vacuum_percentage

Pack file vacuuming threshold

A pack file is subject to vacuuming when the data in use is below this threshold. A lower value may waste disk space. A higher value may do more writes. For performance reasons, you should not specify a value above 50 percent.

Default Value

If the vacuum_percentage option is not defined, the default value of 20 is used.

Example

              vacuum_percentage=20
            

Database Configuration Options

This option key is associated with the RDM_DB handle (or RDM_CPP::Db for C++) and can be set using one of the following functions:

• SQLSetConnectAttr()
• rdm_dbSetOption()
• rdm_dbSetOptions()
• RDM_CPP::Db::SetOption()
• RDM_CPP::Db::SetOptions()

The option key can also be associated with the RDM_TFS handle (or RDM_CPP::TFS for C++) which will be inherited by the next RDM_DB handle (or RDM_CPP::Db for C++) allocated. Modifications to the RDM_TFS after the RDM_DB is allocated have no effect on the allocated RDM_DB. The following functions can be used to set the key/values to be inherited later:

• rdm_tfsSetOptions()
• rdm_tfsSetOption()
• RDM_CPP::TFS::SetOption()
• RDM_CPP::TFS::SetOptions()

See also

vacuuming