_EDC_STOR_INITIAL

Sets the initial size of the internal library storage subpool acquired above the line. The default subpool storage size is 12K. When _EDC_STORE_INITIAL is set, its value string is translated to its decimal integer equivalent. This integer is then the new setting of the subpool storage increment size. The setting of this environment variable is only effective if it is done before the first I/O in the enclave.

The _EDC_STORE_INITIAL value must be greater than zero, and must be a multiple of 4K. If the value is less than zero, the default setting of 12K is used. If the value is not a multiple of 4K, then it is rounded up to the next 4K interval. If _EDC_STORE_INITIAL is set to an invalid value that must be modified internally to be divisible by 4K, this modification is not reflected in the character string that appears in the environment variable table.

Consider the case where setenv() is called from CEEBINT as follows, and the CEEBINT user exit linked to the application:

   setenv("_EDC_STORE_INITIAL","16000",1);

Internally, the storage subpool is initialized to 16384 (that is, 16K). However, the subsequent call, shown in the following example, returns "16000", as set by the setenv() call:

   getenv("_EDC_STORE_INITIAL");

Note: _EDC_STOR_INITIAL is not supported in AMODE 64. In AMODE 64, this environment variable is replaced by the IOHEAP64 runtime option.