How to recover in this scenario

Assume a scenario. You have taken hot backup at 1 pm.
later you have added one tablespace with new datafile.
at 2 pm. Now around 2.05 pm the DB crashed.
You have backup set upto 1 pm. Okay. Now what
will happen if you do recovery ? What about the
new TBS and datafile.

Hi,
Really this is good question from Maran,
In that case if have taken backup on 1p.m and all archive log upto 2:04 pm
then at the time of recovery,
(**plz note oracle don't have any new tablespace and dbf information in backup controlfile.)
So at the time of recovery session.
Oracle stop applying archivelog and show "unnamed datafile(s) added to controlfile by media recovery"
also give the list of new dbf files.
1.So first check newly added files in dict by
[b]select file#,name from V$datafile;
2.[b]alter database rename file '<Missing> to 'location';
3.again start recovery
Thanks
Kuljeet Pal Singh

Similar Messages

How Standby recover in this scenario

Hi All,
I have a question in my mind related to Dataguard.
I have Dataguard Configuration containing one primary and one standby.
Support i start the heavy update in primary which causes the heavy redo and undo to generated in primary. And after some time log get switch. redo data transfer to standby site and get applied.
But after some time my primary database get crash and update statement didn't commit. So when i will open my primary db instance recovery will happen. and my uncommitted update statement will get rollback with the help of undo segment.
But since standby doesn't have undo record how the standby recover this situation.
Thanks
Jamsher

As Uwe said standby has the necessary undo data.
When a crash recovery is performed on the primary, that crash recovery changes are also sent to standby via redo log data.
Also in RAC, when one of the instances crashes, another instance performs crash recovery on the failed instance's redo and ships the final archivelog to standby.

How do we map this scenario

i have a scenario,
A material is booked by the customer, customer pays some down payment and then customer takes finance from bank. bank approves for finance and release letter to us saying they are responsible for the balance amount. on that basis material is released to the customer.
and then once invoice is generated bank pays to the company
how do we map this scenario
thanks

Dear varada rajan
You can map this scenario in easiest way:
1) Create different payment terms as per requirement.
i.e. 25% Advance balance after delivery, 10% Advance balance after invoice. etc.
2) Create Order with required payment terms.
3) Capture advance payment against this order no. in F.28.
4) Create Performa invoice to issue your customer to Banker.(Proof to Banker).
5) Do PGI
6) Create Invoice.
When your posting balance amount in FI it will give warning message that we have received advance of so and so.
I think this is sufficient to map your scenario instead of going for downpayment and all.
Reward if use full.
Regards,
Srikanthraj

How do we map this scenario in SAP ECC

Hi Gurus,
I need a help from you, to get your perspective on how the below mentioned business scenario can be mapped in SAP ECC.
Scenario: The client is engaged in a business of supplying surgical kits to hospitals. The surgical kit is actually a case with two shelve in it. Tray 1 holds the equipments for surgery and the Tray 2 holds the implants for surgery. There are various different kits depending upon different surgeries. Depending upon the need/demand from the hospital appropriate kit is sent to the sales rep, who then delivers the kit to hospital. Now when the kit is supplied to the hospital, the surgeon uses the equipments from Tray 1 to perform the surgery and consumes some of the implants (as needed) from Tray 2. Once the surgery is done, the equipments are cleaned by the hospital and the kit is sent back to the sales rep.
At this point the sales rep need to raise an invoice to the hospital for the implants that were consumed from the Tray 2 and also need to charge for the service for using the equipments. Both the equipments and implants have serial numbers and each kit has a serial number.
Ask from the business
1.They should be able to track which kits are out in the field and should be able to see the inventory within the kit.
2.Should be able to consume the implants from inventory, which have been consumed during surgery and raise an invoice to the hospital for consumed implants.
3.Business should be able to charge for the equipments used
4.They should be able to track the inventory in the kits
5.They should be able to depreciate the equipments in the kits.

