Hi,
When I run the SQL as parallel execution using Parallel hint, I got ” ORA-08103: object no longer exists ” error.
Details of error are as follows.
SQL> SELECT REPORT_DAY,count(*) FROM MEHMET.DEVECI 2 GROUP BY REPORT_DAY; SELECT REPORT_DAY,count(*) FROM MEHMET.DEVECI * ERROR at line 1: ORA-12801: error signaled in parallel query server P00B, instance msddb01.msd.local:MSD1 (1) ORA-08103: object no longer exists
This error is related with Partitioned table and Parallel execution on Cluster Nodes.
To solve this problem, You can run the same SQL as follows.
set the following trace events, then run the same SQL as follows.
alter session set events '10384 trace name context forever , level 16384';
SQL> alter session set events '10384 trace name context forever , level 16384'; Session altered. SQL> ALTER SESSION SET PARALLEL_FORCE_LOCAL=TRUE; Session altered. SQL> SQL> SELECT /*+ PARALLEL(16) */ REPORT_DAY,count(*) FROM MEHMET.DEVECI 2 GROUP BY REPORT_DAY; REPORT_D COUNT(*) -------- ---------- 20200101 143879088 20200102 143900001 20200103 143919894 20200104 143939085 20200105 143949689 20200106 143974041 20200107 143999241 20200108 144019865 20200109 144040582 20200110 144062839 20200111 144083914 REPORT_D COUNT(*) -------- ---------- 20200112 144095191 20200113 144120876 20200114 144141403 20200115 144167352 15 rows selected. SQL>
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https://ittutorial.org/oracle-database-19c-tutorials-for-beginners/