How and when to use GU and GHU calls is perfectly needed to write logic in IMS DB programs. Read more.
Useful and most frequently used IMS DB command codes complete list you can read here.
Many programmers not aware how to handle U0777 error that occurred for dead lock scenario in IMS DB database. There is a simple solution available for this. While writing your program just follow these steps, so that you will not be received an error U0777
IMSDB Mandatory statement is DLITCBL for all COBOL and IMSDB programs. Read for full details
The complete list of DL/I functions that you need to write a COBOL program for IMS DB database. This list helps you write your programs so effectively. The main use of DL/I functions is to interact with database and to manipulate segments in IMS DB database.
In IMS DB, there are strong reasons why monitoring log activities is really needed. The DBA or Senior programmer must watch the logs about what activities happened on the database. In IMS DB the log file contains 3 key records. Read for more.
Default CMPAT=N in PSBGEN, it means only can be used in Batch processing. Read more…
Quick refresher on why you always need Qualified SSAs over un-qualified SSAs in your IMS DB programs.