Oracle Database Discussions

Hi,

please suggest what this wait event ( P1 ) means.

How to resolve this

What cause this

EVENT                                                                   SID         P1         P2 SECONDS_IN_WAIT
rdbms ipc message                                                      2747        300          0               1
rdbms ipc message                                                      2752        299          0               2
rdbms ipc message                                                      2744        500          0               3
rdbms ipc message                                                      2737       6000          0               5
rdbms ipc message                                                      2735        300          0              11
rdbms ipc message                                                      2738      18449          0              22
rdbms ipc message                                                      2743        300          0             160
rdbms ipc message                                                      2754        300          0             333
rdbms ipc message                                                      2745     180000          0             463
rdbms ipc message                                                      2742        100          0            5859
rdbms ipc message                                                      2753        300          0          224068

Thanks In Advance.