awk '/Rec #0x31/,/^.$/{print}' /export/home/oracle/admin/cdb/udump/cdb_ora_9177.trc
* Rec #0x31  slt: 0x04  objn: 110757(0x0001b0a5)  objd: 110757  tblspc: 0(0x00000000)
*       Layer:  11 (Row)   opc: 1   rci 0x00
Undo type:  Regular undo    Begin trans    Last buffer split:  No
Temp Object:  No
Tablespace Undo:  No
rdba: 0x00000000
*-----------------------------
uba: 0x00801454.0608.30 ctl max scn: 0x084a.957ddef0 prv tx scn: 0x084a.957de34d
KDO undo record:
KTB Redo
op: 0x03  ver: 0x01
op: Z
KDO Op code: IRP row dependencies Disabled
  xtype: XA  bdba: 0x00405df2  hdba: 0x00405df1
itli: 2  ispac: 0  maxfr: 4863
tabn: 0 slot: 0(0x0) size/delt: 5
fb: --H-FL-- lb: 0x0  cc: 1
null: -
col  0: [ 1]  58