| DB2 or Database 2 is a relational model database that | | | | You may have issued COMMENT ON PACKAGE |
| is designed by IBM. It is used by many reputed | | | | without providing a version. Because of this, DB2 has |
| organizations as the backend support. It gives you the | | | | internally opted for the NULL version but could not find |
| freedom to operate the databases either from a | | | | the NULL version. Another cause for this error is that |
| command line argument or from its GUI (Graphic User | | | | the database is corrupted. |
| Interface). However, sometimes the DB2 database | | | | Resolution |
| gets corrupted due to various reasons such as bugs in | | | | To resolve this situation, you should perform the |
| the database software, database header corruption, | | | | following steps: |
| improper system shutdown, virus infections, etc. In such | | | | -Verify that the SQL statement is correct by checking |
| cases, you should try to resolve the error using | | | | the object name including the qualifiers. |
| appropriate methods. If you are not able to recover | | | | -If the SQL statement is correct, then check the object |
| DB2 database, then you should use a third-party DB2 | | | | exists in the database. If it does, then execute the SQL |
| database recovery software to do the needful. | | | | statement again. |
| Consider a scenario wherein you are using DB2 | | | | -However, if the null version is not there, then you |
| version 8 database. You run the Select query to fetch | | | | should drop the specific version by using the VERSION |
| some records, but it fails to execute. An error | | | | clause. This should resolve the issue. |
| message is displayed, that is: | | | | However, if you are facing the similar problem even |
| "DB2 SQL error: SQLCODE: -204, SQLSTATE: 42704 | | | | after performing the aforementioned steps it means |
| DB2ADMIN.TABLE" [SELECT | | | | that the database is corrupted. In such cases, you |
| * FROM IDSC.TABLE]" | | | | should use a third-party db2 database repair software |
| Where, db2admin is the user id. | | | | to recover database. Such tools are read-only in |
| Cause | | | | nature that do not overwrite the existing database |
| The root cause of this erroneous situation is that the | | | | while scanning using fast yet sophisticated scanning |
| identified object is not defined in the DB2 subsystem. | | | | algorithms. |