“ORA-12577 occurred when reading from a LOB” on kernel 7.41
I have seen a couple of dumps occured with the new kernel, the issue seems to be fixed with the latest DBSL.
The DBIF_REPO_SQL_ERROR dump and developer trace refer to such entiries:
C OCILobRead2(substring) failed with SQL error 12577:
C ORA-12577: Message 12577 not found; product=RDBMS; facility=ORA
C <–OCILobRead2(con=0, BLOBloc=x5dce058, slen=0, offs=1, buf=x9bc2380, bln=65536, ONE_PIECE, amt=0) -> orc=12577
C used+free LL chunks: num=1+3, cnt=0+0, max=1+3; all locators: Lb.cnt=4, Lb.max=20, Lb.itp=0000NULL
C Used LOB locators: 0 itp=x5d435c0, locarr=x5d6bca0, cnt=0, max=1
C # 0 LOB locator = x5dce058
C Free LOB locators: 1 itp=x5ec4b80, locarr=x5ec4c00, cnt=0, max=1
C # 0 LOB locator = x631dd90
C 2 itp=x6b2c130, locarr=x6a3ea30, cnt=0, max=1
C # 0 LOB locator = x60a1ec0
C 3 itp=x69f69e0, locarr=x5f67bf0, cnt=0, max=1
C # 0 LOB locator = x5fffbf0 >> total memory 96 bytes
C LOB locators of current transaction:
C Lb.locarr = x5dd46d0, Lb.cnt = 4
C Lb.locarr=x5dce058, sch=x5d4ace0, len=7412
C Lb.locarr=x631dd90, sch=0000NULL, len=0
C Lb.locarr=x60a1ec0, sch=0000NULL, len=0
C Lb.locarr=x5fffbf0, sch=0000NULL, len=0
Please refer as well to the KBA 1898521 – “Process list grows after ORA-01017; ORA-00020”.
With the new patches under point 2 several bugs are fixed including ora-12577.
So if you get such dumps first apply the latest DBSL before opening an incident.