Numbers iOS Question RE: Locking Tables & Charts

I've created a number of tables and charts on the iPad to be used for an anesthesia record template. How do I lock the tables and charts so that they don't inadvertently get moved or disturbed?

iOS version doesn't have the lock ability.
Jason

Similar Messages

Few lock table questions ...

I have an app with Java + Oracle. I have a few tables which can be modified ( select, insert, up, del) by more than one user.
For ex
//---------- get info from database
SELECT a FROM A;
// later
SELECT b FROM B;
// --------- end
Q1). how can I make sure that after I select from A, no one modifies table B, until I select from B ?
Q2). If I have 3 tables and I have to insert some values, in all of them, how should I do this ? ( lock tables, put the insert * 3 into an transaction, release locks)
Q3). I know that jdbc-odbc isn't very good, but still, can I use it ?

Q1). how can I make sure that after I select from A,
no one modifies table B, until I select from B ?No one modifies table B in any way at all? While the user goes for a coffee break? Why would you want that?
Q2). If I have 3 tables and I have to insert some
values, in all of them, how should I do this ? ( lock
tables, put the insert * 3 into an transaction,
release locks)Just insert the records. You can put the three inserts in a transaction, if you need that, but there's no point in preventing other users from accessing the tables while you do that.
Database applications that use Oracle or other databases designed for large numbers of users rarely lock tables. If your design leads you into a place where you have to lock tables then you probably need to go back and fix your design so that it supports multiple users in a normal way.
Q3). I know that jdbc-odbc isn't very good, but
still, can I use it ?Sure. But Oracle comes with its own JDBC drivers so you don't need to.

Questions on Locking-- URGENT

Here are my questions on Locking.:
1)
How do I use v$lock to figure out lock details ? Details like
whos has locked,on which table,who else is waiting, and what type
of locking (shared or exlusive ?), since when it is locked.
2)
Why and when exclusive/shared locks are used ? Could you give me
example please ?
3)
Could you tell me significance of v$mystat and v$locked_object ?
4)
Do we have page level locking in Oracle ?
Thanks in advance,
DN

Details about locks : All locks acquired by statements within a transaction are held for the duration of the transaction.
Oracle releases all locks acquired by the statements within a transaction when an explict or implied commit or roll back is executed. Oracle also releases locks acquired after a savepoint when rolling back to the savepoint.
Note: Only transactions not waiting for the previously locked resources can acquire locks on now available resources. Waiting transactions continue to wait until after the original transaction commits or completely rolls back.
1. How do I use v$lock to figure out lock details? Details like
whos has locked,on which table,who else is waiting, and what type
of locking (shared or exlusive ?), since when it is locked.
Better way is to use Oracle OEM. The TYPE column in v$lock shows the type of wait events and we also have the LMODE column (lock mode) and REQUEST columns.
Here is a comprehensive v$lock query by Deepak Baranwal, listing the lock types:
set echo off
col sid form 9999
col id1 form 9999999999
col id2 form 999999999
col lmode head "Lock Held" form a14
col request1 head "Lock Request" form a16
col type head "Lock Type" form a15
col ctime head "Time|Held" form 999999
col block head "No Of |Sessions|Waiting|For This|Lock" form 99999
select sid,
DECODE(TYPE,
'BL','Buffer hash table',
'CF','Control File Transaction',
'CI','Cross Instance Call',
'CS','Control File Schema',
'CU','Bind Enqueue',
'DF','Data File',
'DL','Direct-loader index-creation',
'DM','Mount/startup db primary/secondary instance',
'DR','Distributed Recovery Process',
'DX','Distributed Transaction Entry',
'FI','SGA Open-File Information',
'FS','File Set',
'IN','Instance Number',
'IR','Instance Recovery Serialization',
'IS','Instance State',
'IV','Library Cache InValidation',
'JQ','Job Queue',
'KK','Redo Log "Kick"',
'LS','Log Start/Log Switch',
'MB','Master Buffer hash table',
'MM','Mount Definition',
'MR','Media Recovery',
'PF','Password File',
'PI','Parallel Slaves',
'PR','Process Startup',
'PS','Parallel Slaves Synchronization',
'RE','USE_ROW_ENQUEUE Enforcement',
'RT','Redo Thread',
'RW','Row Wait',
'SC','System Commit Number',
'SH','System Commit Number HWM',
'SM','SMON',
'SQ','Sequence Number',
'SR','Synchronized Replication',
'SS','Sort Segment',
'ST','Space Transaction',
'SV','Sequence Number Value',
'TA','Transaction Recovery',
'TD','DDL enqueue',
'TE','Extend-segment enqueue',
'TM','DML enqueue',
'TS','Temporary Segment',
'TT','Temporary Table',
'TX','Transaction',
'UL','User-defined Lock',
'UN','User Name',
'US','Undo Segment Serialization',
'WL','Being-written redo log instance',
'WS','Write-atomic-log-switch global enqueue',
'XA','Instance Attribute',
'XI','Instance Registration',
decode(substr(TYPE,1,1),
'L','Library Cache ('||substr(TYPE,2,1)||')',
'N','Library Cache Pin ('||substr(TYPE,2,1)||')',
'Q','Row Cache ('||substr(TYPE,2,1)||')',
'????')) TYPE,
id1,id2,
decode(lmode,
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)') lmode,
decode(request,
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)') request1,
ctime, block
from
v$lock
where sid>5
and type not in ('MR','RT')
order by decode(request,0,0,2),block,5
2 .Why and when exclusive/shared locks are used ? Could you give me
example please ?
Exclusive Lock Mode : Prevents the associates resource from being shared. This lock mode is obtained to modify data. The first transaction to lock a resource exclusively is the only transaction that can alter the resource until the exclusive lock is released.
Share Lock Mode : Allows the associated resource to be shared, depending on the operations involved. Multiple users reading data can share the data, holding share locks to prevent concurrent access by a writer (who needs an exclusive lock). Several transactions can acquire share locks on the same resource.
Oracle Lock Types
DML locks (data locks)
DDL locks (dictionary locks)
Oracle Internal Locks/Latches
Oracle Distributed Locks
Oracle Parallell Cache Management Locks
3. Could you tell me significance of v$mystat and v$locked_object ?
v$locked_object show the information about Who is locking and what object they locking. This view is similar to v$mystat except that it shows cumulated statistics for all sessions.
4. Do we have page level locking in Oracle ? No
Sachin