Hi,
You may please check in this forum
Also, please explore whether [IS-Healthcare|http://help.sap.com/content/documentation/industry/docu_is_health.htm] helps you finding a solution.
Regards,
P Gomatheeswaran

How gc works in this scenario ?

Any one please tell How the garbage collection happen in the following scenario
        class MyClass
                    public MyClass()
                        // Doing some database operation.
                    public void finalize() throws Throwable
                              MyClass a = new MyClass();
        }If we are creating an instance of MyClass, and at one moment of time
that object is out of scope. Then how the garbage collection will happen in this case?
Thanks in advance
Nikhil.K.R
[email protected]

Any one please tell How the garbage collection happen
in the following scenarioUndefined. Maybe not at all.
If we are creating an instance of MyClass, and at one
moment of time
that object is out of scope. Then how the garbage
collection will happen in this case?It will happen sometime, create a new instance, and then happen sometime again, creating a new instance.

How i can fix this Scenario ?

Scenario:
An organization recently migrated their applications to a virtualized data center. They have a group
of three physical servers running hypervisor. These physical serves are managed from a
management server. The management server allows VM migration across physical servers.
Majority of the VMs running on the physical servers provide Web service to their clients. The
remaining VMs either run the organization’s internal applications or are used for testing. VMs that
provide the Web service run MS Windows server 2008 and the Web application.
All physical servers are connected to each other and to an iSCSI storage array via a single physical
LAN switch. Storage for VMs is allocated from iSCSI LUNs available to the hypervisor. Each
physical server has two physical NICs installed and no additional slots are available to install more
NICs. Due to tight budget, the organization cannot afford to purchase additional LAN switch.
Current situation/issues:
 The organization has configured one virtual switch in each physical server to transfer all
types of traffic
 The organization is using a single VLAN to transfer all network traffic Page | 2
 Often, the performance of Web servers are impacted by other VM traffic
o For the same reason, the VM migration is delayed
 During a broadcast, all network traffic slows down
 The organization has implemented common traffic shaping policy across all virtual
switches
 The organization has enabled NIC teaming, although clients often experience mixed
performance
Organization’s requirement:
The organization wants to optimize the performance of both the Web and VM migration traffic,
control the broadcast, and apply different traffic shaping policies for different traffic types. The
organization would like to balance the client workload across all Web servers to ensure uniform
utilization of resources.
Tasks:
You are asked to change the existing network configuration to meet organization’s requirements.
Justify all changes that are required.

Never mind. I find the problem. dbora has to goes to dba group.

How do I implement this in BI Integrated Planning

Hi All,
I need to capture data in the following format I have data of Deliveries Qty by Plant & Material Type in DeliveredQty. The DeliveredQty is the delivqty as of a given date. I need to based on the DeliveredQty calculate the DelivQtyMonth. So if the DelivQty as of today (3rd July) is 1000 EA for 3 days in the current month. The user will provide as input the remaining working days in the month and the number of days in the month elapsed.
I need to calculate the DelvQtyMonth as follows = DeliveredQty + DeliveredQty/DaysElapsed * DaysRemaining
The user wants to enter the DaysElapsed and the DaysRemaining in variables.
Then I need to display the data in the following format:
Plant MaterialType DeliveredQty DelvQtyMonth ManualDelvQty
All data is display only columns except for ManualDelvQty I should provide for user to input data to this column.
I have created a realtime plan cube with plant materialtype DeliveredQty in it.
Can you kindly share your inputs how I can implement the DelvQtyMonth based on a variable at run time and ManualDelvQty.
How can I implement this scenario in BI Integrated Planning.
So far all I have done is implement a real time cube for capturing the data. I have data for plant materialtype Delivqty for a given fiscal year period. How can I copy this into the plan cube from integrated planning.
Also, how do I implement the variables for DaysElapsed and DaysRemaining for the user to input values to it.
Your help is greatly appreciated.
Thanks
Karen

