Using SQL*Loader WIth Parameter NO_INDEX_ERRORS=TRUE Causes An Inconsistent Table State
(Doc ID 1396694.1)
Last updated on OCTOBER 10, 2019
Applies to:Oracle Database - Enterprise Edition - Version 22.214.171.124 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
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Oracle Database Cloud Exadata Service - Version N/A and later
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You started SQL*Loader in direct path mode with parameter NO_INDEX_ERRORS=TRUE and observed an inconsistent table state after the load. The next test case demonstrates this:
create table t (x number, constraint t_pk primary key(x));
-- SQL*Loader control file ldr.ctl
options (direct=true, errors=0, no_index_errors=true)
into table t
fields terminated by ','
-- start SQL*Loader
#> sqlldr test/test control=ldr.ctl
This terminates with:
The log file contains:
ORA-01722: invalid number
Specify SKIP=1 when continuing the load.
The following index(es) on table T were processed:
index TEST.T_PK loaded successfully with 1 keys
MAXIMUM ERROR COUNT EXCEEDED - Above statistics reflect partial run.
1 Row successfully loaded.
1 Row not loaded due to data errors.
0 Rows not loaded because all WHEN clauses were failed.
0 Rows not loaded because all fields were null.
SQL> insert into t values (1);
insert into t values (1)
ERROR at line 1:
ORA-00001: unique constraint (TEST.T_PK) violated
Note: This occurs *only* when ERRORS=<n> is specified. It seems, when the count of allowed errors is exceeded, the index remains loaded but not the table. This explains count 0 in table but ORA-1 from index when an already existing value is again inserted.
If you take out ERRORS=0 from control file above, then the behavior is the expected one:
- the count from table shows 1 row
- the index is loaded with 1 key
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