IDOC Receiver Adapter, getting Lock Table Overflow to CRM System

Hello SDN!!!
This scenario is for PI to process a file and send to CRM via IDOC. The IDOCu2019s are only being created and not processed until later.
Problem: I am getting a Lock Table Overflow error in method IDOC_INBOUND_ASYNCHRONOUS via sm58 in PI which points to the CRM box.
I have been searching many forums and every solution seems to indicate increasing the lock table, the problem with that solution is we are currently trying to create (not process yet) 80000 IDOCu2019s. This would allocate too much for the lock table.
So my question is this, Shouldnu2019t the lock be released when the IDOC gets created or none the less when a packet of IDOCu2019s via content management (breaking up the file in 1000 increments) finish. The lock table in CRM keeps increasing until all rows from the file, sent via IDOC adapter in 80 messages with 1000 IDOCu2019s per messagein the table are complete (80 separate messages in sxmb_moni).
Background:
IDOC was imported, changed to include unbounded and reimported.
Content Management breaks the file into 80 different segments, thus creating 80 distinct mappings with distinct MessageIdu2019s.
80 IDOC packets are sent to CRM, via IDOC adapter and sm58.
TCODE sm12 in CRM shows the table to keep growing and locks not released until full message is complete.
Any help would be appreciated
Cheers
Devlin

The only way to process the IDOCs in this case is by increasing the "enque/table_size" parameter in order to create the required IDOCs. You can increase the value for this parameter up to 102400 (beyond that can cause performance issues). Since you need to handle 80000, this shouldn't be an issue.
Please refer to the notes below for more information about the lock queue overflow and management.
[Note 552289 - FAQ: R/3 Lock management|https://websmp230.sap-ag.de/sap(bD1wdCZjPTAwMQ==)/bc/bsp/spn/sapnotes/index2.htm?numm=552289]
[Note 13907 - System error in the block handler, overflow lock table|https://websmp230.sap-ag.de/sap(bD1wdCZjPTAwMQ==)/bc/bsp/spn/sapnotes/index2.htm?numm=13907]

MM42 change material, split valuation at batch level, M301, locking table

Dear All,
I'm working on ECC 6.0 retail and I have activated split valuation at batch level. Now in MBEW for this specific material I have almost 14.400 entries.
If I try to change some material data (MM42) I receive an error message M3021 A system error has occurred while locking and then Lock table overflow.
I used SM12 to see the table (while MM42 is still running) and it seems that MBEW is the problem.
What should I do? For any material modification the system has to modify every entry in MBEW? Is there any possibility to skip this?
Thank you.