Hi,
can you look at this
[http://help.sap.com/saphelp_nw04/helpdata/en/44/584041b02e4c0de10000000a1550b0/frameset.htm]
Regards,
muralidhar

How can I make this join in ADF and make CRUD operation in this

How to make this relation in ADF
I have table employees and this is my master table
Table Name: Employees
Columns:
Employee_id(PK)
Employee_name
Employee_Salary
I have a child table that is called related employee that contains employees related to this employee
Table_name: Related_Employee
Columns:
Related_Employee_Table_Id(PK)
Employee_id(FK)
Related_Employee_Id
When I open employee id = 100 for example and add related employee id = 10
this is added with no problem but the requirement is that when I open employee 10 I find employee id 100 as related employee
How can I make this scenario.

The best way to understand this is to look at an example. If you are using an oracle database such as XE for you have a schema called hr. This shema has a number of tables two of which are departments and employees. a department has multiple employees correct. So in your example a employee may be related to x # of other employees perhaps. A very similar scenario as that in the hr Schema. If you don't have an Oracle XE database, download one from here -> http://www.oracle.com/technetwork/database/express-edition/downloads/index.html
Create Business Components off of the Departments and Employees schema and you'll see that due to the db design, you get what you're talking about for free (i.e. the join). Thus, you have the master-detail relationship you're looking for. For a quick tip, here is the relationship between departments and employees in the hr schema via a create script that you can exam with data inserts included:
SET SQLBLANKLINES ON
CREATE TABLE DEPARTMENTS
DEPARTMENT_ID NUMBER(4, 0) NOT NULL
, DEPARTMENT_NAME VARCHAR2(30 BYTE) NOT NULL
, MANAGER_ID NUMBER(6, 0)
, LOCATION_ID NUMBER(4, 0)
, CONSTRAINT DEPT_ID_PK PRIMARY KEY
DEPARTMENT_ID
USING INDEX
CREATE UNIQUE INDEX DEPT_ID_PK ON DEPARTMENTS (DEPARTMENT_ID ASC)
LOGGING
TABLESPACE "USERS"
PCTFREE 10
INITRANS 2
STORAGE
INITIAL 65536
MINEXTENTS 1
MAXEXTENTS UNLIMITED
BUFFER_POOL DEFAULT
ENABLE
LOGGING
TABLESPACE "USERS"
PCTFREE 10
INITRANS 1
STORAGE
INITIAL 65536
MINEXTENTS 1
MAXEXTENTS UNLIMITED
BUFFER_POOL DEFAULT
CREATE TABLE EMPLOYEES
EMPLOYEE_ID NUMBER(6, 0) NOT NULL
, FIRST_NAME VARCHAR2(20 BYTE)
, LAST_NAME VARCHAR2(25 BYTE) NOT NULL
, EMAIL VARCHAR2(25 BYTE) NOT NULL
, PHONE_NUMBER VARCHAR2(20 BYTE)
, HIRE_DATE DATE NOT NULL
, JOB_ID VARCHAR2(10 BYTE) NOT NULL
