND source.BNO=target.BNO);
I thought that using UNIONALL for select statement of the schemas as below.
SELECT
DNO,
BNO,
c2,
c3,
c4,
c5,
c6,
c7
[code]....
Rowlevel Dead Lock
Aug 19, 2011In my trace file am getting the following error, I understand this is due to the row level deadlock between two sessions accessing the same rows in a table.
*** 2011-08-17 20:22:27.969
DEADLOCK DETECTED ( ORA-00060 )
[Transaction Deadlock]
The following deadlock is not an ORACLE error. It is a deadlock due to user error in the design of an application or from issuing incorrect ad-hoc SQL. The following information may aid in determining the deadlock:
Deadlock graph:
---------Blocker(s)-------- ---------Waiter(s)---------
Resource Name process session holds waits process session holds waits
TX-016e0017-0001e10f 75 2370 X 153 2269 X
TX-0217000f-00009247 153 2269 X 75 2370 X
session 2370: DID 0001-004B-0015DCCEsession 2269: DID 0001-0099-000FB698
session 2269: DID 0001-0099-000FB698session 2370: DID 0001-004B-0015DCCE
Rows waited on:
Session 2370: obj - rowid = 000329C9 - AAAynJAAIAAEkVIAAG
(dictionary objn - 207305, file - 8, block - 1197384, slot - 6)
Session 2269: obj - rowid = 000329F2 - AAAynyAARAAEhMBAAA
(dictionary objn - 207346, file - 17, block - 1184513, slot - 0)
----- Information for the OTHER waiting sessions -----
Session 2269:
sid: 2269 ser: 36409 audsid: 563917587 user: 107/PICKLE flags: 0x8000041
pid: 153 O/S info: user: oracle, term: UNKNOWN, ospid: 27324
image: oracle@snokhup4000
client details:
O/S info: user: appsrv, term: , ospid: 1234
machine: snokhup255 program:
current SQL:
DELETE FROM moderation_queue WHERE parent_id =:1 AND submission_type =:2 AND site_id IN ( select site_id from sites where personna_id= 1 )
----- End of information for the OTHER waiting sessions -----
Information for THIS session:
----- Current SQL Statement for this session (sql_id=5rywrxc0mpcc1) -----
delete from shadow_users where user_id=:1 and personna_id=:2
--------------------------------------------------------------------------------
how to overcome or avoid the rowlevel deadlock.
SQL & PL/SQL :: How To Release Lock On Table
Apr 12, 2010How to Release Lock on table ? ( without killing session )
create table x ( a number);
insert into x(a) values (1);
Lets lock table.
declare
cursor c is select * from x for update;
begin
open c ;
end;
[code]....
