Answer / raghav

Seems you are asking about Journalling concept..

Journalling is basically the recording activity of database files (PF) which records all the changes done to the PF like Add, update, delete, Open file and close file etc.

Following are the commands used for Journalling:

1. CRTJRNRCV - Create Journal Receiver
2. CRTJRN - Create Journal
3. STRJRNPF - Start Journal on Database file
4. ENDJRNPF - End Journal

When we use any keyword like FIFO,LIFO, at file level but whenever we check by runqry we couldn't find answer in FIFO,LIFO,FCFO etc so how we check the answer.

2 Answers  

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Why journalling is compulsory before commitment control?

1 Answers  

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When u create a PF and did not fill up Maint parameter, then by default which access path will the system take & why

2 Answers   HCL,

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1. How can I create a LF using crtlf command based on a particular member in a multimember PF? Where I have to specify the member name? 2. How to differentiate between the types of join from a Join logical file DDS. Is it possible to have different types of Join Logical files? 3.Any performance difference between Opnqrf and Embedded SQL? When I should prefer Opnqryf and when SQL? 4. I know access path is the path chosen by the program to retrieve data. It can be of keyed access path or arrival sequence. *IMMED- *IMMED description says access path is updated each time record is added or deleted from a member. - What is updating here? *REBLD - The access path is completely rebuilt each time a file member is opened. The access path is maintained until the member is closed, then the access path is deleted. - I am not able to understand this completely. Could anyone explain these more clearly? 5.What is the purpose of using activation group. I know it is a resource allocator, but other than this any other benefits of using an activation group?

2 Answers   IBM,

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There are six records in a file and we are going to update that records and used commit operation when it complete the update but suppose when it updating the third record,a error occured and operation failed.Is previously two records will be update or whole operation will be rollback? Please confirm it.

2 Answers  

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can any one tell me what is meant by PSSR? Kindly elaborate it...

1 Answers  

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What is the interactive job? What is the batch job?

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I have a PF with out any data but the dependent LF is having data?

1 Answers   HCL,

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Hi, Please give the answer to this question? I have Phisical file with 100 records,there is no any duplicate records in this pf.Based on this pf one Logical file i have used.But this lf is viewing only 80 records only of that pf?What is the reason for this?Please give me answer?

4 Answers   IBM,

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i have a PF,it contains 5 members,how to access particular member data from logical file ?and what is the use of member in PF

3 Answers  

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Q.1 how to implement the commitment control. 2.how to control commitment control from external program.

7 Answers   IBM,

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What is FORMAT keyword and its use?

0 Answers  

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