, SALARY NUMBER(8, 2)
, COMMISSION_PCT NUMBER(2, 2)
, MANAGER_ID NUMBER(6, 0)
, DEPARTMENT_ID NUMBER(4, 0)
, CONSTRAINT EMP_EMP_ID_PK PRIMARY KEY
EMPLOYEE_ID
USING INDEX
CREATE UNIQUE INDEX EMP_EMP_ID_PK ON EMPLOYEES (EMPLOYEE_ID ASC)
LOGGING
TABLESPACE "USERS"
PCTFREE 10
INITRANS 2
STORAGE
INITIAL 65536
MINEXTENTS 1
MAXEXTENTS UNLIMITED
BUFFER_POOL DEFAULT
ENABLE
LOGGING
TABLESPACE "USERS"
PCTFREE 10
INITRANS 1
STORAGE
INITIAL 65536
MINEXTENTS 1
MAXEXTENTS UNLIMITED
BUFFER_POOL DEFAULT
CREATE INDEX DEPT_LOCATION_IX ON DEPARTMENTS (LOCATION_ID ASC)
LOGGING
TABLESPACE "USERS"
PCTFREE 10
INITRANS 2
STORAGE
INITIAL 65536
MINEXTENTS 1
MAXEXTENTS UNLIMITED
BUFFER_POOL DEFAULT
CREATE INDEX EMP_DEPARTMENT_IX ON EMPLOYEES (DEPARTMENT_ID ASC)
LOGGING
TABLESPACE "USERS"
PCTFREE 10
INITRANS 2
STORAGE
INITIAL 65536
MINEXTENTS 1
MAXEXTENTS UNLIMITED
BUFFER_POOL DEFAULT
CREATE INDEX EMP_JOB_IX ON EMPLOYEES (JOB_ID ASC)
LOGGING
TABLESPACE "USERS"
PCTFREE 10
INITRANS 2
STORAGE
INITIAL 65536
MINEXTENTS 1
MAXEXTENTS UNLIMITED
BUFFER_POOL DEFAULT
CREATE INDEX EMP_MANAGER_IX ON EMPLOYEES (MANAGER_ID ASC)
LOGGING
TABLESPACE "USERS"
PCTFREE 10
INITRANS 2
STORAGE
INITIAL 65536
MINEXTENTS 1
MAXEXTENTS UNLIMITED
BUFFER_POOL DEFAULT
CREATE INDEX EMP_NAME_IX ON EMPLOYEES (LAST_NAME ASC, FIRST_NAME ASC)
LOGGING
TABLESPACE "USERS"
PCTFREE 10
INITRANS 2
STORAGE
INITIAL 65536
MINEXTENTS 1
MAXEXTENTS UNLIMITED
BUFFER_POOL DEFAULT
ALTER TABLE EMPLOYEES
ADD CONSTRAINT EMP_EMAIL_UK UNIQUE
EMAIL
USING INDEX
CREATE UNIQUE INDEX EMP_EMAIL_UK ON EMPLOYEES (EMAIL ASC)
LOGGING
TABLESPACE "USERS"
PCTFREE 10
INITRANS 2
STORAGE
INITIAL 65536
MINEXTENTS 1
MAXEXTENTS UNLIMITED
BUFFER_POOL DEFAULT
ENABLE;
ALTER TABLE DEPARTMENTS
ADD CONSTRAINT DEPT_LOC_FK FOREIGN KEY
LOCATION_ID
REFERENCES LOCATIONS
LOCATION_ID
ENABLE;
ALTER TABLE DEPARTMENTS
ADD CONSTRAINT DEPT_MGR_FK FOREIGN KEY
MANAGER_ID
REFERENCES EMPLOYEES
EMPLOYEE_ID
ENABLE;
ALTER TABLE EMPLOYEES
ADD CONSTRAINT EMP_DEPT_FK FOREIGN KEY
DEPARTMENT_ID
REFERENCES DEPARTMENTS
DEPARTMENT_ID
ENABLE;
ALTER TABLE EMPLOYEES
ADD CONSTRAINT EMP_JOB_FK FOREIGN KEY
JOB_ID
REFERENCES JOBS
JOB_ID
ENABLE;
ALTER TABLE EMPLOYEES
ADD CONSTRAINT EMP_MANAGER_FK FOREIGN KEY
MANAGER_ID
REFERENCES EMPLOYEES
EMPLOYEE_ID
ENABLE;
ALTER TABLE DEPARTMENTS
ADD CONSTRAINT DEPT_NAME_NN CHECK
(DEPARTMENT_NAME IS NOT NULL)
ENABLE;
ALTER TABLE EMPLOYEES
ADD CONSTRAINT EMP_EMAIL_NN CHECK
(EMAIL IS NOT NULL)
ENABLE;
ALTER TABLE EMPLOYEES
ADD CONSTRAINT EMP_HIRE_DATE_NN CHECK
(HIRE_DATE IS NOT NULL)
ENABLE;
ALTER TABLE EMPLOYEES
ADD CONSTRAINT EMP_JOB_NN CHECK
