Documentation for JIRA 4.2. Documentation for other versions of JIRA is available too. 
Limitations on project totals imposed by databases:
データベース |
制限事項 |
|---|---|
Oracle |
1000 |
SQL Server |
No hard limit as a query can have any number of parameters, as long as it remains within the maximum batch size — which defaults to 65,536 * Network Packet Size (256MB). In practice, however, 2100 is the limit as this is the maximum number of parameters allowed by SQL Server. |
MySQL |
No hard limit; maximum query size has to be less than max_allowed_packet, which defaults to 1GB, but can be any value in the range 1024-1073741824 Bytes. |
PostgreSQL |
No hard limits; SQL query size is limited to the OS maximum file size. |
HSQLDB |
No limits specified, but in practice limited by heap memory. |
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