Hi,
Symptom
Key word: Enqueue
FM: A system error has occurred in the block handler
Message in the syslog: lock table overflowed
Other terms
M3021 MM02 F5 288 F5288 FBRA
Reason and Prerequisites
The lock table has overflowed.
Cause 1: Dimensions of the lock table are too small
Cause 2: The update lags far behind or has shut down completely, so that the lock entries of the update requests that are not yet updated cause the lock table to overflow.
Cause 3: Poor design of the application programs. A lock is issued for each object in an application program, for example a collective run with many objects.
Solution
Determine the cause:
SM12 -> Goto -> Diagnosis (old)
SM12 -> Extras -> Diagnosis (new)
checks the effectiveness of the lock management
SM12 -> Goto -> Diagnosis in update (old)
SM12 -> Extras -> Diagnosis in update (new)
checks the effectiveness of the lock management in conjunction with updates
SM12 -> OkCode TEST -> Error handling -> Statistics (old, only in the enqueue server)
SM12 -> Extras -> Statistics (new)
shows the statistics of the lock management, including the previous maximum fill levels (peak usage) of the partial tables in the lock table
If the owner table overflows, cause 2 generally applies.
In the alert monitor (RZ20), an overrunning of the (customizable) high-water marks is detected and displayed as an alert reason.
The size of the lock table can be set with the profile parameter u201Cenque/table_size =u201C. specifies the size of the lock table in kilobytes. The setting must be made in the profile of the enqueue server ( u2026_DVEBM.. ). The change only takes effect after the restart of the enqueue server.
The default size is 500 KB in the Rel 3.1x implementation of the enqueue table. The resulting sizes for the individual tables are:
Owner table: approx 560.
Name table: approx 560.
Entry table: approx 2240.
As of Rel 4.xx the new implementation of the lock table takes effect.
It can also be activated as described in note 75144 for the 3.1I kernel. The default size is 2000 KB. The resulting sizes for the individual tables are:
Owner table: approx 5400
Name table: approx 5400
Entry table: approx 5400
Example: with the
u201Cenque/table_size =32000u2033 profile parameter, the size of the enqueue table is set to 32000 KB. The tables can then have approx 40,000 entries.
Note that the above sizes and numbers depend on various factors such as the kernel release, patch number, platform, address length (32/64-bit), and character width (Ascii/Unicode). Use the statistics display in SM12 to check the actual capacity of the lock table.
If cause 2 applies, an enlargement of the lock table only delays the overflow of the lock table, but it cannot generally be avoided.
In this case you need to eliminate the update shutdown or accelerate the throughput of the update program using more update processes. Using CCMS (operation modes, see training BC120) the category of work processes can be switched at runtime, for example an interactive work process can be converted temporarily into an update process, to temporarily increase the throughput of the update.
For cause 3, you should consider a tuning of the task function. Instead of issuing a large number of individual locks, it may be better to use generic locks (wildcard) to block a complete subarea. This will also allow you to considerably improve the performance.

Lock tables

I would like to write something which allows me to flag if someone has locked a table.
I have found this link which pretty much is asking the same thing I need to do, but I am not 100% how I can apply it.
To me it seems that the procedure in this link is automatically locking table test_table, while I want to be able to flag when someone is locking a specific table without locking it in the procedure...if it makes sense
http://oracle.ittoolbox.com/groups/technical-functional/oracle-dev-l/how-to-display-message-using-default-lock-in-oracle-9i-1571268
Can you either clarify the link if possible or address me to a better solution?
Thanks very much in advance

is there a way to find out if a particular record in a specific table is locked, ratherthan the whole table itself?I don't think there is. That would involve looking at uncommitted data which Oracle won't let you do.
You might be better off asking your question in the Database - General forum though General Database Discussions as there are some very clever people there who understand Oracle locking internals far better than I do.