(JOB_ID IS NOT NULL)
ENABLE;
ALTER TABLE EMPLOYEES
ADD CONSTRAINT EMP_LAST_NAME_NN CHECK
(LAST_NAME IS NOT NULL)
ENABLE;
ALTER TABLE EMPLOYEES
ADD CONSTRAINT EMP_SALARY_MIN CHECK
(SALARY > 0)
ENABLE;
COMMENT ON TABLE DEPARTMENTS IS 'Departments table that shows details of departments where employees
work. Contains 27 rows; references with locations, employees, and job_history tables.';
COMMENT ON TABLE EMPLOYEES IS 'employees table. Contains 107 rows. References with departments,
jobs, job_history tables. Contains a self reference.';
COMMENT ON COLUMN DEPARTMENTS.DEPARTMENT_ID IS 'Primary key column of departments table.';
COMMENT ON COLUMN DEPARTMENTS.DEPARTMENT_NAME IS 'A not null column that shows name of a department. Administration,
Marketing, Purchasing, Human Resources, Shipping, IT, Executive, Public
Relations, Sales, Finance, and Accounting. ';
COMMENT ON COLUMN DEPARTMENTS.MANAGER_ID IS 'Manager_id of a department. Foreign key to employee_id column of employees table. The manager_id column of the employee table references this column.';
COMMENT ON COLUMN DEPARTMENTS.LOCATION_ID IS 'Location id where a department is located. Foreign key to location_id column of locations table.';
COMMENT ON COLUMN EMPLOYEES.EMPLOYEE_ID IS 'Primary key of employees table.';
COMMENT ON COLUMN EMPLOYEES.FIRST_NAME IS 'First name of the employee. A not null column.';
COMMENT ON COLUMN EMPLOYEES.LAST_NAME IS 'Last name of the employee. A not null column.';
COMMENT ON COLUMN EMPLOYEES.EMAIL IS 'Email id of the employee';
COMMENT ON COLUMN EMPLOYEES.PHONE_NUMBER IS 'Phone number of the employee; includes country code and area code';
COMMENT ON COLUMN EMPLOYEES.HIRE_DATE IS 'Date when the employee started on this job. A not null column.';
COMMENT ON COLUMN EMPLOYEES.JOB_ID IS 'Current job of the employee; foreign key to job_id column of the
jobs table. A not null column.';
COMMENT ON COLUMN EMPLOYEES.SALARY IS 'Monthly salary of the employee. Must be greater
than zero (enforced by constraint emp_salary_min)';
COMMENT ON COLUMN EMPLOYEES.COMMISSION_PCT IS 'Commission percentage of the employee; Only employees in sales
department elgible for commission percentage';
COMMENT ON COLUMN EMPLOYEES.MANAGER_ID IS 'Manager id of the employee; has same domain as manager_id in
departments table. Foreign key to employee_id column of employees table.
(useful for reflexive joins and CONNECT BY query)';
COMMENT ON COLUMN EMPLOYEES.DEPARTMENT_ID IS 'Department id where employee works; foreign key to department_id
column of the departments table';

