ssh sqlplus command has $ symbol and it gets substituted

I'm Running some SQLPLUS code over ssh. ssh -q node1 'export ORACLE_SID=DB11D_1;ORAENV_ASK=NO;. oraenv >/dev/null 2>&1;sqlplus -s / as sysdba << ENDSQL whenever sqlerror exit 1 alter system set wallet open identified by "Passwo$1"; exit; ENDSQL' It looks like the $1 in the password "Passwo$1" gets substituted. And that's causing the command to fail. The command ends up turning into alter system set wallet open identified by "Passwo" * ERROR at line 1: ORA-28353: failed to open wallet Any idea how do I preserve the "$1" in the SQLPLUS command? I have tried the below - alter system set wallet open identified by \"Passwo$1\"; - alter system set wallet open identified by \\\"Passwo$1\\\"; - alter system set wallet open identified by '\""Passwo$1""\'; I cannot add an escape to the $ symbol in the password. So I can't do - alter system set wallet open identified by "Passwo\$1"; Thanks