The Trigger is giving following exception

java.sql.SQLExc eption: ORA-04091: table PSCONTENT.VGNAS CHANNEL is mutating, trigger/function may not see it ORA-06512: at "PSCONTENT.CHEC K_CHANNEL_UNPUB LISH", line 4 ORA-06512: at "PSCONTENT.CHEC K_CHANNEL_UNPUB LISH_TR", line 1 ORA-04088: error during execution of trigger ............... ............... ..

// Trigger
CREATE OR REPLACE TRIGGER check_channel_u npublish_tr...