Hi how can i implement the scenario.......plz reply asap.........

HI folks,
i have a typical problem in bex .
my scenario is:i am having 2 values say 'x','y'.
i want to implement a formula like x-y.
if the x value is negative then i have to get the result as negative after the 'y' value get subtracted.if 'x' is positive, i have to get positive value after subtracting 'y' value.
please let me know how can i implement this scenario in bex.
by using a formaula or condition or anything else. please let me know clearly including the expression asap.
Best reagards,
ashok.

answered

Recovered message keeps loading up. How can I stop this?

recovered message keeps loading up. How can I stop this?

Your post makes no sense. Please provide details of your problem. Please detail ALL you have done so far in the way of troubleshooting? Need this info to avoid the been there done that scenarios.
What type of messages are you talking about? Recovered from where?
It would help us to know which computer model you have, which OS & version you're using, how much RAM, etc. You can have this info displayed on the bottom of every post by completing your system profile and filling in the information asked for.
This will help in providing you with the proper and/or correct solutions.

How can we use Adobe's Digital Publishing Suite given this scenario

I have a question regarding a very specific scenario as it applies to Adobe Digital Publishing that I am having trouble finding an answer to.
We are a small design firm that produces small-run, proprietary-information, official documents.
Each document is branded to one of our clients, but each document title's design is entirely unique even when done for the same client.
Our clients then selectively distribute these documents to a small number (max 200) of their propective clients (NO GENERAL DISTRIBUTION -- NO APP STORE or iTUNES -- NO CHARGE).
It would be nice that each of our clients could have a branded Adobe Viewer with which their selected prospective clients could view only those documents sent to them (PUSHED); NOT everyone with a client-branded Adobe Viewer would be PUSHED the same document.
And similar to the documents being PUSHED to only specific prospective clients of our clients, that our client could subsequently PULL / delete a document from the prospective client's viewer when the document has expired (besides being promotional documents, they are legal as well, and when expired, need to be withdrawn from readership).
So, how is something like this done? What Adobe DPS pricing plan applies?
Would it be a Single plan, but for each client branded viewer? The Professional and Enterprise pricing setup is excessive given our extremely small scale of extremely specific directed distribution for no revenue from that distribution.
Please help me understand, since I cannot find such an answer online.
Thank you.
Mark

If I understand you correctly, you would need an Enterprise level account for that.
Bob

Everytime I open iphoto, my computer tells me A photo has been found in the iPhoto Library that was not imported. Would you like to import it. no matter what I do, iphoto puts the pic in recovered files. How do I fix this?

Everytime I open iphoto, my computer tells me, A photo has been found in the iPhoto Library that was not imported. Would you like to import it. If I import it, a message comes up Unreadable file, the following file could not be imported. them it tells me where the file is and it cannot be opened. If I do not import, then it says,The photo has been placed in the folder /Users/patrick*******/Pictures/iPhoto Library Recovered Photos_4. It will just keep adding to recvovered photos. This drives me crazy!!!!!!! How do I fix this?

I had this problem some months ago and the following solution from Terrence Delvin put things right:
Go to your Pictures Folder and find the iPhoto Library there. Right (or Control-) Click on the icon and select 'Show Package Contents'. A finder window will open with the Library exposed.
Look there for a Folder called 'Import' or 'Importing'.
Drag it to the Desktop. *Make no other changes*.
Start iPhoto. Does that help?
If it does then look inside that folder on your desktop. Does it contain anything you want? If not you can trash the folder.
However, since connecting a memory stick to my computer, I now have the same problem again. This time there is no folder called 'Import' or 'Importing' so what should I do?

How to use Oracle Spatial in this scenario

My scenario is like that:
I'm very new to Oracle Spatial
I'm building an application that will be based on asp.net.(I am
confident about .net)
As per my client requirement there are some kml file in one archive
folder.
Let me give an example:
say there is a kml file for region A.(latitude say 36 n to 40 n and
longitude is 110 w to 115 w) already in the archive folder.
Now if a new kml file(say A1.kml) that has been created by the user
and say its latitude and longitude are respectively 37n and 112w. As we clicked A.kml, google earth is opened up for the region A and as
we move our mouse cursor to more deeper more polygons are visible.
eventually polygon for A1.kml is also visible and definitely which is
inside the polygon for region A.
How can I achieve this thing by using oracle spatial 10g? ---(it's one of my senior's advice to use "oracle spatial 10g" in this scenario)
I'm not too sure whether I can able to make it clear to u about my
situation; plz xcuse me if I'm wasting ur valuable time.