OBIEE: Pivot table chart is not proper when GOURL is on Measure Column

Hi All,
I a facing an issue with Pivot table chart drill.
Pivot Table columns:
Row description column in row section.
Column description (Periods) in column section and
A Number format amount column in Measure Section (In BMM it is not defined as a measure column).
GOURL written on the Measure column to enable the drill in Pivot table data.
When I click on chart the pivoted reasults Graph: Vertical Bar, Type: Default, Style: Rectangle.
It shows the row description in X axis but the amount is not shown properly (it just shows 1,2,3..numbers on Y axis instead of the amounts which are in lakhs) on Y axis and alos there is not vertical bars showing up.
Any help in this regard is very helpfull.
Regards,
Sagar Vishwanathwar.

hi Karthikeyan,
use combined with similar request(union report)
In first criteria show all the columns
Second criteria 'Grand total' , year ,month, avg _formula that u have
Thanks,
Saichand.v

Issue in locking Table

Hi All,
I need to update a ZTABLE with UNIQUE serial number while creating shipment and Delivery.
I have used ENQUEUE_E_TABLE to lock the table before updating table in both the ZProgram which will update the serial numbers.
The problem is even though i locked the table , i am facing problem with creation of duplicate number serial numbers while shipment and delivery happens at the same time.We have tested this with multiuser environment.
Since both shipment and delivery updating in UPDATE TASK i coudnt use COMMIT WORK in the programs.
Please let me know if there are any tricks how to lock the table and also for using COMMIT WORK inside UPDATE TASK.
Give some example program for locking tables especialy used in update task.
Thanks and Regards,
kandakumar

Hi
Lock the table before updating it and check the locking with sy-subrc and if it is not locked then use do loop to lock the table.
See the dummy code ,hope it will help you.
Do n times.
*Lock the table
*Check sy-subrc if it is 0 exit the loop else
try again.
if locking is suceessfull.
set a flag.
endif.
Enddo.
If flag is not set give the message table is not locked.
else if it is locked then proceed with updation
Cheers
Neha shukla

"Lock table overflow" error msg when trying to change a repot program

hi ABAP experts,
We are getting the following error msg
"Lock table overflow
Choose 'Display object' or 'Cancel'.".
Click the question mark on the same error msg window, then the detailed error msg would like this:
Message no. MC603
Diagnosis
This table overflowed when trying to enter SAP locks in the lock table.
System Response
The locks could not be set.
Procedure
Contact your system administrator. If this error occurs frequently, change the size of the profile parameter 'enque/table_size'. This parameter defines the size of the lock table in KByte.
What would be the reason and how to resolve this problem?
<REMOVED BY MODERATOR>
Edited by: Alvaro Tejada Galindo on Apr 2, 2008 1:03 PM

Hi,
This could be bcos the lock table is getting overflowed beyond the allotted space. Check if any other program/BAPI is causing continuous creation of locks.
To analyze choose (SM12) Extras Statistics to display the statistics. These are the statistics that have been compiled since the last time the lock server was restarted.
Check the below link for more information on SAP Lock Concept.
http://help.sap.com/saphelp_nw04/helpdata/en/7b/f9813712f7434be10000009b38f8cf/content.htm
For details on Subsequent Analysis of Lock Table Overflows, check the below links.
http://help.sap.com/saphelp_nw2004s/helpdata/en/d3/43d2416d9c1c7be10000000a1550b0/content.htm
http://help.sap.com/saphelp_nw04/helpdata/en/f0/b57338788f4d72e10000009b38f8cf/content.htm
Hope this helps. <REMOVED BY MODERATOR>
Thanks,
Balaji
Edited by: Alvaro Tejada Galindo on Apr 2, 2008 1:03 PM

JDBC Lock Table

I am developing two java programs that are accessing an Oracle database using JDBC. The two programs are to access to same table simultaneously.
Is there a way I can use an sql LOCK TABLE command to lock a table while one program is writing to the table, and have the other program check for this Lock, and only proceed with updates on that table if the table is not locked? Would I need to have seperate database login IDs to accomplish this?
For example:
Program 1
stmt.executeUpdate("LOCK TABLE A");
//insert some records
con.commit();
Program 2
While ( TABLE A IS LOCKED)
//wait
Update table A

In future JDBC questions should be posted into the JDBC forum.
Whatever you are doing don't. Just use transactions. Figure out what kinds of transaction serialization your setup supports too.

