Compatibility across releases for clearcase

Posted on May 8, 2008

Even the simplest Rational ClearCase operation invokes a communications chain that can involve several components. For example, the act of checking out a file element involves a client program (running on the developer’s workstation), which executes in a particular view (located on that workstation or elsewhere) and uses a particular VOB (typically located on a dedicated VOB server host). If all components in this operation are running the same version of Rational ClearCase, compatibility is guaranteed.

Table 11, Table 12, and Table 13 show the compatibility paths if all hosts are not running the same versions of Rational ClearCase. In these tables, client means Rational ClearCase client software. In each table, a component in a row can use a component in a column if yes appears at the intersection of the row and column.

Table 11. Compatibility of views with VOBs
2002.05.00 VOB 2003.06.00 VOB 7.0 VOB
2002.05.00 view yes yes yes
2003.06.00 view no yes yes
7.0 view no no yes

Note:
This table does not apply to Rational ClearCase LT, because in ClearCase LT, all VOBs and views must reside on the same server host.

Table 12. Compatibility of clients with views
2002.05.00 view 2003.06.00 view 7.0 view
2002.05.00 client yes yes yes
2003.06.00 client no yes yes
7.0 client no no yes

Table 13. Compatibility of clients with VOBs
2002.05.00 VOB 2003.06.00 VOB 7.0 VOB
2002.05.00 client yes yes yes
2003.06.00 client no yes yes
7.0 client no no yes

Specifically, these tables make the following points:

  • Rational ClearCase 7.0 clients can use only views and VOBs that reside on Rational ClearCase 7.0 hosts.
  • Rational ClearCase 2003.06.00 clients can use views and VOBs that reside on 2003.06.00 or 7.0 hosts.

In general, earlier versions of clients can access servers that are running the same or later versions, but current clients can access only servers that are running the same version. An exception is that 7.0 clients and servers can communicate with 2002.05.00 albd_server processes to support access to license servers and other administrative functions.

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