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What should I do if I get locking errors from either Easysoft Data Access for Zortec System Z or my System Z application?

The most likely reason is that your Easysoft Data Access (EDA) for Zortec System Z locking mode is incorrect. Try changing it by running the following script, which is installed on the server:

cd /usr/local/easysoft/isam/lib
./disam_select.sh

The output is:

Disam Locking Mode Selection
	      
** NOTE : All locking modes may not be available on all platforms **
	      
1. Disam 96 (ISLOCKING = 1 C7LOCKING = 0) (cisam pre 4.1)
2. Disam 96 (ISLOCKING = 2 C7LOCKING = 0) (cisam pre 5.0)
3. Disam 96 (ISLOCKING = 2 C7LOCKING = 1) (cisam 5.0 > 7.1) [default]
4. Disam 96 (ISLOCKING = 2 C7LOCKING = 2) (cisam 7.2)
5. Disam 96 (ISLOCKING = 2 C7LOCKING = 2) (cisam 7.26)

Select required locking mode? (1-5) [3]:

If you don't know what version of C-ISAM you're running, cycle through all versions. One of them will set the locking mode correctly. EDA for Zortec System Z supports locking modes for all versions of C-ISAM.