Hi,
This link helped me a lot!
http://www.oracle.com/technology/pub/articles/rubio-mashup.html
Hope it could help you too.
Best regards,
Luiz

How to setup RDP or VDI services in this scenario

Hi there! I've this scenario:
a. 20 thin clients (with OS Windows 7 Embedded Edition)
b. Two physical servers Core1 and Core2, with 64GB of RAM, 2 socket CPU, 8 cores, OS Windows Server 2012 R2, and HyperV roles
c. two domain controllers as child virtual machines with 2 GB running (PDC on Srv1 and BDC on Srv2)
d. ExchangeServer 2013 running as child vm on Core1, with 32 GB RAM.
I've licenses for Windows Server 2008 R2, and Windows Server 2012, and MS office 2013
I want clients, after to connect with RDP, to use outlook 2013 for emails.
Now, i want to setup services for 20 thin clients. This is new for me...and i want your suggestions how to setup up them on this scenario. Have i to use RDP services, or VDI???
Regards!
Lasandro Lopez

Hi,
According to your comment, I can say that Share permissions are automatically set up by the management tools once it will be created. We can use windows PowerShell or server manager to manage UPD. Also remember that User profile disks are for a single collection
only. A user connecting to two different collections will have two separate profiles.
Here providing important link to understand UPD. (You can refer below link for Server 2012 R2)
1. Easier User Data Management with User Profile Disks in Windows Server 2012
2. Working with User Profile Disks on Session-Based Desktop Deployments
Hope it helps!
Thanks.

Hello can anyone explain me how to solve this scenario.

Hello Experts,
Today i have attended an interview .. the interviewer has given me this scenario and gave me a system and asked me to solve this scenario practically..
So this is the scenario.. How to solve can any one send me some idea and if possible probable solution..
scenario.
IBM sells Notebooks and Machines through dealers.they provide direct selling to corporates.
.they give 10% discount to orders of 10 pcs and more.
scope
.masters
maintaining dealers
maintaining product list and price
maintainig corporate details.
transactions
no of orders placed and delivery date.
reports
. dealer wise order report
. company stock report
.sales report monthly and yeraly wise.
So what i am asking you is kindly guide me how to approach to solve this scenario.

this is the exception,I don't know why this exception exist sometimes and isn't exist sometimes
java.io.UTFDataFormatException
 at java.io.ObjectInputStream$BlockDataInputStream.readUTFSpan(ObjectInputStream.java:2963)
 at java.io.ObjectInputStream$BlockDataInputStream.readUTFBody(ObjectInputStream.java:2888)
 at java.io.ObjectInputStream$BlockDataInputStream.readUTF(ObjectInputStream.java:2701)
 at java.io.ObjectInputStream.readString(ObjectInputStream.java:1536)
 at java.io.ObjectInputStream.readTypeString(ObjectInputStream.java:1344)
 at java.io.ObjectStreamClass.readNonProxy(ObjectStreamClass.java:540)
 at java.io.ObjectInputStream.readClassDescriptor(ObjectInputStream.java:762)
 at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1503)
 at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1435)
 at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1626)
 at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
 at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
 at REDCSecurity.RSAKeyPair.readFromFile(RSAKeyPair.java:122)
 at REDCTools.USBHandler.getPrivKey(USBHandler.java:99)
 at REDCClient.Disconnected.compare(Disconnected.java:289)
 at REDCClient.Disconnected.authenticate(Disconnected.java:185)
 at REDCClient.Disconnected.connect(Disconnected.java:75)
 at REDCClient.ConnectionAgent.connect(ConnectionAgent.java:28)
 at REDCClient.testConnect.main(testConnect.java:13)

How to recover in this scenario

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