SAP Sybase IQ uses a shared memory segment and several semaphores for communication between the client and server on the same machine.
Shared memory is the default communications mechanism when the client and server are on the same system. Shared memory is configured automatically, and starts automatically.
Local connections through shared memory are not supported for Solaris x64 systems. Use standard network connectivity by adding the parameters -host <hostname> and -port <portnumber> to the client connection string.
Administration: Database > Connection and Communication Parameters