The GoldenGate data pump was abending on the source:
GGSCI (uiiompd17) 1> info all Program Status Group Lag at Chkpt Time Since Chkpt MANAGER RUNNING EXTRACT ABENDED DPUMPxx 00:00:00 04:00:29 EXTRACT RUNNING EXAxxxx 00:00:00 00:00:02
The GoldenGate error log contained the below message:
2016-12-17 07:22:13 ERROR OGG-01031 Oracle GoldenGate Capture for Oracle, dpumprp.prm: There is a problem in network communication, a remote file problem, encryption keys for target and source do not match (if using ENCRYPT) or an unknown error. (Reply received is Unable to open file "/ggs//dirdat/rp013263" (error 11, Resource temporarily unavailable)).
The file directory that was being reported was for the target of the GoldenGate process. On the target side, the file did exist and there were no issues with the file system, mount point etc. I moved the file as follows:
mv /ggs//dirdat/rp013263 /ggs/ /dirdat/rp013263.old
I then restarted the abended data pump and normal processing was resumed.