PMON always report error like below
*** SESSION ID:(1.1) 2001.
*** 2001.
kssxdl: error deleting SO: c00000000ff612b0, type: 15, owner: c00000000ffa4fa8, flag:
ORA-24756: transaction does not exist

and later (after a few days)

my db's all rollback segments become full

and I have to shutdown abort

can anyone help me?

thank you