i am currently working in mainframes in cobol(old version without OOPS concepts. I wish to be more specialised in specific product or language or tool in mainframes, so willing to take up training and learn one.what is the most widely asked tool or specific package in mainframes that has a great demand in market as of now?

1747

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483

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509

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40

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584

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421

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110

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552

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636

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741

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558

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554

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3

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