Locked table by an insert

Hi,
some times an insert locks all the concerned table this transaction is always from web.
Any idea?
regards.

Here are some questions:
How can the table be locked, preventing DML by other users?
1) Is your application or users issuing SELECT FOR UPDATE commands
2) Is your application or users issuing LOCK TABLE IN EXCLUSIVE MODE
3) Is referential integrity being checked on foreign keys that do not have an index? If so, shared locks can be issued against the table limiting DML execution until the RI checks are complete.
Are you sure there is a table lock?
1) What are users waiting on when this problem occurs? Check v$session_wait for this. Also join v$session and v$lock on SID to see who has the lock(s) blocking the table.

Lock table is out of available lock entries

Hi,
I'm using BDB 4.8 via Berkeley DB XML. I'm adding a lot of XML documents (ca. 1000) in one transaction and get "Lock table is out of available lock entries". My locks number is set to 100000 (it's too much but still...).
I know that I probably should not put so many docs in the same transaction, but why BDB throws "not enough locks" error? Aren't 100000 locks enough? (I also tried to set 1 million for testing purposes)
As a side effect question, may I change the number of locks after environment creation (but before opening it)?
P.S. Hope it's not offtop on this forum
Thanks in advance,
Vyacheslav

Hello,
As you mention, "Lock table is out of available lock entries" indicates that there are more locks than your underlying database environment is configured for. Please take a look at the documentation on "Configuring locking: sizing the system" section of the Berkeley DB Reference Guide at:
http://www.oracle.com/technology/documentation/berkeley-
db/db/programmer_reference/lock_max.html
From there:
The maximum number of locks required by an application cannot be easily estimated. It is possible to calculate a maximum number of locks by multiplying the maximum number of lockers, times the maximum number of lock objects, times two (two for the two possible lock modes for each object, read and write). However, this is a pessimal value, and real applications are unlikely to actually need that many locks. Reviewing the Lock subsystem statistics is the best way to determine this value.
What information is the lock subsystem statistics showing? You can get this with db_stat -c or programmatically with the environment lock_stat method.
Thanks,
Sandra

Lock tables when load data

Are there any way to lock tables when i insert data with SQL*Loader? or oracle do it for me automatically??
how can i do this?
Thanks a lot for your help

Are there any problem if in the middle of my load (and commits) an user update o query data ?The only problem that I see is that you may run short of undo space (rollback segment space) if your undo space is limited and the user is running a long SELECT query for example: but this problem would only trigger ORA-1555 for the SELECT query or (less likely since you have several COMMIT) ORA-16XX because load transaction would not find enough undo space.
Data is not visible to other sessions, unless, the session which is loading data, commits it. That's the way Oracle handle the read committed isolation level for transaction.
See http://download-west.oracle.com/docs/cd/B10501_01/server.920/a96524/c21cnsis.htm#2689
Or what happens if when i want to insert data someone has busy the table?You will get blocked if you try to insert data that has the same primary key as a row being inserted by a concurrent transaction.

System error: Unable to lock table/view V_T077K_M

Hi,
Not able to work on field selection (OMSG) i am getting an error "System error: Unable to lock table/view V_T077K_M" checked in SM 12 also, but dint get there anything.
please cud you help me in this regard,

contact your basis team, there might be an overflow of the lock table because of mass changes from other users (even for other tables)

Calculate percentage based on checkbox results in Numbers iOS

Using Numbers iOS, I've created a gradebook to keep track of my students' progress.
I have used the Checkbox format for my results, and I would like to create a formula that will calculate a percentage based off of the checked results.
What formula could I use to convert the TRUE and FALSE results from my checkbox cells into 1s and 0s, add up the score, and then convert the total score into a percentage?
I've attached a picture to help explain what it is I'm trying to do here. I'd like to keep the checkboxes cells as checkboxes and only have the results converted in the "Grade" Column.
Thanks for your help!

Hi joey,
Here is an approach. The screenshot is from OSX but the formula should work well for you.
The formula in F1 =COUNTIF(A1:E1,TRUE())÷5
My reporting cell is formatted as %.
quinn

Numbers iOS Question RE: Locking Tables & Charts

Similar Messages

Maybe you are looking for