PDCR services often become unused

Hi,

Please advice what other solution i have resolve pdcr crashing / become unused

below extarct of spoold.log spoold.log

: ERROR: unexpected chunk number 196 (expected 27) for toast value 336282189 July 22 22:17:47 ERR [1075325248]: 25004: database query failed

/Storage/data # /opt/pdcr/bin/crcontrol --queueinfo
total queue size : 335802609
creation date of oldest tlog : Mon Jul 21 12:17:36 2014

Beside increase exiting physical memory, what other option i have to make my pdcr service stabil.

Is it anything error on the data which try to write into content router?

//logen