Running sp_wallet in auto-open mode on target results in “oraerr = 942” and “Probably internal failure” (4298440)

The following errors are observed when Running sp_wallet in AUTO-OPEN MODE on a target:

$./sp_wallet --auto-open     (where $ denotes the OS prompt)

Enter Oracle SID (or TNS alias if RAC) [SID]:     (here SID is the Oracle SID of the database on this server)

Enter wallet password:

Loading wallet into SharePlex as well

oraerr = 942

Probably internal failure

The running of sp_wallet is successful, though:

$./sp_wallet

Enter Oracle SID (or TNS alias if RAC) [SID]:

Enter wallet password:

Wallet loaded into SharePlex