rsync is not correctly working

We are using Red Hat linux system.

I am transferring my rman backup files to another server.

Here is the command i am using to transfer the files.

/usr/bin/rsync -avpP --delete /xyz/xyz/ 99.99.999.99::db110bkp

Here is the rsync version.

>rsync --version
rsync  version 3.0.6  protocol version 30
Copyright (C) 1996-2009 by Andrew Tridgell, Wayne Davison, and others.
Web site: rsync
Capabilities:
    64-bit files, 64-bit inums, 64-bit timestamps, 64-bit long ints,
    socketpairs, hardlinks, symlinks, IPv6, batchfiles, inplace,
    append, ACLs, xattrs, iconv, no symtimes

rsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you
are welcome to redistribute it under certain conditions.  See the GNU
General Public Licence for details.

Here is the log RMAN backup shell script log file error message...

RMAN> RMAN> 2> 3> 4> 5> 6> RMAN> @ERROR: max connections (1) reached -- try again later
rsync error: error starting client-server protocol (code 5) at main.c(1503) [sender=3.0.6]

I am not able to find any solution for this error message through websearch.

Can any one please help me on this?

Sorry for not using tags.. I will make sure, i have tags when i use the code in future..

---------- Post updated at 09:02 PM ---------- Previous update was at 09:01 PM ----------

Can any one please help me on my issue?