Oracle resource failover due to "ORA-00020: maximum number of processes (150) exceeded"

Issue

• Oracle resource failover to other nodes, and below logs are seen:

  Dec 07 11:33:59 [7777] xxxxxxxx       crmd:     info:process_graph_event:    Detected action (2.122) xxxxxx-Oracle_monitor_120000.286=unknown error: failed

  Dec 07 11:34:03 [7774] xxxxxxxx       lrmd:     info: log_execute:    executing - rsc:xxxxxx-Oracle action:stop call_id:409
  Dec 07 11:34:03 [7777] xxxxxxxx       crmd:     info: process_lrm_event:  Operation xxxxxx-Oracle_monitor_120000: Cancelled (node=xxxxxxxx, call=286, confirmed=true)
  oracle(xxxxxx-Oracle)[19244]:  2016/12/07_11:34:03 WARNING: 'dbasql getipc' failed: ERROR:
  ORA-00020: maximum number of processes (150) exceeded

  ORA-24324: service handle not initialized
  ORA-01041: internal error. hostdef extension doesn't exist
  ORA-24323: value not allowed
  ORA-24324: service handle not initialized
  ORA-01041: internal error. hostdef extension doesn't exist
  ORA-24323: value not allowed
  ORA-24324: service handle not initialized
  ORA-01041: internal error. hostdef extension doesn't exist
  ORA-24323: value not allowed