[Info-ingres] ckpdb stalled

Ingres 2.6 on Solaris

Ckpdb +j seems to get stalled.
Below is the truss output.
Is it normal or does it indicate possible bug ?

Thanks

signotifywait() (sleeping...)
lwp_cond_wait(0xFF2934F0, 0xFF293500, 0xFF28CD88) (sleeping...)
lwp_sema_wait(0xFEF0DE60) (sleeping...)
door_return(0x00000000, 0, 0x00000000, 0) (sleeping...)
lwp_cond_wait(0xFF2934F0, 0xFF293500, 0xFF28CD88) Err#62 ETIME
lwp_cond_wait(0xFE7A7560, 0xFE7A7548, 0x00000000) (sleeping...)
signotifywait() (sleeping...)
lwp_cond_wait(0xFF2934F0, 0xFF293500, 0xFF28CD88) (sleeping...)
lwp_sema_wait(0xFEF0DE60) (sleeping...)
door_return(0x00000000, 0, 0x00000000, 0) (sleeping...)