INTERVIEW QUESTIONS MAINFRAME IMS DETAILS

Question: What for procopt is used? List some of them?

Answer: Procopt parameter specifies PROCESSING OPTIONS that define the type of processing that can be performed on a segment. ex: K, G, L, LS, A ,AS, I, IS. procopt=k---means , the segment is key sensitive procopt=g- the segment is data sensitive (like read only) L- Load mode , means we can load data base from scratch A- Get, Insert, Delete, Replace- means it allows the program to issue all those calls I-insert mode. That means only insert calls with insert mode can be issued

Procopt parameter specifies PROCESSING OPTIONS that define the type of processing that can be performed on a segment. ex: K, G, L, LS, A ,AS, I, IS. procopt=k---means , the segment is key sensitive procopt=g- the segment is data sensitive (like read only) L- Load mode , means we can load data base from scratch A- Get, Insert, Delete, Replace- means it allows the program to issue all those calls I-insert mode. That means only insert calls with insert mode can be issued Source: CoolInterview.com

ANS:PROCOPT parameter can be coded with PSB control block.It specifies what processing should be done to the segment.It can be applicable to the whole database aswelas to a particular segment type.Basic procopts are as follows:
G read only
R replace, includes G
I insert
D delete, includes G
A get and update, includes G, R, I, D
K used on SENSEG statement; program will have key-only sensitivity to this segment

L load database
Secondary PROCOPT codes are as follows:
E exclusive use of hierarchy or segments
O get only, does not lock data when in use
P must be used if program will issue path call using the D command code
S sequential (LS is required to load HISAM and HIDAM databases; GS gets in ascending sequence)

Source: CoolInterview.com

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