Upgraded to 5.1.01 and Secure+ SSL transmissions get an S0C4 in SCSSLZIN. Then Connect:Direct locks up and has to be canceled.
*SABA001I - SCSSLZIN S0C4 U0000 ID=P STATE=$ TASK#=0015 PSW=078D0400 A34A8AE0 (CEEPLPKA+0008D2F0)
* PROCNO=00007825 TCA@=25B00480(SUBTASK) LDPT=00000000
Connect:Direct had an ENVIRON DD which was starting SSL tracing. The z/OS operating system does not allow I/O in SRB mode. Connect:Direct initialization parameter ZIIP was set to ALL. ZiiP only runs in SRB mode.
Resolving the problem
When using ZiiP in Connect:Direct do not turn on SSL tracing without first restarting Connect:Direct with the ZIIP initialization parameter set to NONE.